期刊文献+
共找到433篇文章
< 1 2 22 >
每页显示 20 50 100
Requirements ranking based on crowd-sourcing high-end product USs
1
作者 MA Yufeng DOU Yajie +2 位作者 XU Xiangqian JIA Qingyang TAN Yuejin 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2024年第1期94-104,共11页
Based on the characteristics of high-end products,crowd-sourcing user stories can be seen as an effective means of gathering requirements,involving a large user base and generating a substantial amount of unstructured... Based on the characteristics of high-end products,crowd-sourcing user stories can be seen as an effective means of gathering requirements,involving a large user base and generating a substantial amount of unstructured feedback.The key challenge lies in transforming abstract user needs into specific ones,requiring integration and analysis.Therefore,we propose a topic mining-based approach to categorize,summarize,and rank product requirements from user stories.Specifically,after determining the number of story categories based on py LDAvis,we initially classify“I want to”phrases within user stories.Subsequently,classic topic models are applied to each category to generate their names,defining each post-classification user story category as a requirement.Furthermore,a weighted ranking function is devised to calculate the importance of each requirement.Finally,we validate the effectiveness and feasibility of the proposed method using 2966 crowd-sourced user stories related to smart home systems. 展开更多
关键词 high-end product complex system crowd-sourcing user stories topic mining requirements ranking
下载PDF
Research evolution of metal organic frameworks: A scientometric approach with human-in-the-loop
2
作者 Xintong Zhao Kyle Langlois +5 位作者 Jacob Furst Yuan An Xiaohua Hu Diego Gomez Gualdron Fernando Uribe-Romo Jane Greenberg 《Journal of Data and Information Science》 CSCD 2024年第3期44-64,共21页
Purpose:This paper reports on a scientometric analysis bolstered by human-in-the-loop,domain experts,to examine the field of metal-organic frameworks(MOFs)research.Scientometric analyses reveal the intellectual landsc... Purpose:This paper reports on a scientometric analysis bolstered by human-in-the-loop,domain experts,to examine the field of metal-organic frameworks(MOFs)research.Scientometric analyses reveal the intellectual landscape of a field.The study engaged MOF scientists in the design and review of our research workflow.MOF materials are an essential component in next-generation renewable energy storage and biomedical technologies.The research approach demonstrates how engaging experts,via human-in-the-loop processes,can help develop a comprehensive view of a field’s research trends,influential works,and specialized topics.Design/methodology/approach:Ascientometric analysis was conducted,integrating natural language processing(NLP),topic modeling,and network analysis methods.The analytical approach was enhanced through a human-in-the-loop iterative process involving MOF research scientists at selected intervals.MOF researcher feedback was incorporated into our method.The data sample included 65,209 MOF research articles.Python3 and software tool VOSviewer were used to perform the analysis.Findings:The findings demonstrate the value of including domain experts in research workflows,refinement,and interpretation of results.At each stage of the analysis,the MOF researchers contributed to interpreting the results and method refinements targeting our focus Research evolution of metal organic frameworks:A scientometric approach with human-in-the-loop on MOF research.This study identified influential works and their themes.Our findings also underscore four main MOF research directions and applications.Research limitations:This study is limited by the sample(articles identified and referenced by the Cambridge Structural Database)that informed our analysis.Practical implications:Our findings contribute to addressing the current gap in fully mapping out the comprehensive landscape of MOF research.Additionally,the results will help domain scientists target future research directions.Originality/value:To the best of our knowledge,the number of publications collected for analysis exceeds those of previous studies.This enabled us to explore a more extensive body of MOF research compared to previous studies.Another contribution of our work is the iterative engagement of domain scientists,who brought in-depth,expert interpretation to the data analysis,helping hone the study. 展开更多
关键词 Scientometric Metal-Organic Frameworks(MOFs) Network analysis Topic modeling Human-in-the-loop
下载PDF
A Video Captioning Method by Semantic Topic-Guided Generation
3
作者 Ou Ye Xinli Wei +2 位作者 Zhenhua Yu Yan Fu Ying Yang 《Computers, Materials & Continua》 SCIE EI 2024年第1期1071-1093,共23页
In the video captioning methods based on an encoder-decoder,limited visual features are extracted by an encoder,and a natural sentence of the video content is generated using a decoder.However,this kind ofmethod is de... In the video captioning methods based on an encoder-decoder,limited visual features are extracted by an encoder,and a natural sentence of the video content is generated using a decoder.However,this kind ofmethod is dependent on a single video input source and few visual labels,and there is a problem with semantic alignment between video contents and generated natural sentences,which are not suitable for accurately comprehending and describing the video contents.To address this issue,this paper proposes a video captioning method by semantic topic-guided generation.First,a 3D convolutional neural network is utilized to extract the spatiotemporal features of videos during the encoding.Then,the semantic topics of video data are extracted using the visual labels retrieved from similar video data.In the decoding,a decoder is constructed by combining a novel Enhance-TopK sampling algorithm with a Generative Pre-trained Transformer-2 deep neural network,which decreases the influence of“deviation”in the semantic mapping process between videos and texts by jointly decoding a baseline and semantic topics of video contents.During this process,the designed Enhance-TopK sampling algorithm can alleviate a long-tail problem by dynamically adjusting the probability distribution of the predicted words.Finally,the experiments are conducted on two publicly used Microsoft Research Video Description andMicrosoft Research-Video to Text datasets.The experimental results demonstrate that the proposed method outperforms several state-of-art approaches.Specifically,the performance indicators Bilingual Evaluation Understudy,Metric for Evaluation of Translation with Explicit Ordering,Recall Oriented Understudy for Gisting Evaluation-longest common subsequence,and Consensus-based Image Description Evaluation of the proposed method are improved by 1.2%,0.1%,0.3%,and 2.4% on the Microsoft Research Video Description dataset,and 0.1%,1.0%,0.1%,and 2.8% on the Microsoft Research-Video to Text dataset,respectively,compared with the existing video captioning methods.As a result,the proposed method can generate video captioning that is more closely aligned with human natural language expression habits. 展开更多
关键词 Video captioning encoder-decoder semantic topic jointly decoding Enhance-TopK sampling
下载PDF
Review of Research on English Translation of Chinese Running Sentences
4
作者 ZHANG Wen-hui 《Journal of Literature and Art Studies》 2024年第7期624-627,共4页
In order to convey complete meanings,there is a phenomenon in Chinese of using multiple running sentences.Xu Jingning(2023,p.66)states,“In communication,a complete expression of meaning often requires more than one c... In order to convey complete meanings,there is a phenomenon in Chinese of using multiple running sentences.Xu Jingning(2023,p.66)states,“In communication,a complete expression of meaning often requires more than one clause,which is common in human languages.”Domestic research on running sentences includes discussions on defining the concept and structural features of running sentences,sentence properties,sentence pattern classifications and their criteria,as well as issues related to translating running sentences into English.This article primarily focuses on scholarly research into the English translation of running sentences in China,highlighting recent achievements and identifying existing issues in the study of running sentence translation.However,by reviewing literature on the translation of running sentences,it is found that current research in the academic community on non-core running sentences is limited.Therefore,this paper proposes relevant strategies to address this issue. 展开更多
关键词 Chinese running sentences TOPICS English-Chinese translation
下载PDF
Evaluation of the Effect of Assessment Method Reform in “Nursing Research” Course
5
作者 Yunling Li Dandan Hu 《Journal of Contemporary Educational Research》 2024年第3期7-12,共6页
Objective:This paper aims to evaluate the implementation effect of the diversified course assessment method reform.Methods:A diversified assessment method was implemented for 196 undergraduate nursing students.Student... Objective:This paper aims to evaluate the implementation effect of the diversified course assessment method reform.Methods:A diversified assessment method was implemented for 196 undergraduate nursing students.Students’mastery of key knowledge in“Nursing Research”was assessed through group reports on topic selection and literature retrieval,as well as the proposition level of the final examination.Results:81.6%of the students agreed with the course assessment method,and 97.9%believed studying“Nursing Research”would be helpful for future scientific research applications.Conclusion:Diversified assessment methods can help improve undergraduate nursing students’scientific research skills and comprehensive quality. 展开更多
关键词 Nursing Research Proposition assessment Undergraduate nursing students Topic selection Literature retrieval
下载PDF
Current scenario of traditional medicines in management of diabetic foot ulcers:A review 被引量:5
6
作者 Abhijit S Rayate Basavraj S Nagoba +3 位作者 Sachin S Mumbre Hardi B Mavani Ajay M Gavkare Advait S Deshpande 《World Journal of Diabetes》 SCIE 2023年第1期1-16,共16页
Diabetic foot infections and diabetic foot ulcers(DFU)cause significant suffering and are often recurring.DFU have three important pathogenic factors,namely,microangiopathy causing local tissue anoxia,neuropathy makin... Diabetic foot infections and diabetic foot ulcers(DFU)cause significant suffering and are often recurring.DFU have three important pathogenic factors,namely,microangiopathy causing local tissue anoxia,neuropathy making the foot prone to injuries from trivial trauma,and local tissue hyperglycaemia favouring infection and delaying the wound healing.DFU have been the leading cause for non-traumatic amputations of part or whole of the limb.Western medicines focus mainly on euglycaemia,antimicrobials,debridement and wound cover with grafts,and off-loading techniques.Advances in euglycaemic control,foot care and footwear,systemic antimicrobial therapy,and overall health care access and delivery,have resulted in an overall decrease in amputations.However,the process of wound care after adequate debridement remains a major cost burden globally,especially in developing nations.This process revolves around two basic concerns regarding control/eradication of local infection and promotion of faster healing in a chronic DFU without recurrence.Wound modulation with various dressings and techniques are often a costly affair.Some aspects of the topical therapy with modern/Western medicines are frequently not addressed.Cost of and compliance to these therapies are important as both the wounds and their treatment are“chronic.”Naturally occurring agents/medications from traditional medicine systems have been used frequently in different cultures and nations,though without adequate clinical base/relevance.Traditional Chinese medicine involves restoring yin-yang balance,regulating the‘chi’,and promoting local blood circulation.Traditional medicines from India have been emphasizing on‘naturally’available products to control wound infection and promote all the aspects of wound healing.There is one more group of chemicals which are not pharmaceutical agents but can create acidic milieu in the wound to satisfy the above-mentioned basic concerns.Various natural and plant derived products(e.g.,honey,aloe vera,oils,and calendula)and maggots are also used for wound healing purposes.We believe that patients with a chronic wound are so tired physically,emotionally,and financially that they usually accept native traditional medicine which has the same cultural base,belief,and faith.Many of these products have never been tested in accordance to“evidence-based medicine.”There are usually case reports and experience-based reports about these products.Recently,there have been some trials(in vitro and in vivo)to verify the claims of usage of traditional medicines in management of DFU.Such studies show that these natural products enhance the healing process by controlling infection,stimulating granulation tissue,antimicrobial action,promoting fibroblastic activity and collagen deposition,etc.In this review,we attempt to study and analyse the available literature on results of topical traditional medicines,which are usually advocated in the management of DFU.An integrated and‘holistic’approach of both modern and traditional medicine may be more acceptable to the patient,cost effective,and easy to administer and monitor.This may also nevertheless lead to further improvement in quality of life and decrease in the rates of amputations for DFU. 展开更多
关键词 Diabetic foot infections Diabetic foot ulcers MANAGEMENT Traditional medicines Topical agents Wound healing
下载PDF
Novel Machine Learning–Based Approach for Arabic Text Classification Using Stylistic and Semantic Features 被引量:1
7
作者 Fethi Fkih Mohammed Alsuhaibani +1 位作者 Delel Rhouma Ali Mustafa Qamar 《Computers, Materials & Continua》 SCIE EI 2023年第6期5871-5886,共16页
Text classification is an essential task for many applications related to the Natural Language Processing domain.It can be applied in many fields,such as Information Retrieval,Knowledge Extraction,and Knowledge modeli... Text classification is an essential task for many applications related to the Natural Language Processing domain.It can be applied in many fields,such as Information Retrieval,Knowledge Extraction,and Knowledge modeling.Even though the importance of this task,Arabic Text Classification tools still suffer from many problems and remain incapable of responding to the increasing volume of Arabic content that circulates on the web or resides in large databases.This paper introduces a novel machine learning-based approach that exclusively uses hybrid(stylistic and semantic)features.First,we clean the Arabic documents and translate them to English using translation tools.Consequently,the semantic features are automatically extracted from the translated documents using an existing database of English topics.Besides,the model automatically extracts from the textual content a set of stylistic features such as word and character frequencies and punctuation.Therefore,we obtain 3 types of features:semantic,stylistic and hybrid.Using each time,a different type of feature,we performed an in-depth comparison study of nine well-known Machine Learning models to evaluate our approach and used a standard Arabic corpus.The obtained results show that Neural Network outperforms other models and provides good performances using hybrid features(F1-score=0.88%). 展开更多
关键词 Arabic text classification machine learning stylistic features semantic features TOPICS
下载PDF
TG-SMR:AText Summarization Algorithm Based on Topic and Graph Models 被引量:1
8
作者 Mohamed Ali Rakrouki Nawaf Alharbe +1 位作者 Mashael Khayyat Abeer Aljohani 《Computer Systems Science & Engineering》 SCIE EI 2023年第4期395-408,共14页
Recently,automation is considered vital in most fields since computing methods have a significant role in facilitating work such as automatic text summarization.However,most of the computing methods that are used in r... Recently,automation is considered vital in most fields since computing methods have a significant role in facilitating work such as automatic text summarization.However,most of the computing methods that are used in real systems are based on graph models,which are characterized by their simplicity and stability.Thus,this paper proposes an improved extractive text summarization algorithm based on both topic and graph models.The methodology of this work consists of two stages.First,the well-known TextRank algorithm is analyzed and its shortcomings are investigated.Then,an improved method is proposed with a new computational model of sentence weights.The experimental results were carried out on standard DUC2004 and DUC2006 datasets and compared to four text summarization methods.Finally,through experiments on the DUC2004 and DUC2006 datasets,our proposed improved graph model algorithm TG-SMR(Topic Graph-Summarizer)is compared to other text summarization systems.The experimental results prove that the proposed TG-SMR algorithm achieves higher ROUGE scores.It is foreseen that the TG-SMR algorithm will open a new horizon that concerns the performance of ROUGE evaluation indicators. 展开更多
关键词 Natural language processing text summarization graph model topic model
下载PDF
Water-responsive gel extends drug retention and facilitates skin penetration for curcumin topical delivery against psoriasis
9
作者 Qing Yao Yuanyuan Zhai +11 位作者 Zhimin He Qian Wang Lining Sun Tuyue Sun Leyao Lv Yingtao Li Jiyong Yang Donghui Lv Ruijie Chen Hailin Zhang Xiang Luo Longfa Kou 《Asian Journal of Pharmaceutical Sciences》 SCIE CAS 2023年第2期61-75,共15页
Psoriasis is a chronic inflammatory skin disease characterized by erythema,scaling,and skin thickening.Topical drug application is recommended as the first-line treatment.Many formulation strategies have been develope... Psoriasis is a chronic inflammatory skin disease characterized by erythema,scaling,and skin thickening.Topical drug application is recommended as the first-line treatment.Many formulation strategies have been developed and explored for enhanced topical psoriasis treatment.However,these preparations usually have low viscosity and limited retention on the skin surface,resulting in low drug delivery efficiency and poor patient satisfaction.In this study,we developed the first water-responsive gel(WRG),which has a distinct water-triggered liquid-to-gel phase transition property.Specifically,WRG was kept in a solution state in the absence of water,and the addition of water induced an immediate phase transition and resulted in a high viscosity gel.Curcumin was used as a model drug to investigate the potential of WRG in topical drug delivery against psoriasis.In vitro and in vivo data showed that WRG formulation could not only extend skin retention but also facilitate the drug permeating across the skin.In a mouse model of psoriasis,curcumin loaded WRG(CUR-WRG)effectively ameliorated the symptoms of psoriasis and exerted a potent anti-psoriasis effect by extending drug retention and facilitating drug penetration.Further mechanism study demonstrated that the anti-hyperplasia,anti-inflammation,anti-angiogenesis,anti-oxidation,and immunomodulation properties of curcumin were amplified by enhanced topical drug delivery efficiency.Notably,neglectable local or systemic toxicity was observed for CUR-WRG application.This study suggests that WRG is a promising formulation for topically psoriasis treatment. 展开更多
关键词 PSORIASIS Sol-gel transition Water-responsive CURCUMIN Topical drug delivery
下载PDF
Topic Controlled Steganography via Graph-to-Text Generation
10
作者 Bowen Sun Yamin Li +3 位作者 Jun Zhang Honghong Xu Xiaoqiang Ma Ping Xia 《Computer Modeling in Engineering & Sciences》 SCIE EI 2023年第7期157-176,共20页
Generation-based linguistic steganography is a popular research area of information hiding.The text generative steganographic method based on conditional probability coding is the direction that researchers have recen... Generation-based linguistic steganography is a popular research area of information hiding.The text generative steganographic method based on conditional probability coding is the direction that researchers have recently paid attention to.However,in the course of our experiment,we found that the secret information hiding in the text tends to destroy the statistical distribution characteristics of the original text,which indicates that this method has the problem of the obvious reduction of text quality when the embedding rate increases,and that the topic of generated texts is uncontrollable,so there is still room for improvement in concealment.In this paper,we propose a topic-controlled steganography method which is guided by graph-to-text generation.The proposed model can automatically generate steganographic texts carrying secret messages from knowledge graphs,and the topic of the generated texts is controllable.We also provide a graph path coding method with corresponding detailed algorithms for graph-to-text generation.Different from traditional linguistic steganography methods,we encode the secret information during graph path coding rather than using conditional probability.We test our method in different aspects and compare it with other text generative steganographic methods.The experimental results show that the model proposed in this paper can effectively improve the quality of the generated text and significantly improve the concealment of steganographic text. 展开更多
关键词 Information hiding linguistic steganography knowledge graph topic controlled text generation
下载PDF
Research on high-performance English translation based on topic model
11
作者 Yumin Shen Hongyu Guo 《Digital Communications and Networks》 SCIE CSCD 2023年第2期505-511,共7页
Retelling extraction is an important branch of Natural Language Processing(NLP),and high-quality retelling resources are very helpful to improve the performance of machine translation.However,traditional methods based... Retelling extraction is an important branch of Natural Language Processing(NLP),and high-quality retelling resources are very helpful to improve the performance of machine translation.However,traditional methods based on the bilingual parallel corpus often ignore the document background in the process of retelling acquisition and application.In order to solve this problem,we introduce topic model information into the translation mode and propose a topic-based statistical machine translation method to improve the translation performance.In this method,Probabilistic Latent Semantic Analysis(PLSA)is used to obtains the co-occurrence relationship between words and documents by the hybrid matrix decomposition.Then we design a decoder to simplify the decoding process.Experiments show that the proposed method can effectively improve the accuracy of translation. 展开更多
关键词 Machine translation Topic model Statistical machine translation Bilingual word vector RETELLING
下载PDF
Smart object recommendation based on topic learning and joint features in the social internet of things
12
作者 Hongfei Zhang Li Zhu +4 位作者 Tao Dai Liwen Zhang Xi Feng Li Zhang Kaiqi Zhang 《Digital Communications and Networks》 SCIE CSCD 2023年第1期22-32,共11页
With the extensive integration of the Internet,social networks and the internet of things,the social internet of things has increasingly become a significant research issue.In the social internet of things application... With the extensive integration of the Internet,social networks and the internet of things,the social internet of things has increasingly become a significant research issue.In the social internet of things application scenario,one of the greatest challenges is how to accurately recommend or match smart objects for users with massive resources.Although a variety of recommendation algorithms have been employed in this field,they ignore the massive text resources in the social internet of things,which can effectively improve the effect of recommendation.In this paper,a smart object recommendation approach named object recommendation based on topic learning and joint features is proposed.The proposed approach extracts and calculates topics and service relevant features of texts related to smart objects and introduces the“thing-thing”relationship information in the internet of things to improve the effect of recommendation.Experiments show that the proposed approach enables higher accuracy compared to the existing recommendation methods. 展开更多
关键词 Social internet of things Smart object recommendation Topics Features Thing-thing relationship
下载PDF
ESG Discourse Analysis Through BERTopic: Comparing News Articles and Academic Papers
13
作者 Haein Lee Seon Hong Lee +1 位作者 Kyeo Re Lee Jang Hyun Kim 《Computers, Materials & Continua》 SCIE EI 2023年第6期6023-6037,共15页
Environmental,social,and governance(ESG)factors are critical in achieving sustainability in business management and are used as values aiming to enhance corporate value.Recently,non-financial indicators have been cons... Environmental,social,and governance(ESG)factors are critical in achieving sustainability in business management and are used as values aiming to enhance corporate value.Recently,non-financial indicators have been considered as important for the actual valuation of corporations,thus analyzing natural language data related to ESG is essential.Several previous studies limited their focus to specific countries or have not used big data.Past methodologies are insufficient for obtaining potential insights into the best practices to leverage ESG.To address this problem,in this study,the authors used data from two platforms:LexisNexis,a platform that provides media monitoring,and Web of Science,a platform that provides scientific papers.These big data were analyzed by topic modeling.Topic modeling can derive hidden semantic structures within the text.Through this process,it is possible to collect information on public and academic sentiment.The authors explored data from a text-mining perspective using bidirectional encoder representations from transformers topic(BERTopic)—a state-of-the-art topic-modeling technique.In addition,changes in subject patterns over time were considered using dynamic topic modeling.As a result,concepts proposed in an international organization such as the United Nations(UN)have been discussed in academia,and the media have formed a variety of agendas. 展开更多
关键词 ESG BERTopic natural language processing topic modeling
下载PDF
Automated File Labeling for Heterogeneous Files Organization Using Machine Learning
14
作者 Sagheer Abbas Syed Ali Raza +4 位作者 MAKhan Muhammad Adnan Khan Atta-ur-Rahman Kiran Sultan Amir Mosavi 《Computers, Materials & Continua》 SCIE EI 2023年第2期3263-3278,共16页
File labeling techniques have a long history in analyzing the anthological trends in computational linguistics.The situation becomes worse in the case of files downloaded into systems from the Internet.Currently,most ... File labeling techniques have a long history in analyzing the anthological trends in computational linguistics.The situation becomes worse in the case of files downloaded into systems from the Internet.Currently,most users either have to change file names manually or leave a meaningless name of the files,which increases the time to search required files and results in redundancy and duplications of user files.Currently,no significant work is done on automated file labeling during the organization of heterogeneous user files.A few attempts have been made in topic modeling.However,one major drawback of current topic modeling approaches is better results.They rely on specific language types and domain similarity of the data.In this research,machine learning approaches have been employed to analyze and extract the information from heterogeneous corpus.A different file labeling technique has also been used to get the meaningful and`cohesive topic of the files.The results show that the proposed methodology can generate relevant and context-sensitive names for heterogeneous data files and provide additional insight into automated file labeling in operating systems. 展开更多
关键词 Automated file labeling file organization machine learning topic modeling
下载PDF
Topic Modelling and Sentimental Analysis of Students’Reviews
15
作者 Omer S.Alkhnbashi Rasheed Mohammad Nassr 《Computers, Materials & Continua》 SCIE EI 2023年第3期6835-6848,共14页
Globally,educational institutions have reported a dramatic shift to online learning in an effort to contain the COVID-19 pandemic.The fundamental concern has been the continuance of education.As a result,several novel... Globally,educational institutions have reported a dramatic shift to online learning in an effort to contain the COVID-19 pandemic.The fundamental concern has been the continuance of education.As a result,several novel solutions have been developed to address technical and pedagogical issues.However,these were not the only difficulties that students faced.The implemented solutions involved the operation of the educational process with less regard for students’changing circumstances,which obliged them to study from home.Students should be asked to provide a full list of their concerns.As a result,student reflections,including those from Saudi Arabia,have been analysed to identify obstacles encountered during the COVID-19 pandemic.However,most of the analyses relied on closed-ended questions,which limited student involvement.To delve into students’responses,this study used open-ended questions,a qualitative method(content analysis),a quantitative method(topic modelling),and a sentimental analysis.This study also looked at students’emotional states during and after the COVID-19 pandemic.In terms of determining trends in students’input,the results showed that quantitative and qualitative methods produced similar outcomes.Students had unfavourable sentiments about studying during COVID-19 and positive sentiments about the face-to-face study.Furthermore,topic modelling has revealed that the majority of difficulties are more related to the environment(home)and social life.Students were less accepting of online learning.As a result,it is possible to conclude that face-to-face study still attracts students and provides benefits that online study cannot,such as social interaction and effective eye-to-eye communication. 展开更多
关键词 Topic modelling sentimental analysis COVID-19 students’input
下载PDF
LDA-ID:An LDA-Based Framework for Real-Time Network Intrusion Detection
16
作者 Weidong Zhou Shengwei Lei +1 位作者 Chunhe Xia Tianbo Wang 《China Communications》 SCIE CSCD 2023年第12期166-181,共16页
Network intrusion poses a severe threat to the Internet.However,existing intrusion detection models cannot effectively distinguish different intrusions with high-degree feature overlap.In addition,efficient real-time ... Network intrusion poses a severe threat to the Internet.However,existing intrusion detection models cannot effectively distinguish different intrusions with high-degree feature overlap.In addition,efficient real-time detection is an urgent problem.To address the two above problems,we propose a Latent Dirichlet Allocation topic model-based framework for real-time network Intrusion Detection(LDA-ID),consisting of static and online LDA-ID.The problem of feature overlap is transformed into static LDA-ID topic number optimization and topic selection.Thus,the detection is based on the latent topic features.To achieve efficient real-time detection,we design an online computing mode for static LDA-ID,in which a parameter iteration method based on momentum is proposed to balance the contribution of prior knowledge and new information.Furthermore,we design two matching mechanisms to accommodate the static and online LDA-ID,respectively.Experimental results on the public NSL-KDD and UNSW-NB15 datasets show that our framework gets higher accuracy than the others. 展开更多
关键词 feature overlap LDA-ID optimal topic number determination real-time intrusion detection
下载PDF
Ensemble Deep Learning Framework for Situational Aspects-Based Annotation and Classification of International Student’s Tweets during COVID-19
17
作者 Shabir Hussain Muhammad Ayoub +4 位作者 Yang Yu Junaid Abdul Wahid Akmal Khan Dietmar P.F.Moller Hou Weiyan 《Computers, Materials & Continua》 SCIE EI 2023年第6期5355-5377,共23页
As the COVID-19 pandemic swept the globe,social media plat-forms became an essential source of information and communication for many.International students,particularly,turned to Twitter to express their struggles an... As the COVID-19 pandemic swept the globe,social media plat-forms became an essential source of information and communication for many.International students,particularly,turned to Twitter to express their struggles and hardships during this difficult time.To better understand the sentiments and experiences of these international students,we developed the Situational Aspect-Based Annotation and Classification(SABAC)text mining framework.This framework uses a three-layer approach,combining baseline Deep Learning(DL)models with Machine Learning(ML)models as meta-classifiers to accurately predict the sentiments and aspects expressed in tweets from our collected Student-COVID-19 dataset.Using the pro-posed aspect2class annotation algorithm,we labeled bulk unlabeled tweets according to their contained aspect terms.However,we also recognized the challenges of reducing data’s high dimensionality and sparsity to improve performance and annotation on unlabeled datasets.To address this issue,we proposed the Volatile Stopwords Filtering(VSF)technique to reduce sparsity and enhance classifier performance.The resulting Student-COVID Twitter dataset achieved a sophisticated accuracy of 93.21%when using the random forest as a meta-classifier.Through testing on three benchmark datasets,we found that the SABAC ensemble framework performed exceptionally well.Our findings showed that international students during the pandemic faced various issues,including stress,uncertainty,health concerns,financial stress,and difficulties with online classes and returning to school.By analyzing and summarizing these annotated tweets,decision-makers can better understand and address the real-time problems international students face during the ongoing pandemic. 展开更多
关键词 COVID-19 pandemic situational awareness ensemble learning aspect-based text classification deep learning models international students topic modeling
下载PDF
Topic-Aware Abstractive Summarization Based on Heterogeneous Graph Attention Networks for Chinese Complaint Reports
18
作者 Yan Li Xiaoguang Zhang +4 位作者 Tianyu Gong Qi Dong Hailong Zhu Tianqiang Zhang Yanji Jiang 《Computers, Materials & Continua》 SCIE EI 2023年第9期3691-3705,共15页
Automatic text summarization(ATS)plays a significant role in Natural Language Processing(NLP).Abstractive summarization produces summaries by identifying and compressing the most important information in a document.Ho... Automatic text summarization(ATS)plays a significant role in Natural Language Processing(NLP).Abstractive summarization produces summaries by identifying and compressing the most important information in a document.However,there are only relatively several comprehensively evaluated abstractive summarization models that work well for specific types of reports due to their unstructured and oral language text characteristics.In particular,Chinese complaint reports,generated by urban complainers and collected by government employees,describe existing resident problems in daily life.Meanwhile,the reflected problems are required to respond speedily.Therefore,automatic summarization tasks for these reports have been developed.However,similar to traditional summarization models,the generated summaries still exist problems of informativeness and conciseness.To address these issues and generate suitably informative and less redundant summaries,a topic-based abstractive summarization method is proposed to obtain global and local features.Additionally,a heterogeneous graph of the original document is constructed using word-level and topic-level features.Experiments and analyses on public review datasets(Yelp and Amazon)and our constructed dataset(Chinese complaint reports)show that the proposed framework effectively improves the performance of the abstractive summarization model for Chinese complaint reports. 展开更多
关键词 Text summarization TOPIC Chinese complaint report heterogeneous graph attention network
下载PDF
Usage of topical insulin for the treatment of diabetic keratopathy,including corneal epithelial defects
19
作者 Ching Yee Leong Ainal Adlin Naffi +1 位作者 Wan Haslina Wan Abdul Halim Mae-Lynn Catherine Bastion 《World Journal of Diabetes》 SCIE 2023年第6期930-938,共9页
BACKGROUND Diabetic keratopathy(DK)occurs in 46%-64%of patients with diabetes and requires serious attention.In patients with diabetes,the healing of corneal epithelial defects or ulcers takes longer than in patients ... BACKGROUND Diabetic keratopathy(DK)occurs in 46%-64%of patients with diabetes and requires serious attention.In patients with diabetes,the healing of corneal epithelial defects or ulcers takes longer than in patients without diabetes.Insulin is an effective factor in wound healing.The ability of systemic insulin to rapidly heal burn wounds has been reported for nearly a century,but only a few studies have been performed on the effects of topical insulin(TI)on the eye.Treatment with TI is effective in treating DK.AIM To review clinical and experimental animal studies providing evidence for the efficacy of TI to heal corneal wounds.METHODS National and international databases,including PubMed and Scopus,were searched using relevant keywords,and additional manual searches were conducted to assess the effectiveness of TI application on corneal wound healing.Journal articles published from January 1,2000 to December 1,2022 were examined.The relevancy of the identified citations was checked against predetermined eligibility standards,and relevant articles were extracted and reviewed.RESULTS A total of eight articles were found relevant to be discussed in this review,including four animal studies and four clinical studies.According to the studies conducted,TI is effective for corneal re-epithelialization in patients with diabetes based on corneal wound size and healing rate.CONCLUSION Available animal and clinical studies have shown that TI promotes corneal wound healing by several mechanisms.The use of TI was not associated with adverse effects in any of the published cases.Further studies are needed to enhance our knowledge and understanding of TI in the healing of DK. 展开更多
关键词 Diabetes mellitus Diabetic keratopathy Topical insulin HEALING
下载PDF
Recent progress of respiratory inhalation drug delivery systems
20
作者 HE Ming-xin ZHOU Xiang-dong +5 位作者 XU Li ZHANG Na ZHOU Ming LUO Ding ZHANG Hua LI Qi 《Journal of Hainan Medical University》 CAS 2023年第5期73-78,共6页
With the influence of many factors such as the aging of the population,the younger smokers,and the serious air pollution,the incidence of chronic respiratory diseases is increasing year by year.In the treatment of res... With the influence of many factors such as the aging of the population,the younger smokers,and the serious air pollution,the incidence of chronic respiratory diseases is increasing year by year.In the treatment of respiratory diseases,clinical intervention is still mainly based on drug control of pulmonary symptoms.However,systemic drugs have disadvantages such as many adverse reactions and severe systemic side effects.In recent years,the research and development of local drug delivery systems for the respiratory tract has brought new changes to the treatment of respiratory diseases.Locally delivered drugs can directly act on the airways and have the characteristics of fast onset,good curative effect and small side effects.It is a simple,efficient and safe treatment method,which has a very significant effect,and has become a hot topic of current research and promotion.This paper briefly reviews the development track and latest research progress of respiratory local drug delivery systems at home and abroad,in order to provide reference for clinical workers in drug selection and application. 展开更多
关键词 Respiratory diseases Inhalation preparation Drug delivery systems Topical medication REVIEW
下载PDF
上一页 1 2 22 下一页 到第
使用帮助 返回顶部