Multiplex network infomax:Multiplex network embedding via information fusion

For networking of big data applications,an essential issue is how to represent networks in vector space for further mining and analysis tasks,e.g.,node classification,clustering,link prediction,and visualization.Most existing studies on this subject mainly concentrate on monoplex networks considering a single type of relation among nodes.However,numerous real-world networks are naturally composed of multiple layers with different relation types;such a network is called a multiplex network.The majority of existing multiplex network embedding methods either overlook node attributes,resort to node labels for training,or underutilize underlying information shared across multiple layers.In this paper,we propose Multiplex Network Infomax(MNI),an unsupervised embedding framework to represent information of multiple layers into a unified embedding space.To be more specific,we aim to maximize the mutual information between the unified embedding and node embeddings of each layer.On the basis of this framework,we present an unsupervised network embedding method for attributed multiplex networks.Experimental results show that our method achieves competitive performance on not only node-related tasks,such as node classification,clustering,and similarity search,but also a typical edge-related task,i.e.,link prediction,at times even outperforming relevant supervised methods,despite that MNI is fully unsupervised.

Research on Embedding Capacity and Efficiency of Information Hiding Based on Digital Images

Generally speaking, being an efficient information hiding scheme, what we want to achieve is high embedding capacity of the cover image and high visual quality of the stego image, high visual quality is also called embedding efficiency. This paper mainly studies on the information hiding technology based on gray-scale digital images and especially considers the improvement of embedding capacity and embedding efficiency. For the purpose of that, two algorithms for information hiding were proposed, one is called high capacity of information hiding algorithm (HCIH for short), which achieves high embedding rate, and the other is called high quality of information hiding algorithm (HQIH for short), which realizes high embedding efficiency. The simulation experiments show that our proposed algorithms achieve better performance.

Tufting Carpet Machine Information Model Based on Object Linking and Embedding for Process Control Unified Architecture

In view of the lack of research on the information model of tufting carpet machine in China,an information modeling method based on Object Linking and Embedding for Process Control Unified Architecture(OPC UA)framework was proposed to solve the problem of“information island”caused by the differentiated data interface between heterogeneous equipment and system in tufting carpet machine workshop.This paper established an information model of tufting carpet machine based on analyzing the system architecture,workshop equipment composition and information flow of the workshop,combined with the OPC UA information modeling specification.Subsequently,the OPC UA protocol is used to instantiate and map the information model,and the OPC UA server is developed.Finally,the practicability of tufting carpet machine information model under the OPC UA framework and the feasibility of realizing the information interconnection of heterogeneous devices in the tufting carpet machine digital workshop are verified.On this basis,the cloud and remote access to the underlying device data are realized.The application of this information model and information integration scheme in actual production explores and practices the application of OPC UA technology in the digital workshop of tufting carpet machine.

Heterogeneous Network Embedding: A Survey

Real-world complex networks are inherently heterogeneous;they have different types of nodes,attributes,and relationships.In recent years,various methods have been proposed to automatically learn how to encode the structural and semantic information contained in heterogeneous information networks(HINs)into low-dimensional embeddings;this task is called heterogeneous network embedding(HNE).Efficient HNE techniques can benefit various HIN-based machine learning tasks such as node classification,recommender systems,and information retrieval.Here,we provide a comprehensive survey of key advancements in the area of HNE.First,we define an encoder-decoder-based HNE model taxonomy.Then,we systematically overview,compare,and summarize various state-of-the-art HNE models and analyze the advantages and disadvantages of various model categories to identify more potentially competitive HNE frameworks.We also summarize the application fields,benchmark datasets,open source tools,andperformance evaluation in theHNEarea.Finally,wediscuss open issues and suggest promising future directions.We anticipate that this survey will provide deep insights into research in the field of HNE.

Aspect-Based Sentiment Classification Using Deep Learning and Hybrid of Word Embedding and Contextual Position

Aspect-based sentiment analysis aims to detect and classify the sentiment polarities as negative,positive,or neutral while associating them with their identified aspects from the corresponding context.In this regard,prior methodologies widely utilize either word embedding or tree-based rep-resentations.Meanwhile,the separate use of those deep features such as word embedding and tree-based dependencies has become a significant cause of information loss.Generally,word embedding preserves the syntactic and semantic relations between a couple of terms lying in a sentence.Besides,the tree-based structure conserves the grammatical and logical dependencies of context.In addition,the sentence-oriented word position describes a critical factor that influences the contextual information of a targeted sentence.Therefore,knowledge of the position-oriented information of words in a sentence has been considered significant.In this study,we propose to use word embedding,tree-based representation,and contextual position information in combination to evaluate whether their combination will improve the result’s effectiveness or not.In the meantime,their joint utilization enhances the accurate identification and extraction of targeted aspect terms,which also influences their classification process.In this research paper,we propose a method named Attention Based Multi-Channel Convolutional Neural Net-work(Att-MC-CNN)that jointly utilizes these three deep features such as word embedding with tree-based structure and contextual position informa-tion.These three parameters deliver to Multi-Channel Convolutional Neural Network(MC-CNN)that identifies and extracts the potential terms and classifies their polarities.In addition,these terms have been further filtered with the attention mechanism,which determines the most significant words.The empirical analysis proves the proposed approach’s effectiveness compared to existing techniques when evaluated on standard datasets.The experimental results represent our approach outperforms in the F1 measure with an overall achievement of 94%in identifying aspects and 92%in the task of sentiment classification.

改进Informer模型的苜蓿土壤湿度预测方法

精准的苜蓿土壤湿度预测对于提高水资源利用率和降低智慧农业投入成本至关重要。针对传统土壤湿度预测方法在实际应用中存在预测周期短、精度低以及时空预测不足等问题,提出了一种融合快速傅里叶变换的Informer时空预测方法(Fast Fourier Transform and Spatio Temporal-Informer,FFT-ST-Informer)。首先,在传统Informer模型基础上添加了独立的时空嵌入层,从而捕获各个变量之间复杂的时空相关性。然后,根据土壤墒情与环境因素的相关性分析结果,选择降雨、灌溉量为关键环境因素,并使用快速傅里叶变换,通过提取某一周期具有先验的数据序列的频谱来表示其频域特征放入模型。此外,该模型中的ProbSparse自注意机制可以集中提取时空数据的重要上下文信息。FFT-ST-Informer模型使用来自宁夏引黄灌区自采的气象和土壤数据作为输入数据。实验结果表明,FFT-ST-Informer模型性能明显优于传统模型,比LSTM模型在平均绝对误差(MAE)、均方根误差(RMSE)、相关系数(R^(2))等评价指标上,分别提高了56.9%,64.4%,0.12%。

An Information Hiding Algorithm Based on Bitmap Resource of Portable Executable File

An information hiding algorithm is proposed, which hides information by embedding secret data into the palette of bitmap resources of portable executable （PE） files. This algorithm has higher security than some traditional ones because of integrating secret data and bitmap resources together. Through analyzing the principle of bitmap resources parsing in an operating system and the layer of resource data in PE files, a safe and useful solution is presented to solve two problems that bitmap resources are incorrectly analyzed and other resources data are confused in the process of data embedding. The feasibility and effectiveness of the proposed algorithm are confirmed through computer experiments.

Technique of Embedding Depth Maps into 2D Images

This paper proposes a new technique that is used to embed depth maps into corresponding 2-dimensional （2D） images. Since a 2D image and its depth map are integrated into one type of image format, they can be treated as if they were one 2D image. Thereby, it can reduce the amount of data in 3D images by half and simplify the processes for sending them through networks because the synchronization between images for the left and right eyes becomes unnecessary. We embed depth maps in the quantized discrete cosine transform （DCT） data of 2D images. The key to this technique is whether the depth maps could be embedded into 2D images without perceivably deteriorating their quality. We try to reduce their deterioration by compressing the depth map data by using the differences from the next pixel to the left. We assume that there is only one non-zero pixel at most on one horizontal line in the DCT block because the depth map values change abruptly. We conduct an experiment to evaluate the quality of the 2D images embedded with depth maps and find that satisfactory quality could be achieved.

Geospatial Area Embedding Based on the Movement Purpose Hypothesis Using Large-Scale Mobility Data from Smart Card

With the deployment of modern infrastructure for public transportation, several studies have analyzed movement patterns of people using smart card data and have characterized different areas. In this paper, we propose the “movement purpose hypothesis” that each movement occurs from two causes: where the person is and what the person wants to do at a given moment. We formulate this hypothesis to a synthesis model in which two network graphs generate a movement network graph. Then we develop two novel-embedding models to assess the hypothesis, and demonstrate that the models obtain a vector representation of a geospatial area using movement patterns of people from large-scale smart card data. We conducted an experiment using smart card data for a large network of railroads in the Kansai region of Japan. We obtained a vector representation of each railroad station and each purpose using the developed embedding models. Results show that network embedding methods are suitable for a large-scale movement of data, and the developed models perform better than existing embedding methods in the task of multi-label classification for train stations on the purpose of use data set. Our proposed models can contribute to the prediction of people flows by discovering underlying representations of geospatial areas from mobility data.

基于局部-邻域图信息与注意力机制的会话推荐

针对基于匿名用户的会话推荐忽略了不同会话之间可能存在的协作信息,以及未考虑所预测的目标项与历史行为的相关性问题,提出一种基于局部-邻域图信息与注意力机制的会话推荐模型(SR-LNG-AM)。从当前会话和邻域会话构建的图结构中分别学习两种类型的项目转换信息,将其融合得到项目嵌入。使用软注意力机制生成全局嵌入,使用目标注意力机制针对不同的目标项自适应生成不同的目标嵌入。结合局部嵌入,进行预测。在两个真实数据集上与多个基线方法进行实验对比,实验指标均有提高,验证了该方法的有效性。

清华大学信息素质教育的历史回顾与未来展望

本文对清华大学信息素质教育的发展历程进行回顾、总结与展望。文章梳理了清华大学图书馆从文献检索课程的开设到采用MOOC和嵌入式教学进行信息素质教育的探索过程,分析了本馆信息素养类课程教学方法和教学内容的创新,总结了教育成果及面临的挑战与机遇。最后,探讨了人工智能、大数据、元宇宙等技术如何融入信息素质教育,以及它们对教育模式的潜在影响。

应用型本科高校信息素养教学改革的探索与实践——以林学专业为例

根据应用型本科高校培养创新型应用人才的教学目标,采用PBL、翻转课堂、案例教学等多种教学模式,将信息素养教育与林学学科相融合,借助问卷星及学习通平台收集调查问卷,获得教学评价。结果显示:信息素养的嵌入式教学实践对学生学习专业知识有明显促进效果,并得到大部分学生认可,为实现信息素养教学与其他学科专业教育一体化提供实践经验。

基于多嵌入融合的top-N推荐

异构信息网络(Heterogeneous Information Network, HIN)凭借其丰富的语义信息和结构信息被广泛应用于推荐系统中,虽然取得了很好的推荐效果,但较少考虑局部特征放大、信息交互和多嵌入聚合等问题。针对这些问题,提出了一种新的用于top-N推荐的多嵌入融合推荐(Multi-embedding Fusion Recommendation, MFRec)模型。首先,该模型在用户和项目学习分支中都采用对象上下文表示网络,充分利用上下文信息以放大局部特征,增强相邻节点的交互性;其次,将空洞卷积和空间金字塔池化引入元路径学习分支,以便获取多尺度信息并增强元路径的节点表示;然后,采用多嵌入融合模块以便更好地进行用户、项目以及元路径的嵌入融合,细粒度地进行多嵌入之间的交互学习,并强调了各特征的不同重要性程度;最后,在两个公共推荐系统数据集上进行了实验,结果表明所提模型MFRec优于现有的其他top-N推荐系统模型。

国外高校图书馆嵌入式信息素养教育研究热点及趋势分析

文章梳理国外高校图书馆对信息素养教育的研究热点与发展趋势方向,以期为国内同行了解嵌入式信息素养教育提供参考。基于Web of Science数据库近10年发表的相关学术文献,对国外高校图书馆嵌入式信息素养教育的研究文献发表年、文献来源等方面进行分析,特别精选60篇文献详细阅读进行内容分析,总结信息素养嵌入不同学科领域的应用和策略,包括信息素养相关的基本概念、嵌入式课程的大纲设计、教学方法、教学成果评估等方面。

嵌入式操作系统加载模式选择方法研究

针对现有嵌入式操作系统加载模式选择方法会增加额外硬件开销和牺牲加载速度的问题,提出了一种基于链路状态信息的嵌入式操作系统加载模式选择方法。该方法利用上电后先复位PHY等外设再复位CPU,CPU运行BootLoader读取并判断PHY的链路建立指示信号确定加载模式,若链路建立指示信号指示网络已连接好,则选择以太网远程加载模式,其他情况下都选择本地存储器加载模式。工程应用实测结果表明,该方法稳定可靠。

融合项目特征级信息的稀疏兴趣网络序列推荐

在以往提取多兴趣嵌入的序列推荐模型中仅能通过聚类的方法发现少量兴趣概念,忽视项目交互序列中特征级信息对最终推荐结果的影响。针对此问题,对传统的多兴趣序列推荐模型进行改进,提出一种融合项目特征级信息的稀疏兴趣网络序列推荐模型。实验结果表明,相比其它模型,该模型可以更好捕捉用户的多样化偏好并缓解冷启动问题。在给定数据集上,该模型比传统的序列推荐模型在命中率上平均提高了6.4%,归一化折损累计增益平均提高了8.7%。

基于OBE理念的“嵌入式系统与应用”课程改革与实践

“嵌入式系统与应用”作为信息工程专业的专业必修课程,是高素质复合型新工科人才培养的重要课程。文章以“嵌入式系统与应用”课程存在的问题为出发点,以OBE理念为指导思想,考虑学生的学习特点,从明确教学目标、优化教学体系、调整教学内容、开展线上线下混合教学、实践教学和量化教学评价等方面探讨了该课程的改革举措,有效地激发了学生的学习兴趣,为培养高素质、复合型新工科人才奠定良好的基础。

融合信息瓶颈与图卷积的跨域推荐算法

基于迁移学习的跨域推荐可以有效地学习连接源域和目标域的映射函数,但其性能仍然受到表征质量不高和负迁移问题的影响,不能有效地为冷启动用户进行推荐,为此提出了一种融合信息瓶颈与图卷积网络的跨域推荐模型(IBGC)。利用图卷积神经网络聚合有关联的用户-用户和项目-项目信息;利用注意力机制学习用户和项目偏好,以提高节点特征表示质量;考虑到两个领域的信息交互,将重叠用户进行嵌入表示的同时限制特定信息的编码,利用信息瓶颈理论设计了三种正则化器,以捕获域内和跨域用户-项目的相关性,并将不同领域的重叠用户表征对齐以解决负迁移问题。在Amazon数据集中的四对公开数据集上进行实验,实验结果表明该模型在MRR、HR@K和NDCG@K三个推荐性能指标上的表现均优于基线模型,在四对数据集上与最优对比基线模型相比,MRR平均提升34.36%,HR@10平均提升34.94%,NDCG@10平均提升36.83%,证明了IBGC模型的有效性。

基于OBE理念的高等医学院校图书馆嵌入创新创业教育研究

成果导向教育(OBE)是一种以学生为中心、学习成果为导向的先进教育理念,将其应用于信息素养教育和创新创业教育可以更好地提高医学生的综合素质。文章从医学生信息素养对其创新创业的影响、图书馆嵌入创新创业教育的意义、基于OBE理念图书馆嵌入创新创业教育的模式构建等方面进行探究,提出信息素养教育与创新创业教育、医学专业教育的融合,可使医学生的创新创业更有针对性、实效性。

基于分层融合策略和上下文信息嵌入的多模态情绪识别

现有的多模态融合策略大多将不同模态特征进行简单拼接,忽略了针对单个模态固有特点的个性化融合需求。同时,在情绪识别阶段,独立地看待单个话语的情绪而不考虑其在前后话语语境下的情绪状态,可能导致情绪识别错误。为了解决上述问题,提出一种基于分层融合策略和上下文信息嵌入的多模态情绪识别方法,通过分层融合策略,采用层次递进的方式,依次融合不同的模态特征,以便减少单个模态的噪声干扰并解决不同模态间表达不一致的问题。该方法还充分利用融合后模态的上下文信息,综合考虑单个话语在上下文语境中的情绪表示,以便提升情绪识别的效果。在二分类情绪识别任务中,该方法的准确率比SOTA模型提升1.54%。在多分类情绪识别任务中,该方法的F1值比SOTA模型提升2.79%。