Research on Data Fusion of Adaptive Weighted Multi-Source Sensor

Data fusion can effectively process multi-sensor information to obtain more accurate and reliable results than a single sensor.The data of water quality in the environment comes from different sensors,thus the data must be fused.In our research,self-adaptive weighted data fusion method is used to respectively integrate the data from the PH value,temperature,oxygen dissolved and NH3 concentration of water quality environment.Based on the fusion,the Grubbs method is used to detect the abnormal data so as to provide data support for estimation,prediction and early warning of the water quality.

Image Processing on Geological Data in Vector Format and Multi-Source Spatial Data Fusion

The geological data are constructed in vector format in geographical information system (GIS) while other data such as remote sensing images, geographical data and geochemical data are saved in raster ones. This paper converts the vector data into 8 bit images according to their importance to mineralization each by programming. We can communicate the geological meaning with the raster images by this method. The paper also fuses geographical data and geochemical data with the programmed strata data. The result shows that image fusion can express different intensities effectively and visualize the structure characters in 2 dimensions. Furthermore, it also can produce optimized information from multi-source data and express them more directly.

Multi-Source Data Privacy Protection Method Based on Homomorphic Encryption and Blockchain

Multi-Source data plays an important role in the evolution of media convergence.Its fusion processing enables the further mining of data and utilization of data value and broadens the path for the sharing and dissemination of media data.However,it also faces serious problems in terms of protecting user and data privacy.Many privacy protectionmethods have been proposed to solve the problemof privacy leakage during the process of data sharing,but they suffer fromtwo flaws:1)the lack of algorithmic frameworks for specific scenarios such as dynamic datasets in the media domain;2)the inability to solve the problem of the high computational complexity of ciphertext in multi-source data privacy protection,resulting in long encryption and decryption times.In this paper,we propose a multi-source data privacy protection method based on homomorphic encryption and blockchain technology,which solves the privacy protection problem ofmulti-source heterogeneous data in the dissemination ofmedia and reduces ciphertext processing time.We deployed the proposedmethod on theHyperledger platformfor testing and compared it with the privacy protection schemes based on k-anonymity and differential privacy.The experimental results showthat the key generation,encryption,and decryption times of the proposedmethod are lower than those in data privacy protection methods based on k-anonymity technology and differential privacy technology.This significantly reduces the processing time ofmulti-source data,which gives it potential for use in many applications.

Recent trends of machine learning applied to multi-source data of medicinal plants

In traditional medicine and ethnomedicine,medicinal plants have long been recognized as the basis for materials in therapeutic applications worldwide.In particular,the remarkable curative effect of traditional Chinese medicine during corona virus disease 2019(COVID-19)pandemic has attracted extensive attention globally.Medicinal plants have,therefore,become increasingly popular among the public.However,with increasing demand for and profit with medicinal plants,commercial fraudulent events such as adulteration or counterfeits sometimes occur,which poses a serious threat to the clinical outcomes and interests of consumers.With rapid advances in artificial intelligence,machine learning can be used to mine information on various medicinal plants to establish an ideal resource database.We herein present a review that mainly introduces common machine learning algorithms and discusses their application in multi-source data analysis of medicinal plants.The combination of machine learning algorithms and multi-source data analysis facilitates a comprehensive analysis and aids in the effective evaluation of the quality of medicinal plants.The findings of this review provide new possibilities for promoting the development and utilization of medicinal plants.

Application of Attributes Fusion Technology in Prediction of Deep Reservoirs in Paleogene of Bohai Sea

1 Introduction The Paleogene strata(with a depth of more than 2500m)in the Bohai sea is complex(Xu Changgui,2006),the reservoir buried deeply,the reservoir prediction is difficult(LAI Weicheng,XU Changgui,2012),and more

Threat Modeling and Application Research Based on Multi-Source Attack and Defense Knowledge

Cyber Threat Intelligence(CTI)is a valuable resource for cybersecurity defense,but it also poses challenges due to its multi-source and heterogeneous nature.Security personnel may be unable to use CTI effectively to understand the condition and trend of a cyberattack and respond promptly.To address these challenges,we propose a novel approach that consists of three steps.First,we construct the attack and defense analysis of the cybersecurity ontology(ADACO)model by integrating multiple cybersecurity databases.Second,we develop the threat evolution prediction algorithm(TEPA),which can automatically detect threats at device nodes,correlate and map multisource threat information,and dynamically infer the threat evolution process.TEPA leverages knowledge graphs to represent comprehensive threat scenarios and achieves better performance in simulated experiments by combining structural and textual features of entities.Third,we design the intelligent defense decision algorithm(IDDA),which can provide intelligent recommendations for security personnel regarding the most suitable defense techniques.IDDA outperforms the baseline methods in the comparative experiment.

Carbon Emission Evaluation in Jinan Western New District based on Multi-source Data Fusion

Carbon emissions caused by human activities are closely related to the process of urbanization,and urban land utilization,function vitality and traffic systems are three important factors that may influence the emission levels.For clarifying the space structure of a low-carbon eco-city,and combining the concept of"Combining Assessment with Construction"to track and contrast the construction of the low-carbon eco-city,this research selects quantifiable low-carbon eco-city spatial characteristics as indicators,and evaluates and analyzes the potential carbon emissions.Taking the Jinan Western New District as an example,diversity of construction land,travel carbon emission potential,and density and accessibility of adjacent road networks in the overall urban planning were measured.After the completion of the new urban area,the evaluation mainly reflected certain factors,such as the mixed degree of urban functions,the density of urban functions,the walking distance to bus stops and the density and number of bus stops.Dividing the levels and adding equal weights after index normalization,the carbon emission potential is evaluated at the two levels of the overall and fragmented areas.The results show that:(1)The low-carbon emission potential areas in the planning scheme basically reached the planned goals.(2)There is inconsistency between districts and indicators in the planning scheme.The diversity of construction land and the accessibility of the adjacent road network are relatively small;however,there is a large difference between the travel carbon emission potential and the road network accessibility.(3)Carbon emission potential after completion did not reach the planned expectation,and the low-carbon emission potential plots were concentrated in the Changqing Old City Area and Central Area of Dangjia Town Area.(4)The carbon emission indicators varied greatly in different areas,and there were serious imbalances in the density of public transportation lines and the mixed degree of urban functions.

A heuristic cabin-type component alignment method based on multi-source data fusion

In cabin-type component alignment, digital measurement technology is usually adopted to provide guidance for assembly. Depending on the system of measurement, the alignment process can be divided into measurement-assisted assembly(MAA) and force-driven assembly. In MAA,relative pose between components is directly measured to guide assembly, while in force-driven assembly, only contact state can be recognized according to measured six-dimensional force and torque(6 D F/T) and the process is completed based on preset assembly strategy. Aiming to improve the efficiency of force-driven cabin-type component alignment, this paper proposed a heuristic alignment method based on multi-source data fusion. In this method, measured 6 D F/T, pose data and geometric information of components are fused to calculate the relative pose between components and guide the movement of pose adjustment platform. Among these data types, pose data and measured 6 D F/T are combined as data set. To collect the data sets needed for data fusion, dynamic gravity compensation method and hybrid motion control method are designed. Then the relative pose calculation method is elaborated, which transforms collected data sets into discrete geometric elements and calculates the relative poses based on the geometric information of components.Finally, experiments are conducted in simulation environment and the results show that the proposed alignment method is feasible and effective.

基于大数据技术的企业信息资源管理系统

企业信息资源管理系统面对大规模和多类型数据涌入时,处理效率低,系统容易崩溃,设计基于大数据技术的企业信息资源管理系统。分析Hadoop平台体系结构,确定资源管理系统整体架构,设计每个子系统对应的功能,部署系统硬件环境;利用大数据融合技术设置软件执行算法,通过模糊调度挖掘资源间关联规则,根据相似性函数,建立同类资源的融合模型,提高业务处理效率,完成系统整体设计。实验表明,该系统的CPU利用率仅在30%左右,处理时间在1.00s以内,大大缩短了处理时间,提高了处理效率。

数据融合策略在食用油真实性鉴别中的研究与应用进展

对基于光谱、质谱、色谱等检测技术的数据融合策略及其在食用油真实性鉴别中的研究及应用现状进行综述,指出:目前,广泛应用于食用油真实性鉴别的检测技术包括光谱、色谱、质谱、电子传感器等。然而,单一检测技术往往只关注某一特定的数据或指标,当食用油所含成分较复杂时,无法充分消除叠加效应、基线漂移、噪声等问题。数据融合策略分为数据层融合、特征层融合和决策层融合三类,结合化学计量学方法可以综合不同检测技术获取的数据,提取更丰富的数据特征信息,从而提高食用油真实性的鉴别效果。不同的新型检测技术之间,或将其与传统光谱、质谱、色谱等检测技术之间进行数据融合,可以快速、准确地实现食用油掺伪鉴别、品种分类和产地溯源,未来可就改进现有分析方法、结合深度学习算法开发新型融合算法、引入云计算提高食用油鉴别实时性等方面进行深入研究,以推动数据融合策略在食用油真实性鉴别领域的发展与创新。

基于专利异构数据融合的技术演化路径识别方法

[研究目的]针对目前技术演化分析中多关注专利文本,忽略专利引文信息的问题,提出一种基于专利异构数据融合的技术演化路径识别方法。[研究方法]首先,使用Sentence-BERT模型提取专利文本语义特征;其次,使用图卷积神经网络模型将文本语义特征与引文结构特征融合,实现异构数据融合构建专利向量;最后,划分时间窗,使用k-means算法对各时间窗进行技术主题聚类,基于相邻时间窗技术主题相似度构建技术演化路径。[研究结论]以人工智能领域为例进行实证研究,共发现4条技术演化路径。与相关权威报告进行比对,结果表明识别结果与人工智能技术领域的发展现状一致,验证了模型的有效性和科学性。

重磁测量在海岛礁及其邻域中的应用与展望

重磁测量在海岛礁及其邻域的应用与研究中不可或缺。由于海岛礁及邻域重磁场空间分布的梯度和幅度变化较大,又受地理环境与技术的限制,获取该区域高分辨率、高精度的重磁测量信息较为困难,导致测量成果质量不高且产品单一,亟需科技创新来扭转此局面。本文系统分析了海岛礁及其邻域地理环境、重磁特征和相关测量技术方法的发展现状,针对存在的问题,深入探讨了该领域的新技术、新方法及应用研究,并对未来发展方向作出展望:(1)加强重磁测量技术方法的研究,构建高水平的立体观测系统;(2)深化多源数据融合处理技术方法研究,丰富测量成果的输出方式;(3)充分利用海岛礁作为定点的中长期观测平台的天然优势,开展地球物理场的融合研究,拓展其应用与研究领域。

我国工业机器人领域技术热点及发展趋势分析——基于CiteSpace文献专利融合分析

工业机器人是国家现代化工业技术实力的重要体现,也是国际科技竞争的关键战略领域。获取相关的技术发展动态数据并进行深入分析对于及时识别该领域存在的挑战和机会,具有重要意义。以工业机器人领域的最新期刊文献以及专利数据为样本进行数据融合分析,综合运用文献计量方法以及可视化工具,构建我国工业机器人领域创新知识图谱从科学和技术多维度展开分析。研究表明,我国工业机器人领域研究和发展总体呈现快速增长趋势,但同时也存在研究合作规模较小、知识和技术转化率低等问题,未来通过加强跨地区交流、促进产学研合作、改善技术结构等策略不断推动该领域新的发展。

多源异构数据融合关键技术与政务大数据治理体系

随着信息技术的飞速发展,各级政府和大型企业掌握的数据量正在以指数级别增长。然而,数据来源多样会导致格式差异,数据质量参差不齐会影响应用效果,数据分散管理会弱化关联汇集,数据形态异构会造成语义鸿沟。在此背景下,多源异构数据融合负责将来源不同的多模态数据进行有效整合,完成数据互补与关联,进而实现信息增强。目前,大多数已有研究的关注重点集中在大数据治理流程与多模态深度学习,很少有工作研究讨论完整的多源异构数据融合技术框架。因此,在综述关键技术的基础上,文中提出了一整套涵盖“数据引接-数据清洗-数据集成-数据融合”全过程的多源异构数据融合关键技术框架,并对各个环节需要解决的问题与重点任务进行介绍。然后,通过一个政务应用实例场景,给出了政务大数据治理体系的设计,以解决政务数据来源广泛、质量参差不齐、管理分散、形态异构的问题,并进一步阐述了多源异构数据融合的重要价值。最后总结全文并展望未来。

基于物联网技术的农业机械智能监测与故障诊断

智能监测与故障诊断系统可以实时监控农业机械的运行状态,及时发现潜在问题并进行预警,减少机械故障导致的停机时间,进而提高农业生产的整体效率。该文基于物联网技术,对智能监测系统数据采集模块、通信模块以及数据处理与分析模块进行设计,并结合多传感器融合技术和先进的算法,实现了对机械状态的全面监测和故障诊断。该系统能够显著提高农业机械的工作效率和可靠性,降低故障率和维护成本,并提出了进一步优化和改进系统性能的建议。研究结果旨在为推动农业机械智能化发展提供理论基础和技术支持。

混合动力汽车转向稳定性多传感器融合控制技术

为了满足汽车行驶稳定性要求,当前依托于单一传感信息进行转向控制,容易忽略很多影响因素,使得控制后汽车转向质心侧偏角依旧较大。因此,混合动力汽车提出转向稳定性多传感器融合控制技术。考虑混合动力汽车转向过程中的动态特性,构建转向动力学模型,并计算出车辆理想横摆角速度。深入分析横摆角速度、滑移率对车辆转向稳定性的影响,得出期望的横摆力矩和滑移率调整力矩。将汽车转向稳定性控制问题看作二次规划问题,结合BP神经网络和常规PID控制器,设计转向稳定性控制算法,利用车辆转向参数的理想值、实际值和偏差值推算出稳定性控制参数。结合融合多传感器实时采集信息,推算出汽车转向姿态误差代入控制结构中,给出优化后的控制参数。实验结果表明:新提出的控制技术应用后,车辆转向的质心侧偏角不超过±0.012 rad/s,满足了混合动力汽车转向行驶要求。

人工智能技术支持下的数字媒体网络数据融合系统设计研究

在数字化时代的浪潮下,数字媒体网络数据已成为信息技术领域的重要组成部分,这些数据涵盖从文本、图像到视频等多种形式,随着人工智能(Artificial Intelligence,AI)技术的迅速发展,如何有效地融合和处理这些庞大的数据集成为了一个关键问题,包括对数据类型的理解和分析,涉及如何在AI的支持下构建有效的数据处理系统。本文首先介绍了关键的AI技术,探讨了它们在处理大规模数字媒体网络数据中的应用和效果。接着,详细描述了数字媒体网络数据的特点,并阐述了基于AI技术的数字媒体网络数据融合系统的设计理念和架构。在此基础上,重点讨论了使用AI进行数据分析和模式识别的方法,以及在系统设计中关键技术和算法的选择与实现。最后,展示了对该系统的测试结果,验证了系统的有效性和可行性。

融合“科学—技术—舆情”数据特征的技术筛选方法研究

[目的/意义]利用科技文献进行技术监测预警是科技情报工作的重要内容。目前,采用自然语言处理技术从科技文献中抽取的技术元素存在数量多、不易展示的问题,因此设计了一种融合“科学—技术—舆情”数据特征的技术筛选方法来实现科技文献技术挖掘结果的筛选。[方法/过程]以技术术语表示技术,基于词法结构分析和修饰符匹配方法构建技术术语层次结构体系,利用表征技术基础研究热度的论文数据、表征技术研发热度的专利数据、表征技术市场关注度的舆情数据,构建重要性、成长性、新颖性和持久性4类特征,采用机器学习方法训练和确定技术筛选模型。[结果/结论]通过与人工筛选结果对比发现,本方法能够更有效地筛选技术。在各种模型中,同时采用3类数据和4类特征构建的技术筛选模型效果最优,该方法可以为开展技术识别预测工作,研发技术挖掘工具提供依据。[局限]该方法仅在技术术语层次结构的第一层进行了效果验证,其领域适用性与数据类型方面还有待进一步研究。

基于电子鼻与GC-MS融合技术的优质红茶和缺陷红茶香气品质评价

依据专家感官审评结果将14个红茶样本按香气品质的优劣划分为优质红茶与缺陷红茶2组,基于快速气相电子鼻(fast gas chromatography-electronic-nose,GC-E-Nose)和气相色谱-质谱(gas chromatography-mass spectrometry,GC-MS)融合技术结合多元统计分析对2组茶样进行判别分析,筛选影响两类茶样分类的关键差异组分。结果显示:GC-E-Nose(44维)和GC-MS(73维)相融合可以得到117维融合数据集,用其建立的正交偏最小二乘判别分析模型可以实现两类红茶的准确分类,其模型解释能力和预测能力(R_(Y)^(2)=0.976,Q^(2)=0.959)较单一的GC-E-Nose或GC-MS数据模型更优。基于变量投影重要性>1.6和P<0.05双变量原则,共筛选出二甲基硫醚(B3、B25)、β-紫罗酮(A59)、(3E)-4,8-二甲基壬-1,3,7-三烯(A20)、二氢猕猴桃内酯(A64)、芳樟醇(A17)、苯乙醇(A19)、δ-辛内酯(A41)和γ-壬内酯(A45)8个关键香气组分对分类起重要作用。研究结果表明,GC-E-Nose与GC-MS融合技术可以实现缺陷红茶和优质红茶的快速、准确分类,该方法可作为传统感官审评方法的补充,为红茶品质控制和质量提升提供技术支撑。

光谱技术结合化学计量学方法在食用植物油质量安全快速检测中的研究进展

为满足消费者对食用植物油高品质需求,做好食用植物油产业的质量安全风险管控,开发高效、准确、低成本的快速检测方法是主要研究方向。光谱技术与化学计量学结合让快速光谱技术在食用植物油质量安全快速检测中的应用前景更广阔。简单介绍了光谱技术(单光谱、融合光谱技术)的特点和光谱数据处理方法(预处理方法、特征波长提取、建模方法、数据融合方法),并综述了光谱技术结合化学计量学在常规品质、重金属与有机污染物、真菌毒素、食品添加剂与农药残留、掺杂掺假、溯源及分类等食用植物油质量安全快速检测中的应用进展,并对相关领域研究进行了总结和展望(引用文献61篇)。