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Sentiment analysis using deep learning approaches:an overview

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Science China(Information Sciences) 2020年第1期63卷 21-56页

作者： Olivier HABIMANA Yuhua li ruixuan li Xiwu GU Ge YU School of Computer Science and Technology Huazhong University of Science and Technology School of Computer Science and Engineering Northeastern University

Nowadays, with the increasing number of Web 2.0 tools, users generate huge amounts of data in an enormous and dynamic way. In this regard, the sentiment analysis appeared to be an important tool that allows the automation of getting insight from the user-generated data. Recently, deep learning approaches have been proposed for different sentiment analysis tasks and have achieved state-of-the-art results. Therefore, in order to help researchers to depict quickly the current progress as well as current issues to be addressed, in this paper, we review deep learning approaches that have been applied to various sentiment analysis tasks and their trends of development. This study also provides the performance analysis of different deep learning models on a particular dataset at the end of each sentiment analysis task. Toward the end, the review highlights current issues and hypothesized solutions to be taken into account in future work. Moreover, based on knowledge learned from previous studies, the future work subsection shows the suggestions that can be incorporated into new deep learning models to yield better performance. Suggestions include the use of bidirectional encoder representations from transformers(BERT), sentiment-specific word embedding models, cognition-based attention models, common sense knowledge, reinforcement learning, and generative adversarial networks.

关键词： sentiment analysis opinion mining deep learning neural network natural language processing(NLP) social network

Type-2 fuzzy description logic

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Frontiers of Computer Science 2011年第2期5卷 205-215页

作者： ruixuan li Kunmei WEN Xiwu GU Yuhua li Xiaolin SUN Bing li Intelligent and Distributed Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Software Engineering Wuhan University Wuhan 430072 China

Description logics （DLs） are widely employed in recent semantic web application systems. However, classical description logics are limited when dealing with imprecise concepts and roles, thus providing the motivation for this work. In this paper, we present a type-2 fuzzy attributive concept language with complements （ALC） and provide its knowledge representation and reasoning algorithms. We also propose type-2 fuzzy web ontology language （OWL） to build a fuzzy ontology based on type- 2 fuzzy ALC and analyze the soundness, completeness, and complexity of the reasoning algorithms. Compared to type-1 fuzzy ALC, type-2 fuzzy ALC can describe imprecise knowledge more meticulously by using the membership degree interval. We implement a semantic search engine based on type-2 fuzzy ALC and carry out experiments on real data to test its performance. The results show that the type-2 fuzzy ALC can improve the precision and increase the number of relevant hits for imprecise information searches.

关键词： description logic (DL) type-2 fuzzy attributive concept language with complements (ALC) fuzzy ontology reasoning semantic search engine

A Novel Hybrid Method to Analyze Security Vulnerabilities in Android Applications

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Tsinghua Science and Technology 2020年第5期25卷 589-603页

作者： Junwei Tang ruixuan li Kaipeng Wang Xiwu Gu Zhiyong Xu School of Computer Science and Technology Huazhong University of Science and TechnologyWuhan 430074China Math and Computer Science Department Suffolk UniversityBostonMA 02101USA and also with Shenzhen Institute of Advanced TechnologyChinese Academy of ScienceShenzhen 518055China

We propose a novel hybrid method to analyze the security vulnerabilities in Android *** method combines static analysis,which consists of metadata and data flow analyses with dynamic analysis,which includes dynamic executable scripts and application program interface *** hybrid method can effectively analyze nine major categories of important security vulnerabilities in Android *** design dynamic executable scripts that record and perform manual operations to customize the execution path of the target *** dynamic executable scripts can replace most manual operations,simplify the analysis process,and further verify the corresponding security *** successfully statically analyze 5547 malwares in Drebin and 10 151real-world *** average analysis time of each application in Drebin is 4.52 s,whereas it reaches 92.02 s for real-word *** system can detect all the labeled vulnerabilities among 56 labeled *** dynamic verification shows that our static analysis accuracy approximates 95%for real-world *** show that our dynamic analysis can effectively detect the vulnerability named input unverified,which is difficult to be detected by other *** addition,our dynamic analysis can be extended to detect more types of vulnerabilities.

关键词： Android security vulnerability analysis static analysis dynamic analysis

Dynamically Authorized Role-Based Access Control for Grid Applications

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Geo-Spatial Information Science 2006年第3期9卷 223-228,233页

作者： YAO Hanbing HU Heping LU Zhengding li ruixuan College of Computer Science and Technology Huazhong University of Science and Technology Guanshan Wuhan 430074 China

Grid computing is concerned with the sharing and coordinated use of diverse resources in distributed “virtual organizations”. The heterogeneous, dynamic and multi-domain nature of these environments makes challenging security issues that demand new technical approaches. Despite the recent advances in access control approaches applicable to Grid computing, there remain issues that impede the development of effective access control models for Grid applications. Among them there are the lack of context-based models for access control, and reliance on identity or capability-based access control schemes. An access control scheme that resolve these issues is presented, and a dynamically authorized role-based access control (D-RBAC) model extending the RBAC with context constraints is proposed. The D-RABC mechanisms dynamically grant permissions to users based on a set of contextual information collected from the system and user’s environments, while retaining the advantages of RBAC model. The implementation architecture of D-RBAC for the Grid application is also described.

关键词： Grid security RBAC context-based access control

Secure Sensitive Data Sharing on a Big Data Platform

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Tsinghua Science and Technology 2015年第1期20卷 72-80页

作者： Xinhua Dong ruixuan li Heng He Wanwan Zhou Zhengyuan Xue Hao Wu the School of Computer Science and Technology Huazhong University of Science and Technology

Users store vast amounts of sensitive data on a big data platform. Sharing sensitive data will help enterprises reduce the cost of providing users with personalized services and provide value-added data ***, secure data sharing is problematic. This paper proposes a framework for secure sensitive data sharing on a big data platform, including secure data delivery, storage, usage, and destruction on a semi-trusted big data sharing platform. We present a proxy re-encryption algorithm based on heterogeneous ciphertext transformation and a user process protection method based on a virtual machine monitor, which provides support for the realization of system functions. The framework protects the security of users＇ sensitive data effectively and shares these data safely. At the same time, data owners retain complete control of their own data in a sound environment for modern Internet information security.

关键词： secure sharing sensitive data big data proxy re-encryption private space

A Routing Algorithm for Risk-Scanning Agents Using Ant Colony Algorithm in P2P Network

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Wuhan University Journal of Natural Sciences 2006年第5期11卷 1097-1103页

作者： TANG Zhuo LU Zhengding li ruixuan College of Computer Science and Technology HuazhongUniversity of Science and Technology Wuhan 430074H ubei China

This paper describes a routing algorithm for risk scanning agents using ant colony algorithm in P2P（peerto peer） network. Every peer in the P2P network is capable of updating its routing table in a real-time way, which enables agents to dynamically and automatically select, according to current traffic condition of the network, the global optimal traversal path. An adjusting mechanism is given to adjust the routing table when peers join or leave. By means of exchanging pheromone intensity of part of paths, the algorithm provides agents with more choices as to which one to move and avoids prematurely reaching local optimal path. And parameters of the algorithm are determined by lots of simulation testing. And we also compare with other routing algorithms in unstructured P2P network in the end.

关键词： risk ant colony algorithm P2P

TSPN: Term-Based Semantic Peer-to-Peer Networks

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Wuhan University Journal of Natural Sciences 2012年第1期17卷 31-35页

作者： GAO Guoqiang li ruixuan LU Zhengding School of Computer Science and Technology HuazhongUniversity of Science and Technology Wuhan 430074 HubeiChina School of Media and Communication Wuhan TextileUniversity Wuhan 430073 Hubei China

In this paper, we propose Term-based Semantic Peerto-Peer Networks （TSPN） to achieve semantic search. For each peer, TSPN builds a full text index of its documents. Through the analysis of resources, TSPN obtains series of terms, and distributes these terms into the network. Thus, TSPN can use query terms to locate appropriate peers to perform semantic search. Moreover, unlike the traditional structured P2P networks, TSPN uses the terms, not the peers, as the logical nodes of DHT. This can withstand the impact of network chum. The experimental results show that TSPN has better performance compared with the existing P2P semantic searching algorithms.

关键词： Term-based Semantic Peer-to-Peer Networks (TSPN) peer-to-peer semantic parsing semantic DHT

Relationship between the unique microstructures and behaviors of high-entropy alloys

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International Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1350-1363页

作者： Yaqi Wu Peter Kliaw ruixuan li Weiran Zhang Guihong Geng Xuehui Yan Guiqun liu Yong Zhang State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN 37996USA Xi’an Rare Metal Materials Institute Co.Ltd. Xi’an 710016China School of Materials Science and Engineering North Minzu UniversityYinchuan 750030China GRIMAT Engineering Institute Co. Ltd.Beijing 101407China

High-entropy alloys(HEAs),which were introduced as a pioneering concept in 2004,have captured the keen interest of nu-merous ***,in this context,can be perceived as representing disorder and *** contrast,elemental composi-tions within alloy systems occupy specific structural sites in space,a concept referred to as *** accordance with Shannon entropy,structure is analogous to ***,the arrangement of atoms within a material,termed its structure,plays a pivotal role in dictating its *** addition to expanding the array of options for alloy composites,HEAs afford ample opportunities for diverse structural *** profound influence of distinct structural features on the exceptional behaviors of alloys is underscored by numer-ous *** features include remarkably high fracture strength with excellent ductility,antiballistic capability,exceptional radi-ation resistance,and corrosion *** this paper,we delve into various unique material structures and properties while elucidating the intricate relationship between structure and performance.

关键词： high-entropy alloys unique microstructure special properties alloy design

Resolution for Conflicts of Inter-Operation in Multi-Domain Environment

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Wuhan University Journal of Natural Sciences 2007年第5期12卷 955-960页

作者： LU Zhengding WEN Zhumu TANG Zhuo li ruixuan College of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 Hubei China

This paper proposes a method to formalize the interoperation in multi-domain environment. Through employing the algebra method, we conclude four types of the conflicts for the interoperation, and analyzes the cause of the policy conflicts. For each type of conflicts, we formalize it and proposes the method of detection and resolution. Finally, the method is illuminated be effective through comparing our work with others.

关键词： conflicts inter-operation multi-domain