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IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： Tofigh Naghibi Sarah Hoffmann Beat Pfister Speech Processing Group Computer Engineering and Networks Lab. ETH Zurich Switzerland

ISBN: (纸本)9781479903573

Feature subset selection, as a special case of the general subset selection problem, attracted a lot of research attention due to the growing importance of data-mining applications. However, since finding the optimal subset is an NP-hard problem, very different heuristic search methods have been suggested to approximate it. Here we propose a new second-order cone programming based search strategy to efficiently solve the feature subset selection for large-scale problems. Experimentally, it is shown that its performance is almost always better than the greedy search methods especially when the features are strongly dependent.

关键词： second-order cone search method feature selection convex approximation

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A 100-Gb/s noncoherent silicon receiver for PDM-DBPSK/DQPSK signals

A 100-Gb/s noncoherent silicon receiver for PDM-DBPSK/DQPSK ...

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作者： Klamkin, Jonathan Gambini, Fabrizio Faralli, Stefano Malacarne, Antonio Meloni, Gianluca Berrettini, Gianluca Contestabile, Giampiero Potí, Luca Electrical and Computer Engineering Department Boston University Boston MA 02215 United States Scuola Superiore Sant'Anna 56124 Pisa Italy CNIT Photonic Networks National Lab 56124 Pisa Italy

An integrated noncoherent silicon receiver for demodulation of 100-Gb/s polarization-division multiplexed differential quadrature phase-shift keying and polarization-division multiplexed differential binary phase-shift keying signals is demonstrated. The receiver consists of a 2D surface grating coupler, four Mach-Zehnder delay interferometers and four germanium balanced photodetectors.©2014 Optical Society of America.

关键词： Silicon

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A Dynamic Selective Parameter Sharing Mechanism Embedded with Multi-Level Reasoning Abstractions 26

A Dynamic Selective Parameter Sharing Mechanism Embedded wit...

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26th European Conference on Artificial Intelligence, ECAI 2023

作者： Liu, Yan He, Ying Ming, Zhong Yu, F. Richard Shenzhen Key Lab of Digital & Intelligent Technologies & Systems College of Computer Science and Software Engineering Shenzhen University China State Key Laboratory of Integrated Services Networks Xidian University China Shenzhen China

ISBN: (纸本)9781643684369

Cooperative multi-agent reinforcement learning (Co-MARL) commonly employs different parameter sharing mechanisms, such as full and partial sharing. However, imprudent application of these mechanisms can potentially constrain policy diversity and limit cooperation flexibility. Recent methods that group agents into distinct sharing categories often exhibit poor performance due to challenges in precisely differentiating agents and neglecting the issue of promoting cooperation among these categories. To address these issues, we introduce a dynamic selective parameter sharing mechanism embedded with multi-level reasoning abstractions (DSPS-MA). Our approach uses self-comparison sequences to infer agents' abstract concepts, defining the differences between agents and allowing them to dynamically select partners to share parameters based on these abstract concepts. We also design an intrinsic reward to offer comprehensive collaboration guidance for agents, and introduce a policy cosine similarity regularization term to ensure sufficient policy diversity. Empirical evaluations demonstrate that our approach yields higher returns and faster convergence than state-of-the-art methods. © 2023 The Authors.

关键词： Dynamics

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A fast handoff method based on RSSI and LQI in wireless sensor network

A fast handoff method based on RSSI and LQI in wireless sens...

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2011 7th International Conference on Computational Intelligence and Security, CIS 2011

作者： Miao, Zhang Li, Jingying School of Mechanical Engineering Northwestern Polytechnical University Xi'an Shaanxi 710072 China Key Lab. of Computer Networks and Information Security of Ministry of Education Xidian Univ. Xi'an Shaanxi 710071 China

ISBN: (纸本)9780769545844

The thesis also puts forward a fast handoff method based on RSSI and LQI, which makes improvements on preset parameters, subnet selection, decision standards and reparation of switching failure. The new method which confirmed by the simulation not only overcomes the traditional problems in switching technology successfully, but also reduces the scanning and handoff delays, packet loss rate, improves the network throughput and prolongs its lifetime. © 2011 IEEE.

关键词： Wireless sensor networks

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Designing the distributed architecture DIPS for cooperative software engineering

Designing the distributed architecture DIPS for cooperative ...

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Annual Hawaii International Conference on System Sciences (HICSS)

作者： D. Scherer T. Murer A. Wurtz Computer Engineering and Networks Lab TIK Swiss Federal Institute of Technology Zurich Switzerland

Cooperative software engineering typically involves many actors and resources that cooperate in a complex distributed and heterogeneous world. In the DIPS (Distributed Integrated Process Services) project, a 3D model is used for the definition, enactment and tracing of software development processes, which expresses both the structure and evolution of such processes. This paper discusses how an optimal architecture was evaluated to implement the process model in a process support framework. Process-specific and general requirements are identified, and expected usage patterns of a DIPS-based environment are analyzed. A set of potential architecture variants is proposed, and implications of the requirements and usage patterns on the variants are discussed qualitatively. An evaluation of the architecture alternatives leads to the design of a hybrid DIPS architecture based on distributed heterogeneous objects. The prototype DIPS implementation is briefly outlined.

关键词： computer architecture Electronics packaging Software engineering Programming Design engineering Prototypes Software maintenance computer networks Distributed computing Electronic mail

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Camera calibration using lengths of corresponding line segments

Camera calibration using lengths of corresponding line segme...

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Pacific Rim Symposium on Image and Video Technology

作者： Wang, Ruiyan Jiang, Guang Quan, Long Wu, Chengke State Key Lab. of Integrated Service Networks School of Telecommunications Engineering Xidian University Xi'an China Department of Computer Science Hong Kong University of Science and Technology Hong Kong Hong Kong

ISBN: (纸本)9780769542850

Camera calibration using patterns is widely used in computer vision and industry. The accuracy of calibration depends on the accuracy of the pattern. A high accuracy pattern is usually difficult to manufacture in labs. In this paper, we propose to use two images of two identical industrial objects as natural calibration patterns. The corresponding line segments on the objects are used for a nonlinear calibration method, and only five intrinsic parameters of the camera are optimized in the procedure. The experiments show that the proposed method is both effective and practical. © 2010 IEEE.

关键词： Calibration

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An intelligent platform for effective management of time-consuming electromagnetic simulation problems

An intelligent platform for effective management of time-con...

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作者： Kapsalis, Andreas P. Gkonis, Panagiotis K. Zekios, Constantinos L. Kaklamani, Dimitra I. Venieris, Iakovos S. Kyriakou, George A. Intelligent Communications and Broadband Networks Laboratory School of Electrical and Computer Engineering National Technical University of Athens 9 Heroon Polytechneioy Str. Zografou Athens Greece Microwaves Lab. Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi Greece

ISBN: (纸本)9781934142301

Modern simulation applications that carry out large scale iterative processes, such as Monte-Carlo simulations, or manipulate large data structures, tend to be extremely time-consuming due to the shortage of computational resources or the inherent nature of the simulation itself. Typical simulations can take up to several days to complete on conventional systems, while high-end supercomputers can be cost-prohibitive. Therefore, the need for effective parallelization of software execution and resource management is more imperative. The goal of this paper is to present a fully-distributed platform that enables software simulations to be executed within user-acceptable time periods, by predicting the resource requirements of each simulation. In this context, the platform analyzes files that contain historical data about past executions of the particular simulation. Processor and memory utilization, overall execution time, level of parallelization and distributed execution are some of the information collected and used by an efficient training algorithm, in order to determine the optimal amount of resources to be allocated in a particular simulation. The training algorithm applies several machine-learning techniques such as multi-linear regression in order to efficiently predict the resource vector that will satisfy the user requirements.

关键词： Supercomputers

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MSIsensor-RNA:Microsatellite Instability Detection for Bulk and Single-cell Gene Expression Data

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Genomics, Proteomics & Bioinformatics 2024年第3期22卷 85-90页

作者： Peng Jia Xuanhao Yang Xiaofei Yang Tingjie Wang Yu Xu Kai Ye Department of Gynecology and Obstetrics Center for Mathematical MedicalThe First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061China MOE Key Lab for Intelligent Networks&Networks Security Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China School of Automation Science and Engineering Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China School of Computer Science and Technology Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China Genome Institute The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061China School of Life Science and Technology Xi’an Jiaotong UniversityXi’an 710049China

Microsatellite instability(MSI)is an indispensable biomarker in cancer ***,MSI scoring methods by high-throughput omics methods have gained popularity and demonstrated better performance than the gold standard method for MSI ***,the MSI detection method on expression data,especially single-cell expression data,is still lacking,limiting the scope of clinical application and prohibiting the investigation of MSI at a single-cell ***,we developed MSIsensor-RNA,an accurate,robust,adaptable,and standalone software to detect MSI status based on expression values of MSI-associated *** demonstrated the favorable performance and promise of MSIsensor-RNA in both bulk and single-cell gene expression data in multiplatform technologies including RNA sequencing(RNA-seq),microarray,and single-cell ***-RNA is a versatile,efficient,and robust method for MSI status detection from both bulk and single-cell gene expression data in clinical studies and ***-RNA is available at https://***/xjtu-omics/msisensor-rna.

关键词： Microsatellite instability Gene expression Single-cell RNA-seq RNA-seq Microarray

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RGH: An efficient RSU-aided group-based hierarchical privacy enhancement protocol for VANETs

RGH: An efficient RSU-aided group-based hierarchical privacy...

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13th International Conference on Web-Age Information Management, WAIM 2012

作者： Yang, Tao Kong, Lingbo Yu, Liangwen Hu, Jianbin Chen, Zhong MoE Key Lab. of High Confidence Software Technologies Peking University 100871 Beijing China MoE Key Lab. of Computer Networks and Information Security Peking University 100871 Beijing China School of Electronics Engineering and Computer Science Peking University 100871 Beijing China School of Software Engineering Beijing Jiaotong University 100044 Beijing China

ISBN: (纸本)9783642322808

VANETs are gaining significant prominence from both academia and industry in recent years. In this paper, we introduce an Efficient RSU-aided Group-based Hierarchical Privacy Enhancement Protocol for VANETs. The protocol exploits the Road-Side-Unit (RSU) to form a temporary group based on the vehicles around it. As the group leader, the RSU takes charge of the verification of the member car through the Revocation List from the DoT (Department of Transportation). The RSU also generates the session key and determines the configuration for the group. The RSU handles the message from the group member, and then sends it to other group members. RSUs have hierarchical security because of the real environment secure threats. RSUs are divided into High-level RSU (HRSU) and Low-level RSU (LRSU). HRSU inserts a message-related trace entry into the trace log while LRSU attaches trace Tag on the message. HRSU has to submit the trace log to the Department of Audit (DoA) by secure way periodically. If required, DoA can trace out the disputed message's real signer with the cooperation of the DoT. Comparison with other existing classic schemes in the literature has been performed to show the efficiency and applicability of our scheme. © 2012 Springer-Verlag.

关键词： Vehicular ad hoc networks

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MisDis: An efficent misbehavior discovering method based on accountability and state machine in VANET

MisDis: An efficent misbehavior discovering method based on ...

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15th Asia-Pacific Web Conference on Web Technologies and Applications, APWeb 2013

作者： Yang, Tao Xin, Wei Yu, Liangwen Yang, Yong Hu, Jianbin Chen, Zhong MoE Key Lab. of High Confidence Software Technologies Peking University 100871 Beijing China MoE Key Lab. of Computer Networks and Information Security Peking University 100871 Beijing China School of Electronics Engineering and Computer Science Peking University 100871 Beijing China School of Software Engineering Beijing Jiaotong University 100044 Beijing China

ISBN: (纸本)9783642374005

VANET has some prominent features such as channel-opening, large-scale, fast, dynamic-changing, so there is some misbehavior vehicles. Due to the large number of vehicles, even if there is only 1% percent of misbehavior vehicles, there can be thousands of misbehavior vehicles. How to identify these vehicles quickly, and then use appropriate cancellation and isolation measures to reduce system losses to its minimum and controllable range. In this paper, we propose MisDis, a method that can identify misbehavior vehicle by implementing state automata and supervision, as well as a special security log to record the behavioral characteristics of the target vehicle. If the host vehicle violates the established security policy, then the system need to record the behavioral and try to dump to a safer roadside unit or department in charge. © 2013 Springer-Verlag.

关键词： Vehicles

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