检索结果-南通市图书馆

Immune algorithm for discretization of decision systems in rough set theory

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第4期7卷 602-606页

作者： JIA Ping DAI Jian-hua CHEN Wei-dong PAN Yun-he ZHU Miao-liang institute of Artificial intelligence Zhejiang University Hangzhou 310027 China

Rough set theory plays an important role in knowledge discovery, but cannot deal with continuous attributes, thus discretization is a problem which we cannot neglect. And discretization of decision systems in rough set theory has some particular characteristics. Consistency must be satisfied and cuts for discretization is expected to be as small as possible. Consistent and minimal discretization problem is NP-complete. In this paper, an immune algorithm for the problem is proposed. The correctness and effectiveness were shown in experiments. The discretization method presented in this paper can also be used as a data pre- treating step for other symbolic knowledge discovery or machine learning methods other than rough set theory.

关键词： Rough sets Discretization Immune algorithm Decision system

A new implementation of image-processing engine for 3D visualization and stereo video stream display

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2014年第5期59卷 459-467页

作者： Chenyang Ge Zuoxun Hou Huimin Yao Nanning Zheng Wenzhe Zhao institute of Artificial intelligence and Robotics Xi’an Jiaotong University

This paper presents a new implementation of a high-definition image-processing engine,which mainly targets the 3-dimensional(3D)visualization and stereo video stream display of binocular display *** engine is compatible with the mainstream analog and digital stereo videos in component format and is able to receive stereo composite video broadcast signals using an integrated analog stereo video *** four modules include a spatiotemporal scaling transform engine,a 2D–3D converter,an image animating engine,and a 2D scalar operating in pipeline architecture to implement the video format conversion and the stereo effect ***,the data access,hardware structure,and system-level configurations are ***,the proposed architecture is realized by 0.18 lm CMOS *** application-specific integrated circuit verification results show that the engine can generate a strong feeling of 3D immersion and highdefinition image quality with minimal *** chip has wide compatibility and an uppermost 1080P-processing capacity,which has approximately 3.5 million gates with about 43 mm2 die size.

关键词：图像处理引擎数字立体声三维可视化显示设备视频流模拟立体声视频格式转换 CMOS技术

NEW VISUAL METHOD FOR FREE-FORM SURFACE RECONSTRUCTION

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2002年第1期15卷 35-39页

作者： Xiong Hanwei Artificial intelligence institute，Zhejiang University，Hangzhou 310027，China Zhang Xiangwei Guangdong University of Technology Artificial intelligence institute Zhejiang University Hangzhou 310027 China

A new method is put forward combining computer vision with computer aidedgeometric design (CAGD) to resolve the problem of free-form surface reconstruction. The surface isfirst subdivided into N-sided Gregory patches, and a stereo algorithm is used to reconstruct theboundary curves. Then, the cross boundary tangent vectors are computed through reflectance *** last, the whole surface can be reconstructed jointing these patches with G^1 continuity(tangentcontinuity). Examples on synthetic images are given.

关键词： Reverse engineering Free-form surface design Computer vision

New Layered SOA-Based Architecture for Multi-robots Cooperative Online SLAM

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2014年第1期23卷 25-30页

作者： CAI Yunfei TANG Zhenmin ZHAO Chunxia institute of Pattern Recognition and Artificial intelligence Nanjing University of Science and Technology

A new layered multi-robots architecture for cooperative online simultaneous localization and mapping based on Service-oriented architecture(SOA) is proposed. This architecture is constructed by the concepts of service-oriented and loosely coupled center *** methods make robots' underlying function realization be transparent in cooperation and avoid the impact affected by robot heterogeneous characteristics, which will be beneficial to the system construction, expansion, restructuring and maintenance. All data packages follow the SOA unified data format, which can avoid the impact affected by sensor heterogeneous characteristics. The point to point serving model reduces the path of data transmission which can improve the timeliness of the system. All of these features can satisfy the requirements of multi-robots cooperative online SLAM. The simulation results show the feasibility, applicability and practicability of this architecture.

关键词： Service-oriented architecture(SOA) Multi-robot cooperative online SLAM(MRCO-SLAM) Loosely coupled

Application of Blockchain Sharding Technology in Chinese Medicine Traceability System

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第7期76卷 35-48页

作者： Fuan Xiao Tong Lai Yutong Guan Jiaming Hong Honglai Zhang Guoyu Yang Zhengfei Wang School of medical Information Engineering Guangzhou University of Chinese MedicineGuangzhou510006China institute of Artificial intelligence and Blockchain Guangzhou UniversityGuangzhou510006China

Traditional Chinese Medicine(TCM)is one of the most promising programs for disease prevention and ***,the quality of TCM has garnered much *** ensure the quality of TCM,many works are based on the blockchain scheme to design the traceability scheme of TCM to trace its *** these schemes can ensure the integrity,sharability,credibility,and immutability of TCM more effectively,many problems are exposed with the rapid growth of TCM data in blockchains,such as expensive overhead,performance bottlenecks,and the traditional blockchain architecture is unsuitable for TCM data with dynamic *** by the aforementioned problems,we propose a novel and lightweight TCM traceability architecture based on the blockchain using sharding(LBS-TCM).Compared to the existing blockchain-based TCM traceability system,our architecture utilizes sharding to develop a novel traceability mechanism that supports more convenient traceability operations for TCM requirements such as uploading,querying,and ***,our architecture consists of a leader shard blockchain layer as its main component,which employs a sharding mechanism to conveniently TCM *** evaluations demonstrated that our architecture showed better performance in many aspects compared to traditional blockchain architectures,such as TCM transaction processing,TCM transaction querying,TCM uploading,*** our architecture,tracing TCM has become a very efficient operation,which ensures the quality of TCM and provides great convenience for subsequent TCM analysis and retrospective research.

关键词： Blockchain sharding traceability traditional chinese medicine

Bayesian brain computing and the free-energy principle: an interview with Karl Friston

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2024年第5期11卷 87-89页

作者： Wenlian Lu the institute of Science and Technology for Brain-Inspired intelligence of Fudan University

The free-energy principle entails the Bayesian brain hypothesis that can be implemented by many schemes considered in this field. The combination of multimodal brain imaging and free-energy minimization has shown promise in unraveling complex brain dynamics and understanding the interactions among distinct brain regions. The Bayesian mechanics of brain computing gives a unique route to understanding authentic(neuromimetic) intelligence and, more importantly, points towards the development of brain-inspired intelligence.

关键词： interview bayesian brain karl with computing free-energy friston principle

An Adaptive Rapidly-Exploring Random Tree

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2022年第2期9卷 283-294页

作者： Binghui Li Badong Chen institute of Artificial intelligence and Robotics Xi’an Jiaotong UniversityXi’an 710049China IEEE

Sampling-based planning algorithms play an important role in high degree-of-freedom motion planning(MP)problems,in which rapidly-exploring random tree(RRT)and the faster bidirectional RRT(named RRT-Connect)algorithms have achieved good results in many planning ***,sampling-based methods have the inherent defect of having difficultly in solving planning problems with narrow ***,several algorithms have been proposed to overcome these *** one of the improved algorithms,Rapidlyexploring random vines(RRV)can achieve better results,but it may perform worse in cluttered environments and has a certain environmental *** this paper,we present a new improved planning method based on RRT-Connect and RRV,named adaptive RRT-Connect(ARRT-Connect),which deals well with the narrow passage environments while retaining the ability of RRT algorithms to plan paths in other *** proposed planner is shown to be adaptable to a variety of environments and can accomplish path planning in a short time.

关键词： Narrow passage path planning rapidly-exploring random tree(RRT)-Connect sampling-based algorithm

FragDPI: a novel drug-protein interaction prediction model based on fragment understanding and unified coding

在线全文

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2023年第5期17卷 207-216页

作者： Zhihui YANG Juan LIU Xuekai ZHU Feng YANG Qiang ZHANG Hayat Ali SHAH institute of Artificial intelligence School of Computer ScienceWuhan UniversityWuhan 430072china

Prediction of drug-protein binding is critical for virtual drug *** deep learning methods have been proposed to predict the drug-protein binding based on protein sequences and drug representation ***,most existing methods extract features from protein and drug sequences *** a result,they can not learn the features characterizing the drug-protein *** addition,the existing methods encode the protein(drug)sequence usually based on the assumption that each amino acid(atom)has the same contribution to the binding,ignoring different impacts of different amino acids(atoms)on the ***,the event of drug-protein binding usually occurs between conserved residue fragments in the protein sequence and atom fragments of the drug ***,a more comprehensive encoding strategy is required to extract information from the conserved *** this paper,we propose a novel model,named FragDPI,to predict the drug-protein binding *** other methods,we encode the sequences based on the conserved fragments and encode the protein and drug into a unified ***,we adopt a novel two-step training strategy to train *** pre-training step is to learn the interactions between different fragments using unsupervised *** fine-tuning step is for predicting the binding affinities using supervised *** experiment results have illustrated the superiority of FragDPI.

关键词： affinity score drug-protein interaction BERT Bi-Transformer virtual drug screening

VLSI Design for High-Precision Three-Dimensional Depth Perception Chip

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2021年第3期30卷 556-560页

作者： GE Chenyang YAO Huimin ZHOU Yanhui DENG Pengchao institute of Artificial intelligence and Robotics Xi'an Jiaotong University institute of electromagnetic and information technology Xi'an Jiaotong University

This paper presents a Very large scale integration(VLSI) design method for Three-dimensional(3 D) depth perception chip based on infrared coding structure light. The primary sub-modules on the chip contain the speckle pattern preprocessing module, blockmatching disparity estimation, depth mapping and postprocessing. The chip employs pipelining technology,and after Application specific integrated circuit(ASIC)verification, it proves that our chip has more advantages in performance of depth precision(12 bits, 1 mm @ 1 m),image resolution(1280×960), time delay(less than 17 ms),range limit(0.4～6 m). It also can generate more stable and smooth depth map in real-time, which can be used in 3 D recognition, motion capture or scene perception.

关键词： stable depth map image motion analysis depth precision high-precision Three-dimensional depth perception chip infrared coding structure light word length 12.0 bit VLSI design smooth depth map primary sub-modules application specific integrated circuits time 17.0 ms stereo image processing size 1.0 mm speckle pattern motion capture range limit image resolution depth mapping scale integration design method VLSI size 0.4 m to 6.0 m block-matching disparity estimation Application specific integrated circuit verification image matching