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HMM-neural network monophone models for computer-based articulation training for the hearing impaired

HMM-neural network monophone models for computer-based artic...

引用

international conference on Acoustics, Speech, and Signal processing (ICASSP)

作者： M. Devarajan Fansheng Meng P. Hix S.A. Zahorian Department of Electrical and Computer Engineering Old Dominion University Norfolk VA USA

A visual speech training aid for persons with hearing impairments has been developed using a Windows-based multimedia computer. Previous papers (Zahorian, S. et al., Int. Conf. on Spoken language processing, 2002; Zahorian and Nossair, Z.B., IEEE Trans. on Speech and Audio processing, vol.7, no.4, p.414-25, 1999; Zimmer, A. et al., ICASSP, vol.6, p.3625-8, 1998; Zahorian and Jagharghi, A., J. Acoust. Soc. Amer., vol.94, no.4, p.1966-82, 1993) have describe the signal processing steps and display options for giving real-time feedback about the quality of pronunciation for 10 steady-state American English monopthong vowels (/aa/, /iy/, /uw/, /ae/, /er/, /ih/, /eh/, /ao/, /ah/, and /uh/). This vowel training aid is thus referred to as a vowel articulation training aid (VATA). We now describe methods to develop a monophone-based hidden Markov model/neural network recognizer such that real time visual feedback can be given about the quality of pronunciation of short words and phrases. Experimental results are reported which indicate a high degree of accuracy for labeling and segmenting the CVC (consonant-vowel-consonant) database developed for "training" the display.

关键词： Hidden Markov models Computer networks Auditory system natural languages Speech processing Signal processing Auditory displays Steady-state Neural networks Speech recognition

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Phrase-based text representation for managing the Web documents

Phrase-based text representation for managing the Web docume...

引用

international conference on Information Technology: Coding and Computing (ITCC)

作者： R. Sharma S. Raman Department of Computer Science and Engineering Indian Institute of Technology Chennai India

The World Wide Web has provided the facility of bringing information to the fingertips of its users. Since most of the documents available on the web are machine-readable but not machine-understandable, ensuring the retrieval of relevant information continues to be a difficult task. In the traditional text representation approach, high frequency keywords are used as term representatives of text. However, the main drawbacks in this approach are lack of direct relationship between word frequency and its importance, and the effect of the word ambiguities. Considering these shortcomings of the keyword-based method, this paper presents a phrase-based text representation approach that uses rule-based natural language processing (NLP) techniques. Extraction of key-phrases from text documents is based on a process of partial parsing. By making the indexing terms more meaningful through reduction of the ambiguity in words considered in isolation, improvement in retrieval effectiveness is sought to be achieved.

关键词： Semantic Web Indexing Libraries XML Resource description framework Web sites Information retrieval Frequency Joining processes Technology management

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MiTAP: a case study of integrated knowledge discovery tools

MiTAP: a case study of integrated knowledge discovery tools

引用

Annual Hawaii international conference on System Sciences (HICSS)

作者： L. Damianos S. Wohlever R. Kozierok J. Ponte MITRE Corporation USA

The MiTAP system was developed as an experimental prototype using human language technologies for the monitoring of infectious disease outbreaks. The system provides timely, multi-lingual, global information access to analysts, medical experts and individuals involved in humanitarian assistance and relief work. Each day, thousands of articles from electronic information sources spanning multiple languages are automatically captured, translated, tagged, summarized, and presented to users in a variety of ways. Over the course of the past year and half, MiTAP has become a useful tool for real users to solve real problems. The success of MiTAP is greatly attributed to its user-focused design that accommodates the imperfect component technologies and that allows users to interact with the system in familiar ways. We will discuss the problem, the design process, and the implementation from the perspective of services provided and how these services support system capabilities that satisfy user requirements.

关键词： Computer aided software engineering Diseases Information analysis Terrorism natural languages Prototypes Biomedical monitoring Process design Human immunodeficiency virus Bovine

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A METHOD OF knowledge COLLECTION BASED ON WEB TEXT MINING

A METHOD OF KNOWLEDGE COLLECTION BASED ON WEB TEXT MINING

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The Fourth international conference on Systems Science and Systems engineering(ICSSSE’03)

作者： Zhang Zhiyuan College of Humanism & Management,National University of Defense Technology,Hunan 410073,PR.China Tan Yuejin College of Humanism & Management,National University of Defense Technology,Hunan 410073,P.R.China

The World Wide Web servers as huge,widely distributed,global information service center for various *** contains a rich and dynamic collection of hyperlink information and web mining is to discover the access pattern and hidden knowledge from the huge collection of documents plus hyperlink information,access and usage *** mining is divided into three kinds: web content mining,web structure mining and web usage *** content mining includes text mining and multimedia *** these sorts of mining,web text mining is an efficient technique,which discovery valuable and potential knowledge from those semi-/non-structured texts and hypertexts.A kind of new method of knowledge collection based on web text mining is put forward after the deficiency of knowledge collection method facing to documents of specialty knowledge: natural language understanding and expert system is being discussed.A kind of unified knowledge expressive model that can include many sorts of knowledge carriers and knowledge expression method is advanced firstly,XML is used as bridge to describe the structure of texts and then the XML tags of knowledge are designed based upon this *** word materials are being tag processed,knowledge still stays in the original web documents but forms the web documental knowledge base with hierarchical ***,the corresponding knowledge collection method is studied and the knowledge collection system was *** system could understand the users' questions in natural knowledge and find out interrelated knowledge in the document and carry out *** answer the users' questions according to the result of reasoning and achieved semiautomatic knowledge collection of web documents.

关键词： knowledge collection, web text mining, XML

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The Study and Implementation of Finance-domain Chinese Automatic Question-Answering Syste m:FAQAS

The Study and Implementation of Finance-domain Chinese Autom...

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20th international conference on Computer processing of Oriental languages

作者： Li Hongqiao Fan Xiaozhong Li Liangfu Zhang Feng Department of Computer Science and Technology,Beijing Institute of Technology,Beijing 100081

In this paper we present the study and implementation of a Chinese automatic question-answering system named *** is constrained to the domain of finance but can serve to Chinese questions in natural language and texts containing the answers to *** of all,for question analysis we explore a new means that is using a vector for the semantic representation of a question and analyzing questions by the matching of question focus chunks,semantic chunks and question ***,for finance knowledge representation we construct a finance ontology database and finance hownet within the elicitation of the thought of ontology and ***,for answer extracting from finance text,the text was tagged in the head according to it's semantic content,and then the answer is extracted from the mark tree by the question *** prove that it is feasible to use this method to develop question-answering system and is valuable to continue to study it deeply.

关键词： question-answering ontology hownet semantic chunk

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The Research and Application on Hybrid Intelligent CAPP System Based on Object-oriented Model Driving

The Research and Application on Hybrid Intelligent CAPP Syst...

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The Fourth international conference on Parallel and Distributed Computing, Applications and Technologies

作者： JIA Xiao-liang ZHANG Zhen-ming XU Jian-xin HUANG Nai-kang Institute of CAPP & Manufacturing Engineering Software Northwestern Poly-Technical University

The characteristics of interactive,variant,and generative principles applied for Computer Aided Process Planning(CAPP) are discussed in *** on the CAPP platform(CAPPFramework) supported by 863CIMS in China,the key techniques of object-oriented model driving,object-oriented manufacturing-domain knowledge processing technology and hybrid intelligent process planning are presented in detail.

关键词： CAPP object-oriented model driving hybrid intelligent

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Distributed Task Assignment Methods—A Dynamic Algorithm

Distributed Task Assignment Methods—A Dynamic Algorithm

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The Fourth international conference on Parallel and Distributed Computing, Applications and Technologies

作者： Min Fan Zhang Jun-yan Li Wan-pei Yang Guo-wei College of Computer Science and Engineering University of Electronic Science and Technology of China

We consider task assignment problem in distributed *** are chosen by independent processing units（IPUs） which have only the knowledge of: 1,their own situations;and 2,the system's simple feedbacks. We propose a dynamic algorithm with which IPUs can adjust their tasks in an adaptive fashion and in turn help the system getting *** algorithm overcomes an important limitation of previous works,that is,the max reward probability r≥0.5,and can get much better *** correctness is analyzed by Markov *** and comparisons are presented. Reward/penalty dependency,an issue has not been addressed in previous works,is also ***, this algorithm can also be used to solve the general assignment problem.

关键词： distributed system task assignment independent processing unit(IPU) optima

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Chinese-Korean Word Alignment Using Contrastive Analysis and Concept Similarity

Chinese-Korean Word Alignment Using Contrastive Analysis and...

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20th international conference on Computer processing of Oriental languages

作者： Dong-JI Kim Jong-Hyeok Lee Div. of Electrical and Computer Engineering Pohang University of Science and Technology (POSTECH) and Advanced Information Technology Research Center(AITrc) San 31 Hyoja-dong Nam-gu Pohang 790-784 R. of KOREA Div. of Electrical and Computer Engineering Pohang University of Science and Technology (POSTECH) and Advanced Information Technology Research Center(AITrc) San 31 Hyoja-dong Nam-gu Pohang 790-784 R. of KOREA

In a different language pair in terms of linguistic typology and genealogy,such as Chinese and Korean,a conventional method of word alignment does not effectively work and produce low-quality results because of dissimilarity of alignment *** paper redefines the word alignment unit through contrastive analysis of the two languages to improve recall and *** also a two-phase scoring mechanism of concept similarity is proposed to improve the coverage of monolingual *** linguistic knowledge such as similarity of lexical structure and concept similarity is employed in this paper,so a small-sized and general bilingual corpus can also be used to complete word alignment without the traditional statistical *** the experiment,we randomly extracted 200 Chinese-Korean sentence pairs from the Joins Newspaper,and achieved 82.5% precision and 62.8% recall.

关键词： word alignment,contrastive analysis,similarity of lexical structure,concept similarity

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Real-time simultaneous localisation and mapping with a single camera

Real-time simultaneous localisation and mapping with a singl...

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international conference on Computer Vision (ICCV)

作者： Davison Robotics Research Group Department of Engineering Science University of Oxford UK

Ego-motion estimation for an agile single camera moving through general, unknown scenes becomes a much more challenging problem when real-time performance is required rather than under the off-line processing conditions under which most successful structure from motion work has been achieved. This task of estimating camera motion from measurements of a continuously expanding set of self-mapped visual features is one of a class of problems known as Simultaneous Localisation and Mapping (SLAM) in the robotics community, and we argue that such real-time mapping research, despite rarely being camera-based, is more relevant here than off-line structure from motion methods due to the more fundamental emphasis placed on propagation of uncertainty. We present a top-down Bayesian framework for single-camera localisation via mapping of a sparse set of natural features using motion modelling and an information-guided active measurement strategy, in particular addressing the difficult issue of real-time feature initialisation via a factored sampling approach. Real-time handling of uncertainty permits robust localisation via the creating and active measurement of a sparse map of landmarks such that regions can be re-visited after periods of neglect and localisation can continue through periods when few features are visible. Results are presented of real-time localisation for a hand-waved camera with very sparse prior scene knowledge and all processing carried out on a desktop PC.

关键词： Simultaneous localization and mapping Cameras Motion estimation Layout Motion measurement Robot vision systems Bayesian methods Particle measurements Sampling methods Robustness

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Design of Broadband IPv6/IPv4 Dual-Stack Access Router Based on Service Stream

Design of Broadband IPv6/IPv4 Dual-Stack Access Router Based...

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The Fourth international conference on Parallel and Distributed Computing, Applications and Technologies

作者： Jiming Gao Yu Zhang Limin Hou Ziqiang Hou Engineering Research Center of Networking & Digital Signal Processing Institute of Acoustics Chinese Academy of Sciences

Access network is the important part of Internet. But conventional access technologies do not support well on user management,service providing,authentication and accounting at *** paper proposes a new IPv6/IPv4 access router,which integrates access aggregation,edge routing and service policy into one box,and supports different services according to different service streams. The service stream table acts as routing table,neighbor address resolving table and access policy *** can do user authentication and accounting,bi-directional traffic statistics,bi-directional rate control,prepaid traffic limit, access control list and off-line detection.

关键词： IPv6 access router service stream statistics authentication billing

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