Search results for "phrase"

Hits ?▲	Authors	Title	Venue	Year	Link	Author keywords
107	Mingjie Zhu, Shuming Shi 0001, Nenghai Yu, Ji-Rong Wen	Can phrase indexing help to process non-phrase queries?	CIKM	2008	DBLP DOI BibTeX RDF	compact phrase indexing, dynamic index pruning, phrase index, top-k, term proximity
103	Akiyo Kano, Janet C. Read, Alan J. Dix	Children's phrase set for text input method evaluations.	NordiCHI	2006	DBLP DOI BibTeX RDF	phrase set, evaluation, children, text entry, keyboard
95	Marcello Federico, Nicola Bertoldi	A word-to-phrase statistical translation model.	ACM Trans. Speech Lang. Process.	2005	DBLP DOI BibTeX RDF	phrase-based translation, phrase-pair extraction, dynamic programming, search algorithm, Statistical machine translation
91	Wei Zhang 0008, Shuang Liu, Clement T. Yu, Chaojing Sun, Fang Liu 0019, Weiyi Meng	Recognition and classification of noun phrases in queries for effective retrieval.	CIKM	2007	DBLP DOI BibTeX RDF	complex phrase, dictionary phrase, proper noun, simple phrase, information retrieval, verification, feedback, noun phrases
86	Zhendong Yang, Wei Pang, Jinhua Du, Wei Wei 0036, Bo Xu 0002	Some Improvements in Phrase-Based Statistical Machine Translation.	ISCSLP	2006	DBLP DOI BibTeX RDF	phrase-based translation, minimum error rate training, phrase-template, re-scoring
78	Hendra Setiawan, Haizhou Li 0001, Min Zhang 0005, Beng Chin Ooi	Phrase-Based Statistical Machine Translation: A Level of Detail Approach.	IJCNLP	2005	DBLP DOI BibTeX RDF
78	Hugh E. Williams, Justin Zobel, Dirk Bahle	Fast phrase querying with combined indexes.	ACM Trans. Inf. Syst.	2004	DBLP DOI BibTeX RDF	Nextword indexes, phrase queries, Web search, query evaluation
78	Chau Q. Nguyen, Tuoi T. Phan	Key phrase extraction: a hybrid assignment and extraction approach.	iiWAS	2009	DBLP DOI BibTeX RDF	Vietnamese key phrase extraction, key phrase, natural language processing, Wikipedia, word segmentation, part-of-speech
70	Bo Jin 0001, Hongfei Teng, Yanjun Shi, Fuzheng Qu	Chinese Patent Mining Based on Sememe Statistics and Key-Phrase Extraction.	ADMA	2007	DBLP DOI BibTeX RDF	Key-Phrase, Sememe Statistics, Data Mining, Patent
70	Young-In Song, Kyoung-Soo Han, Sang-Bum Kim, So-Young Park, Hae-Chang Rim	A novel retrieval approach reflecting variability of syntactic phrase representation.	J. Intell. Inf. Syst.	2008	DBLP DOI BibTeX RDF	Structural language model, Syntactic phrase, Head-modifier pair, Weighting phrases, Variability of phrase, Information retrieval, Retrieval model
70	Khaled M. Hammouda, Mohamed S. Kamel	Document Similarity Using a Phrase Indexing Graph Model.	Knowl. Inf. Syst.	2004	DBLP DOI BibTeX RDF	Phrase matching, Phrase indexing, Document Index Graph, Document representation, Document similarity
62	Jun Mao, Gang Cheng, Yanxiang He	Phrase-Based Statistical Language Modeling from Bilingual Parallel Corpus.	ESCAPE	2007	DBLP DOI BibTeX RDF
62	Jesús Tomás, Jaime Lloret 0001, Francisco Casacuberta	Phrase-Based Statistical Machine Translation Using Approximate Matching.	IbPRIA (1)	2007	DBLP DOI BibTeX RDF
62	Yong-Zeng Xue, Sheng Li 0003, Tiejun Zhao, Muyun Yang, Jun Li	Bilingual Phrase Extraction from N-Best Alignments.	ICICIC (3)	2006	DBLP DOI BibTeX RDF
58	Qing-Fang Zheng, Wen Gao 0001	Constructing visual phrases for effective and efficient object-based image retrieval.	ACM Trans. Multim. Comput. Commun. Appl.	2008	DBLP DOI BibTeX RDF	visual phrase, Content-based image retrieval, SIFT, inverted index, object-based image retrieval, local image descriptor
58	Robert D. Cameron	Extending Context-Free Grammars with Permutation Phrases.	LOPLAS	1993	DBLP DOI BibTeX RDF	free-order construct, permutation phrase, context-free grammar
53	Hung Chim, Xiaotie Deng	Efficient Phrase-Based Document Similarity for Clustering.	IEEE Trans. Knowl. Data Eng.	2008	DBLP DOI BibTeX RDF
53	Johan Hall, Joakim Nivre	Parsing Discontinuous Phrase Structure with Grammatical Functions.	GoTAL	2008	DBLP DOI BibTeX RDF
53	Ryou Morita, Takehisa Onisawa	Phrase animation generation reflecting impression of words.	Advances in Computer Entertainment Technology	2008	DBLP DOI BibTeX RDF	impression space, impression words, kinetic typography
53	Dirk Bahle, Hugh E. Williams, Justin Zobel	Optimised Phrase Querying and Browsing of Large Text Databases.	ACSC	2001	DBLP DOI BibTeX RDF
53	Ryan Richardson, Edward A. Fox	Using bilingual ETD collections to mine phrase translations.	JCDL	2007	DBLP DOI BibTeX RDF	electronic theses and dissertations, phrase translation, machine translation
53	Yongzheng Zhang 0001, Nur Zincir-Heywood, Evangelos E. Milios	Narrative text classification for automatic key phrase extraction in web document corpora.	WIDM	2005	DBLP DOI BibTeX RDF	acceptable percentage, key phrase extraction, narrative text classification
53	Shigeaki Sakurai, Akihiro Suyama	Rule discovery from textual data based on key phrase patterns.	SAC	2004	DBLP DOI BibTeX RDF	key phrase pattern, text mining, e-mail, fuzzy decision tree
53	Dirk Bahle, Hugh E. Williams, Justin Zobel	Efficient phrase querying with an auxiliary index.	SIGIR	2002	DBLP DOI BibTeX RDF	evaluation efficiency, index representation, nextword index, phrase query evaluation, stopping, indexing, query evaluation, inverted index
50	Christoph Tillmann, Tong Zhang 0001	A block bigram prediction model for statistical machine translation.	ACM Trans. Speech Lang. Process.	2007	DBLP DOI BibTeX RDF	stochastic gradient descent, machine learning, maximum entropy, Statistical machine translation
50	Lawrence H. Reeve, Hyoil Han	CONANN: An Online Biomedical Concept Annotator.	DILS	2007	DBLP DOI BibTeX RDF	Biomedical semantic annotation, biomedical concept mapping, concept annotation
50	Eugene E. McDonnell	Life: Nasty, Brutish, and Short.	APL	1988	DBLP DOI BibTeX RDF	APL
50	Qing-Fang Zheng, Wei-Qiang Wang, Wen Gao 0001	Effective and efficient object-based image retrieval using visual phrases.	ACM Multimedia	2006	DBLP DOI BibTeX RDF	visual phrase, SIFT, inverted index, object-based image retrieval
49	Matthew Chang, Chung Keung Poon	Efficient Phrase Querying with Common Phrase Index.	ECIR	2006	DBLP DOI BibTeX RDF
49	Lixin Shi, Jian-Yun Nie	Integrating phrase inseparability in phrase-based model.	SIGIR	2009	DBLP DOI BibTeX RDF	inseparability, phrase model, language model
45	Hany Hassan, Khalil Sima'an, Andy Way	Syntactically Lexicalized Phrase-Based SMT.	IEEE Trans. Speech Audio Process.	2008	DBLP DOI BibTeX RDF
45	Xu-Ling Zheng, Changle Zhou, Xiaodong Shi, Tangqiu Li, Yidong Chen	Automatic Acquisition of Phrase Semantic Rule for Chinese.	AIRS	2008	DBLP DOI BibTeX RDF	association rules, corpus, Semantic rules, HowNet
45	Miro Lehtonen, Antoine Doucet	Phrase Detection in the Wikipedia.	INEX	2007	DBLP DOI BibTeX RDF
45	Lin Xu, Xiaoguang Cao, Bufeng Zhang, Mu Li 0001	Comparing and Integrating Alignment Template and Standard Phrase-Based Statistical Machine Translation.	CICLing	2007	DBLP DOI BibTeX RDF
45	Cynthia Kuo, Sasha Romanosky, Lorrie Faith Cranor	Human selection of mnemonic phrase-based passwords.	SOUPS	2006	DBLP DOI BibTeX RDF	mnemonic phrases, password cracking, password selection, user studies
45	Yu-Chieh Wu, Jie-Chi Yang, Yue-Shi Lee, Show-Jane Yen	Efficient and Robust Phrase Chunking Using Support Vector Machines.	AIRS	2006	DBLP DOI BibTeX RDF
45	Andrzej Czyzewski, Marek Szczerba, Bozena Kostek	Musical Phrase Representation and Recognition by Means of Neural Networks and Rough Sets.	Trans. Rough Sets	2004	DBLP DOI BibTeX RDF
45	Hung V. Nguyen, P. Velamuru, Deepak Kolippakkam, Hasan Davulcu, Huan Liu, M. Ates	Mining "Hidden Phrase" Definitions from the Web.	APWeb	2003	DBLP DOI BibTeX RDF
45	Fernando López-Ostenero, Julio Gonzalo, Anselmo Peñas, Felisa Verdejo	Noun Phrase Translations for Cross-Language Document Selection.	CLEF	2001	DBLP DOI BibTeX RDF
45	Atsuhiro Takasu, Takashi Yanase, Teruhito Kanazawa, Jun Adachi	Music Structure Analysis and Its Application to Theme Phrase Extraction.	ECDL	1999	DBLP DOI BibTeX RDF
45	Qing Chen, Tianshun Yao	Flattened Syntactical Phrase-Based Translation Model for SMT.	ICCPOL	2009	DBLP DOI BibTeX RDF	flattened syntactical phrase, synchronous grammar, syntactical structure
45	Yang Xu, Fan Ding, Bin Wang 0004	Utilizing phrase based semantic information for term dependency.	SIGIR	2008	DBLP DOI BibTeX RDF	information retrieval, Markov random field, Wikipedia, term dependency, phrase
45	Thai Phuong Nguyen, Akira Shimazu	Improving phrase-based statistical machine translation with morphosyntactic transformation.	Mach. Transl.	2006	DBLP DOI BibTeX RDF	Phrase-based statistical MT, Morphological transformation, Syntactic transformation, Pharaoh decoder, BLEU score, Preprocessing, Reordering
45	Vidyarani M. Dyaberi, Hari Sundaram, Jodi James, Gang Qian	Phrase structure detection in dance.	ACM Multimedia	2004	DBLP DOI BibTeX RDF	structure, dance, phrase, topological graph
45	Changjie Tang, Tong Li, Changyu Liu, Yin Ge	Classify Web Document by Key Phrase Understanding.	WAIM	2001	DBLP DOI BibTeX RDF	File discrimination, Key sentence template, Phrase-understanding
41	Hong-Nhung Nguyen Thi, Dien Dinh	A Syntactic-based Word Re-ordering for English-Vietnamese Statistical Machine Translation System.	PRICAI	2008	DBLP DOI BibTeX RDF	word re-ordering, syntactic-based word re-ordering rule, Statistical machine translation, parse tree
41	Ki-Young Lee, Jong Kuk Kim, Myung Jin Bae 0001	Statistical Pitch Conversion Approaches Based on Korean Accentual Phrases.	PRICAI	2004	DBLP DOI BibTeX RDF
41	Mohamed Mahdi Malik, Jean Royauté	A Predicate Database for Assisting the Design of a Lexicon-Grammar of Predicative Nouns.	LTC	2007	DBLP DOI BibTeX RDF	Predicate noun phrase, Lexicon-grammar, Argument role, Nominal and verbal constructions, Database, Nominalization
41	Chun-Jen Lee, Jason S. Chang, Jyh-Shing Roger Jang	Alignment of bilingual named entities in parallel corpora using statistical models and multiple knowledge sources.	ACM Trans. Asian Lang. Inf. Process.	2006	DBLP DOI BibTeX RDF	named entity alignment, phrase translation, Named entity, transliteration, parallel corpora
41	Xue-Mei Bai, Jinji Li, Dong-Il Kim, Jong-Hyeok Lee	Identification of Maximal-Length Noun Phrases Based on Expanded Chunks and Classified Punctuations in Chinese.	ICCPOL	2006	DBLP DOI BibTeX RDF	Maximal-Length Noun Phrase (MNP), Expanded Chunk, Classified Punctuation
41	Satoshi Morinaga, Hiroki Arimura, Takahiro Ikeda, Yosuke Sakao, Susumu Akamine	Key semantics extraction by dependency tree mining.	KDD	2005	DBLP DOI BibTeX RDF	phrase/sentence reconstruction, redundancy reduction, syntactic dependency, tree enumeration, text mining
40	Rei Oguro, Kazuhiko Ozeki, Kazuyuki Takagi, Yujie Zhang	An Efficient Algorithm for Japanese Sentence Compaction Based on Phrase Importance and Inter-Phrase Dependency.	TSD	2000	DBLP DOI BibTeX RDF
37	John Tinsley, Mary Hearne, Andy Way	Exploiting Parallel Treebanks to Improve Phrase-Based Statistical Machine Translation.	CICLing	2009	DBLP DOI BibTeX RDF
37	Naoki Yasuraoka, Takehiro Abe, Katsutoshi Itoyama, Toru Takahashi 0001, Tetsuya Ogata, Hiroshi G. Okuno	Changing timbre and phrase in existing musical performances as you like: manipulations of single part using harmonic and inharmonic models.	ACM Multimedia	2009	DBLP DOI BibTeX RDF	music manipulation, performance rendering, sound source extraction, timbre mixing, signal processing
37	Peerasak Intarapaiboon, Ekawit Nantajeewarawat, Thanaruk Theeramunkong	Information Extraction from Thai Text with Unknown Phrase Boundaries.	PAKDD	2009	DBLP DOI BibTeX RDF
37	Yonggang Deng, William J. Byrne	HMM Word and Phrase Alignment for Statistical Machine Translation.	IEEE Trans. Speech Audio Process.	2008	DBLP DOI BibTeX RDF
37	Hung V. Nguyen, Hasan Davulcu	Mining Search-Phrase Definitions from Item Descriptions.	ICDE	2008	DBLP DOI BibTeX RDF
37	Einar W. Høst, Bjarte M. Østvold	The Java Programmer's Phrase Book.	SLE	2008	DBLP DOI BibTeX RDF
37	Yoshinori Takeuchi, Ken Saito, Ayaka Ito, Noboru Ohnishi, Shigeyoshi Iizuka, Shinya Nakajima	Extracting Pointing Object with Demonstrative Speech Phrase for Remote Transcription in Lecture.	ICCHP	2008	DBLP DOI BibTeX RDF
37	M. Barouni-Ebrahimi, Ali A. Ghorbani 0001	A Novel Approach for Frequent Phrase Mining in Web Search Engine Query Streams.	CNSR	2007	DBLP DOI BibTeX RDF
37	Mana Kobuchi-Philip	A Modifier Hypothesis on the Japanese Indeterminate Quantifier Phrase.	JSAI	2007	DBLP DOI BibTeX RDF
37	Maria Soledad Pera, Yiu-Kai Ng	Finding Similar RSS News Articles Using Correlation-Based Phrase Matching.	KSEM	2007	DBLP DOI BibTeX RDF
37	Sofía N. Galicia-Haro, Alexander F. Gelbukh	Web-Based Model for Disambiguation of Prepositional Phrase Usage.	MICAI	2007	DBLP DOI BibTeX RDF
37	Ziping Zhao 0001, Tingjian Zhao, Yaoting Zhu	A Maximum Entropy Markov Model for Prediction of Prosodic Phrase Boundaries in Chinese TTS.	GrC	2007	DBLP DOI BibTeX RDF
37	Rile Hu, Chengqing Zong, Bo Xu 0002	An approach to automatic acquisition of translation templates based on phrase structure extraction and alignment.	IEEE Trans. Speech Audio Process.	2006	DBLP DOI BibTeX RDF
37	Roxana Girju	Out-of-context noun phrase semantic interpretation with cross-linguistic evidence.	CIKM	2006	DBLP DOI BibTeX RDF	classification, SVM, semantic relations, computational semantics
37	M. Barouni-Ebrahimi, Ali A. Ghorbani 0001	A Phrase Recommendation Algorithm Based on Query Stream Mining in Web Search Engines.	WAW	2006	DBLP DOI BibTeX RDF
37	Jae Sung Lee, Hye Mi Yun	Approximate Phrase Match to Compile Synonymous Translation Terms for Korean Medical Indexing.	AIRS	2005	DBLP DOI BibTeX RDF
37	Khaled M. Hammouda, Mohamed S. Kamel	Efficient Phrase-Based Document Indexing for Web Document Clustering.	IEEE Trans. Knowl. Data Eng.	2004	DBLP DOI BibTeX RDF
37	Zhongchao Fei, Jian Liu, Gengfeng Wu	Sentiment Classification Using Phrase Patterns.	CIT	2004	DBLP DOI BibTeX RDF
37	Bruno Pôssas, Nivio Ziviani, Berthier A. Ribeiro-Neto, Wagner Meira Jr.	Processing Conjunctive and Phrase Queries with the Set-Based Model.	SPIRE	2004	DBLP DOI BibTeX RDF
37	Jesús Tomás, Francisco Casacuberta	Combining Phrase-Based and Template-Based Alignment Models in Statistical Translation.	IbPRIA	2003	DBLP DOI BibTeX RDF
37	I. Scott MacKenzie, R. William Soukoreff	Phrase sets for evaluating text entry techniques.	CHI Extended Abstracts	2003	DBLP DOI BibTeX RDF	pen and tactile input, input and interaction technologies, hand held devices and mobile computing
37	Hatem Haddad	French Noun Phrase Indexing and Mining for an Information Retrieval System.	SPIRE	2003	DBLP DOI BibTeX RDF
37	Manolis Maragoudakis, Panagiotis Zervas, Nikos Fakotakis, George K. Kokkinakis	A Data-Driven Framework for Intonational Phrase Break Prediction.	TSD	2003	DBLP DOI BibTeX RDF
37	Sargur N. Srihari	A Survey of Sequential Combination of Word Recognizers in Handwritten Phrase Recognition at CEDAR.	Multiple Classifier Systems	2000	DBLP DOI BibTeX RDF
37	Ken Barker 0002, Nadia Cornacchia	Using Noun Phrase Heads to Extract Document Keyphrases.	AI	2000	DBLP DOI BibTeX RDF
37	Wessel Kraaij, Renée Pohlmann	Comparing the Effect of Syntactic vs. Statistical Phrase Indexing Strategies for Dutch.	ECDL	1998	DBLP DOI BibTeX RDF
37	Zhixu Li, Pei Li, Wei Wei, Hongyan Liu 0002, Jun He 0008, Tao Liu 0001, Xiaoyong Du 0001	AutoPCS: A Phrase-Based Text Categorization System for Similar Texts.	APWeb/WAIM	2009	DBLP DOI BibTeX RDF	Phrase-based, BOP, Similar Texts, Text Classification
37	Vinh Van Nguyen, Thai Phuong Nguyen, Akira Shimazu, Minh Le Nguyen 0001	A Reordering Model for Phrase-Based Machine Translation.	GoTAL	2008	DBLP DOI BibTeX RDF	Phrase-based Statistical Machine Translation, Natural Language Processing, Machine Translation
37	Miro Lehtonen, Antoine Doucet	XML-aided phrase indexing for hypertext documents.	SIGIR	2008	DBLP DOI BibTeX RDF	word sequence, XML, text mining, XML retrieval, phrase
37	Hua Wu 0003, Haifeng Wang 0001	Pivot language approach for phrase-based statistical machine translation.	Mach. Transl.	2007	DBLP DOI BibTeX RDF	Pivot language, Phrase-based statistical machine translation, Scarce bilingual resources
37	Sylvain Degeilh, Anne Preller	Efficiency of Pregroups and the French Noun Phrase.	J. Log. Lang. Inf.	2005	DBLP DOI BibTeX RDF	French noun phrase, decision procedure, algorithmic complexity, categorial grammars, recognition algorithm, pregroups
37	Motohiro Nakanishi, Michihiro Kobayakawa, Mamoru Hoshi, Tadashi Ohmori	A method for extracting a musical unit to phrase music data in the compressed domain of TwinVQ audio compression.	ICME	2005	DBLP DOI BibTeX RDF	Laplacian filter, musical unit extraction, music data phrase, TwinVQ audio compression, autocorrelation sequence
37	Rupali Sharma, S. Raman 0001	Phrase-based Text Representation for Managing the Web Documents.	ITCC	2003	DBLP DOI BibTeX RDF	phrase-based text representation, name recognition, semantic web, text retrieval
37	Bin Wang 0004, Xueqi Cheng, Shuo Bai	Example-based phrase translation in Chinese-English CLIR.	SIGIR	2002	DBLP DOI BibTeX RDF	phrase translation, CLIR, example-based
36	Yonggang Deng, Jia Xu 0004, Yuqing Gao	Phrase Table Training for Precision and Recall: What Makes a Good Phrase and a Good Phrase Pair?	ACL	2008	DBLP BibTeX RDF
36	Ying Zhang 0048, Stephan Vogel	An efficient phrase-to-phrase alignment model for arbitrarily long phrase and large corpora.	EAMT	2005	DBLP BibTeX RDF
33	Olga Vechtomova	Noun phrases in interactive query expansion and document ranking.	Inf. Retr.	2006	DBLP DOI BibTeX RDF	Document ranking, Interactive query expansion, Noun phrases
33	Ken Chen 0001, Mark Hasegawa-Johnson, Aaron Cohen, Sarah Borys, Sung-Suk Kim, Jennifer Cole 0001, Jeung-Yoon Choi	Prosody dependent speech recognition on radio news corpus of American English.	IEEE Trans. Speech Audio Process.	2006	DBLP DOI BibTeX RDF
33	Kiwamu Yamagata, Satoshi Fukutomi, Kazuyuki Takagi, Kazuhiko Ozeki	Sentence Compression Using Statistical Information About Dependency Path Length.	TSD	2006	DBLP DOI BibTeX RDF
33	Olga Vechtomova	The Role of Multi-word Units in Interactive Information Retrieval.	ECIR	2005	DBLP DOI BibTeX RDF
33	Byeongchang Kim 0001, Gary Geunbae Lee, Jong-Hyeok Lee	Morpheme-based grapheme to phoneme conversion using phonetic patterns and morphophonemic connectivity information.	ACM Trans. Asian Lang. Inf. Process.	2002	DBLP DOI BibTeX RDF	CCV LTS rule, grapheme-to-phoneme conversion, morphophonemic modeling, phonetic pattern dictionary, text-to-speech system
33	N. Jesper Larsson, Alistair Moffat	Offline Dictionary-Based Compression.	Data Compression Conference	1999	DBLP DOI BibTeX RDF
33	Goran Nenadic, Irena Spasic	The Acquisition of Some Lexical Constraints from Corpora.	TSD	1999	DBLP DOI BibTeX RDF
33	Rodney Farrow, Thomas J. Marlowe, Daniel M. Yellin	Composable Attribute Grammars: Support for Modularity in Translator Design and Implementation.	POPL	1992	DBLP DOI BibTeX RDF
33	Yongli Liu, Chao Li 0001, Pin Zhang, Zhang Xiong 0001	A Query Expansion Algorithm Based on Phrases Semantic Similarity.	ISIP	2008	DBLP DOI BibTeX RDF	similarity, query expansion, phrase
33	Wentao Gu, Keikichi Hirose, Hiroya Fujisaki	Comparison of Perceived Prosodic Boundaries and Global Characteristics of Voice Fundamental Frequency Contours in Mandarin Speech.	ISCSLP	2006	DBLP DOI BibTeX RDF	prosodic hierarchy, perceived prosodic boundary, F0 contour, command-response model, perception, production, phrase, Mandarin
33	Xiaohong Wu, Sylviane Cardey, Peter Greenfield	Some Problems of Prepositional Phrases in Machine Translation.	FinTAL	2006	DBLP DOI BibTeX RDF	prepositional phrase attachment (PP attachment), machine translation (MT), controlled language technique, grammatical functions, translation information, equivalent, disambiguation
33	Ruey-Ming Chao, Chi-Shun Wang	Knowledge as Basis Broker - The Research of Matching Customers Problems and Professionals Métiers.	ICONIP (3)	2006	DBLP DOI BibTeX RDF	Knowledge-based agent/broker, natural language arrangement, Chinese phrase-cutting, natural language, Fuzzy Sets theory