Search results for "Part-of-Speech"

Hits ?▲	Authors	Title	Venue	Year	Link	Author keywords
68	Maosong Sun, Dongliang Xu, Benjamin K. Tsou, Huaming Lu	An Integrated Approach to Chinese Word Segmentation and Part-of-Speech Tagging.	ICCPOL	2006	DBLP DOI BibTeX RDF	integration, smoothing, part-of-speech tagging, Chinese word segmentation
49	Mannes Poel, Luite Stegeman, Rieks op den Akker	A Support Vector Machine Approach to Dutch Part-of-Speech Tagging.	IDA	2007	DBLP DOI BibTeX RDF	Support Vector Machines, Part-of-Speech tagging
45	Muhua Zhu, Huizhen Wang, Jingbo Zhu	Label correspondence learning for part-of-speech annotation transformation.	CIKM	2009	DBLP DOI BibTeX RDF	annotation transformation, sequence labeling, natural language processing, part-of-speech tagging
45	Bekir Taner Dinçer, Bahar Karaoglan, Tarik Kisla	A Suffix Based Part-of-Speech Tagger for Turkish.	ITNG	2008	DBLP DOI BibTeX RDF	Closed vocabulary, Agglutinative languages, Information Retrieval, Part-Of-Speech Tagging
45	Reza Karimpour, Amineh Ghorbani, Azadeh Pishdad, Mitra Mohtarami, Abolfazl AleAhmad, Hadi Amiri, Farhad Oroumchian	Improving Persian Information Retrieval Systems Using Stemming and Part of Speech Tagging.	CLEF	2008	DBLP DOI BibTeX RDF	Persian information retrieval, Natural language, Part of speech
45	Young-Min Ahn, Seung-Eun Shin, Hee-Geun Park, Hyungsuk Ji, Young-Hoon Seo	A Korean Part-of-Speech Tagging System Using Resolution Rules for Individual Ambiguous Word.	International Conference on Computational Science (2)	2007	DBLP DOI BibTeX RDF	Resolution Rules, Tagging, Part-of-Speech
45	Julia S. Trushkina	Development of a Multilingual Parallel Corpus and a Part-of-Speech Tagger for Afrikaans.	Intelligent Information Processing	2006	DBLP DOI BibTeX RDF	induction of linguistic tools, South African languages, Afrikaans, Natural Language Processing, Part-of-Speech tagging, Parallel corpora
40	S. Lakshmana Pandian, T. V. Geetha	CRF Models for Tamil Part of Speech Tagging and Chunking.	ICCPOL	2009	DBLP DOI BibTeX RDF	Part Of Speech (POS) tagging, Language Models, Conditional Random Fields, Chunking
40	Felipe Sánchez-Martínez, Juan Antonio Pérez-Ortiz, Mikel L. Forcada	Using target-language information to train part-of-speech taggers for machine translation.	Mach. Transl.	2008	DBLP DOI BibTeX RDF	Rule-based machine translation, Hidden Markov models, Language modeling, Part-of-speech tagging
40	Mahdi Mohseni, Hasan Motalebi, Behrouz Minaei-Bidgoli, Mahmoud Shokrollahi-far	A Farsi part-of-speech tagger based on Markov model.	SAC	2008	DBLP DOI BibTeX RDF	Farsi language, tagset, Markov model, part-of-speech tagging
40	Dimitris Gavrilis, Evangelos Dermatas	Part-of-Speech Tagging in Molecular Biology Scientific Abstracts Using Morphological and Contextual Statistical Information.	SETN	2004	DBLP DOI BibTeX RDF	HMM, Natural Language Processing, Part-of-Speech Tagging
36	Jinsul Kim, Hyun-Woo Lee, Won Ryu, Seung Ho Han, Minsoo Hahn	Performance Analysis of Perceptual Speech Quality and Modules Design for Management over IP Network.	HCI (3)	2007	DBLP DOI BibTeX RDF	Speech Packet, QoS, VoIP, Noise Reduction, IP Network
35	Marcin Kuta, Michal Wrzeszcz, Pawel Chrzaszcz, Jacek Kitowski	Accuracy of Baseline and Complex Methods Applied to Morphosyntactic Tagging of Polish.	ICCS (1)	2008	DBLP DOI BibTeX RDF	natural language processing, part-of-speech tagging
35	Alexis Nasr, Alexandra Volanschi	Integrating a POS Tagger and a Chunker Implemented as Weighted Finite State Machines.	FSMNLP	2005	DBLP DOI BibTeX RDF	weighted finite state machines, chunking, Part-of-speech tagging
35	Patrick Ruch	Information retrieval and spelling correction: an inquiry into lexical disambiguation.	SAC	2002	DBLP DOI BibTeX RDF	information retrieval, statistical language model, part-of-speech tagging, spelling correction, string edit distance, lexical disambiguation
35	Héctor Jiménez, Guillermo Morales	Sepe: A POS Tagger for Spanish.	CICLing	2002	DBLP DOI BibTeX RDF	part-of-speech tagging, Spanish language
34	Javed Ahmed Mahar, Ghulam Qadir Memon	Rule Based Part of Speech Tagging of Sindhi Language.	ICSAP	2010	DBLP DOI BibTeX RDF	Sindhi, Tagging Rules, Morphology, Lexicon, Part of Speech
34	Guanglu Sun, Yibo Xue, Zhiming Xu, Fei Lang	Chinese Chunking Based on Coarse-Grained Part-of-Speech Features.	IALP	2009	DBLP DOI BibTeX RDF	coarse-grained features, propagated errors, chunking, part-of-speech
34	James Allan, Hema Raghavan	Using part-of-speech patterns to reduce query ambiguity.	SIGIR	2002	DBLP DOI BibTeX RDF	query ambiguity, part of speech, clarity
34	Yi-li Qian, Jia-heng Zheng	An Approach to Improving the Quality of Part-of-Speech Tagging of Chinese Text.	ITCC (2)	2004	DBLP DOI BibTeX RDF
30	Dimitris Spiliotopoulos, Georgios Petasis, Georgios Kouroupetroglou	A Framework for Language-Independent Analysis and Prosodic Feature Annotation of Text Corpora.	TSD	2008	DBLP DOI BibTeX RDF
29	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
29	Christos Bouras, Vassilis Tsogkas	Improving Text Summarization Using Noun Retrieval Techniques.	KES (2)	2008	DBLP DOI BibTeX RDF	Noun Retrieval, Text Categorization, Text Summarization, Part of Speech Tagging, Data Preprocessing, Focused Crawler
29	Jonathan M. Fishbein, Chris Eliasmith	Integrating Structure and Meaning: A New Method for Encoding Structure for Text Classification.	ECIR	2008	DBLP DOI BibTeX RDF	Holographic Reduced Representations, Random Indexing, Semantics, Text Classification, Syntax, Vector Space Model, Part of Speech Tagging
29	Daniel P. Lopresti	Optical character recognition errors and their effects on natural language processing.	AND	2008	DBLP DOI BibTeX RDF	performance evaluation, optical character recognition, tokenization, part-of-speech tagging, sentence boundary detection
29	James Mayfield, Paul McNamee, Christine D. Piatko, Claudia Pearce	Lattice-based tagging using support vector machines.	CIKM	2003	DBLP DOI BibTeX RDF	SVM-Lattice, support vector machines, tagging, named entity recognition, part of speech tagging
29	Abdel Belaïd	Recognition of table of contents for electronic library consulting.	Int. J. Document Anal. Recognit.	2001	DBLP DOI BibTeX RDF	Calliope project, Table of contents recognition, OCR combination, Digital library, Part-of-speech tagging
29	James R. Curran, Raymond K. Wong 0001	Formalization of Transformation-Based Learning.	ACSC	2000	DBLP DOI BibTeX RDF	Machine Learning, NLP, Part of Speech Tagging
28	Martín Ariel Domínguez, Gabriel G. Infante López	Searching for Part of Speech Tags That Improve Parsing Models.	GoTAL	2008	DBLP DOI BibTeX RDF
28	Manolis Maragoudakis, Todor Ganchev, Nikos Fakotakis	Bayesian Reinforcement for a Probabilistic Neural Net Part-of-Speech Tagger.	TSD	2004	DBLP DOI BibTeX RDF
28	Nikolaj Lindberg, Martin Eineborg	Improving Part of Speech Disambiguation Rules by Adding Linguistic Knowledge.	ILP	1999	DBLP DOI BibTeX RDF
24	Dagen Wang, Shrikanth S. Narayanan	An Acoustic Measure for Word Prominence in Spontaneous Speech.	IEEE Trans. Speech Audio Process.	2007	DBLP DOI BibTeX RDF
23	S. Lakshmana Pandian, T. V. Geetha	Semantic Role Based Tamil Sentence Generator.	IALP	2009	DBLP DOI BibTeX RDF	Conditional random field models, Machine Learning, Natural language Generation, chunking, Part of speech
23	Lior Rokach, Roni Romano, Oded Maimon	Negation recognition in medical narrative reports.	Inf. Retr.	2008	DBLP DOI BibTeX RDF	Narrative medical reports, Artificial intelligence, Text classification, Negation, Part-of-speech tagging
23	Mukundan Karthik, Mariappan Marikkannan, Arputharaj Kannan	An Intelligent System for Semantic Information Retrieval Information from Textual Web Documents.	IWCF	2008	DBLP DOI BibTeX RDF	SEMINRET algorithm, Part-Of-Speech (POS) tag Intelligent Information Retrieval, Information Extraction (IE), Text mining, Semantic relations, Resources Description Framework (RDF)
23	Mohammad Bahrani, Hossein Sameti, Nazila Hafezi, Saeedeh Momtazi	A New Word Clustering Method for Building N-Gram Language Models in Continuous Speech Recognition Systems.	IEA/AIE	2008	DBLP DOI BibTeX RDF	Class n-gram Models, Persian Text Corpus, Part Of Speech, Word Clustering, Continuous Speech Recognition
23	Dawn J. Lawrie, Henry Feild, David W. Binkley	Syntactic Identifier Conciseness and Consistency.	SCAM	2006	DBLP DOI BibTeX RDF	Identifier Quality, Part-of-speech
23	Daniel P. Lopresti	Performance evaluation for text processing of noisy inputs.	SAC	2005	DBLP DOI BibTeX RDF	performance evaluation, optical character recognition, tokenization, part-of-speech tagging, sentence boundary detection
23	Alexandros Ntoulas, Gerald Chao, Junghoo Cho	The infocious web search engine: improving web searching through linguistic analysis.	WWW (Special interest tracks and posters)	2005	DBLP DOI BibTeX RDF	linguistic analysis of web text, phrase identification, information retrieval, natural language processing, indexing, web searching, word sense disambiguation, crawling, web search engine, part-of-speech tagging, language analysis, concept extraction
23	Fatiha Sadat, Masatoshi Yoshikawa, Shunsuke Uemura	Learning bilingual translations from comparable corpora to cross-language information retrieval: hybrid statistics-based and linguistics-based approach.	IRAL	2003	DBLP BibTeX RDF	translation, cross-language information retrieval, disambiguation, part-of-speech, comparable corpora
23	Özlem Uzuner, Randall Davis	Content and expression-based copy recognition for intellectual property protection.	Digital Rights Management Workshop	2003	DBLP DOI BibTeX RDF	content and expression based copy recognition, copy recognition, distribution volume tracking, part-of-speech tagged features, surface parsing, semantic features, syntactic parsing
23	Fatiha Sadat, Masatoshi Yoshikawa, Shunsuke Uemura	Enhancing cross-language information retrieval by an automatic acquisition of bilingual terminology from comparable corpora.	SIGIR	2003	DBLP DOI BibTeX RDF	bilingual lexicon extraction, cross-language information retrieval, disambiguation, transliteration, part-of-speech, comparable corpora
23	Rattasit Sukhahuta, Dan J. Smith	Information extraction for Thai documents.	IRAL	2000	DBLP DOI BibTeX RDF	grammar parser, part-of-speech tagger, phrase structure, information extraction, word segmentation
23	Krzysztof Marasek, Ryszard Gubrynowicz	Multi-level Annotation in SpeeCon Polish Speech Database.	IMTCI	2004	DBLP DOI BibTeX RDF
22	Wei Zhao, Faxing Zhao, Wenhui Li	A New Method of the Automatically Marked Chinese Part of Speech Based on Gaussian Prior Smoothing Maximum Entropy Model.	FSKD (3)	2007	DBLP DOI BibTeX RDF
22	Guy De Pauw, Gilles-Maurice de Schryver, Peter Waiganjo Wagacha	Data-Driven Part-of-Speech Tagging of Kiswahili.	TSD	2006	DBLP DOI BibTeX RDF
22	Reinhard Rapp	Part-of-Speech Discovery by Clustering Contextual Features.	GfKl	2006	DBLP DOI BibTeX RDF
22	Garnett Carl Wilson, Malcolm I. Heywood	Use of a genetic algorithm in brill's transformation-based part-of-speech tagger.	GECCO	2005	DBLP DOI BibTeX RDF	brill tagger, genetic algorithm, natural language processing
22	Gaël Dias, Spela Vintar	Unsupervised Learning of Multiword Units from Part-of-Speech Tagged Corpora: Does Quantity Mean Quality?.	EPIA	2005	DBLP DOI BibTeX RDF
22	Enrique Sánchez Villamil, Mikel L. Forcada, Rafael C. Carrasco	Unsupervised Training of a Finite-State Sliding-Window Part-of-Speech Tagger.	EsTAL	2004	DBLP DOI BibTeX RDF
22	Veselka Dojchinova, Stoyan Mihov	High Performance Part-of-Speech Tagging of Bulgarian.	AIMSA	2004	DBLP DOI BibTeX RDF
22	Karel Oliva, Pavel Kveton, Roman Ondruska	The Computational Complexity of Rule-Based Part-of-Speech Tagging.	TSD	2003	DBLP DOI BibTeX RDF
20	Jerzy W. Grzymala-Busse, L. John Old	A Machine Learning Experiment to Determine Part of Speech from Word-Endings.	ISMIS	1997	DBLP DOI BibTeX RDF	Roget's Thesaurus, classification of examples, system LERS, rough set theory, rule induction, Learning and knowledge discovery
19	Özlem Öztürk, Tolga Çiloglu	Segmental Duration Modelling in Turkish.	TSD	2006	DBLP DOI BibTeX RDF
19	Rajesh Chandrasekaran	Using language structure for adaptive multimodal language acquisition.	ICMI	2004	DBLP DOI BibTeX RDF	adaptive dialogue systems, computer language learning, language structure, language acquisition
17	Stanislaw Drozdz, Jaroslaw Kwapien, Adam Orczyk	Approaching the Linguistic Complexity.	Complex (1)	2009	DBLP DOI BibTeX RDF	Zipf law, word classes, Complexity, natural language
17	Chenda Nou, Wataru Kameyama	Hybrid Approach for Khmer Unknown Word POS Guessing.	IRI	2007	DBLP DOI BibTeX RDF
17	Deepak P 0001, Delip Rao, Deepak Khemani	Building Clusters of Related Words: An Unsupervised Approach.	PRICAI	2006	DBLP DOI BibTeX RDF
17	Weijun Chen, Fuzong Lin, Jianmin Li 0001, Bo Zhang 0010	A Tree-Based Model of Prosodic Phrasing for Chinese Text-to-Speech Systems.	IEEE Pacific Rim Conference on Multimedia	2001	DBLP DOI BibTeX RDF
16	Christina Lioma, Roi Blanco	Part of Speech Based Term Weighting for Information Retrieval.	ECIR	2009	DBLP DOI BibTeX RDF
16	Jerome R. Bellegarda	A novel approach to part-of-speech tagging based on latent analogy.	ICASSP	2008	DBLP DOI BibTeX RDF
16	Cícero Nogueira dos Santos, Ruy Luiz Milidiú, Raúl P. Rentería	Portuguese Part-of-Speech Tagging Using Entropy Guided Transformation Learning.	PROPOR	2008	DBLP DOI BibTeX RDF
16	Guillem Gascó i Mora, Joan-Andreu Sánchez	Part-of-Speech Tagging Based on Machine Translation Techniques.	IbPRIA (1)	2007	DBLP DOI BibTeX RDF
16	Mi-young Kang, Sung-Won Jung, Kyung-soon Park, Hyuk-Chul Kwon	Part-of-Speech Tagging Using Word Probability Based on Category Patterns.	CICLing	2007	DBLP DOI BibTeX RDF
16	Vítor Rocio, Joaquim F. Silva, José Gabriel Lopes	Detection of Strange and Wrong Automatic Part-of-Speech Tagging.	EPIA Workshops	2007	DBLP DOI BibTeX RDF
16	Shen Huang, Jian-Tao Sun, Xuanhui Wang, Hua-Jun Zeng, Zheng Chen 0001	Subjectivity Categorization of Weblog with Part-of-Speech Based Smoothing.	ICDM	2006	DBLP DOI BibTeX RDF
16	Gabriel G. Infante López, Maarten de Rijke	Sequences of Part of Speech Tags vs. Sequences of Phrase Labels: How Do They Help in Parsing?	CICLing	2006	DBLP DOI BibTeX RDF
16	Teresa Gonçalves 0001, Cassiana Fagundes da Silva, Paulo Quaresma, Renata Vieira	Analysing Part-of-Speech for Portuguese Text Classification.	CICLing	2006	DBLP DOI BibTeX RDF
16	Felipe Sánchez-Martínez, Juan Antonio Pérez-Ortiz, Mikel L. Forcada	Speeding Up Target-Language Driven Part-of-Speech Tagger Training for Machine Translation.	MICAI	2006	DBLP DOI BibTeX RDF
16	Fábio N. Kepler, Marcelo Finger	Comparing Two Markov Methods for Part-of-Speech Tagging of Portuguese.	IBERAMIA-SBIA	2006	DBLP DOI BibTeX RDF
16	Fábio Natanael Kepler, Marcelo Finger	Part-of-Speech Tagging of Portuguese Based on Variable Length Markov Chains.	PROPOR	2006	DBLP DOI BibTeX RDF
16	Indra Budi, Stéphane Bressan, Gatot Wahyudi, Zainal Arifin Hasibuan, Bobby A. A. Nazief	Named Entity Recognition for the Indonesian Language: Combining Contextual, Morphological and Part-of-Speech Features into a Knowledge Engineering Approach.	Discovery Science	2005	DBLP DOI BibTeX RDF
16	Ahmed Amrani, Mathieu Roche, Yves Kodratoff, Oriane Matte-Tailliez	Inductive Improvement of Part-of-Speech Tagging and Its Effect on a Terminology of Molecular Biology.	Canadian AI	2005	DBLP DOI BibTeX RDF
16	Yoshimasa Tsuruoka, Yuka Tateishi, Jin-Dong Kim, Tomoko Ohta, John McNaught, Sophia Ananiadou, Jun'ichi Tsujii	Developing a Robust Part-of-Speech Tagger for Biomedical Text.	Panhellenic Conference on Informatics	2005	DBLP DOI BibTeX RDF
16	Reinhard Rapp	Part-of-Speech Induction by Singular Value Decomposition and Hierarchical Clustering.	GfKl	2005	DBLP DOI BibTeX RDF
16	Stéphane Bressan, Lily Suryana Indradjaja	Part-of-Speech Tagging Without Training.	INTELLCOMM	2004	DBLP DOI BibTeX RDF
16	Felipe Sánchez-Martínez, Juan Antonio Pérez-Ortiz, Mikel L. Forcada	Exploring the Use of Target-Language Information to Train the Part-of-Speech Tagger of Machine Translation Systems.	EsTAL	2004	DBLP DOI BibTeX RDF
16	Bekir Taner Dinçer, Bahar Karaoglan	The Effect of Part-of-Speech Tagging on IR Performance for Turkish.	ISCIS	2004	DBLP DOI BibTeX RDF
16	Rada Mihalcea	Performance Analysis of a Part of Speech Tagging Task.	CICLing	2003	DBLP DOI BibTeX RDF
16	Xiaofan Lin	Impact of imperfect OCR on part-of-speech tagging.	ICDAR	2003	DBLP DOI BibTeX RDF
16	Jorge Graña, Francisco-Mario Barcala, Jesús Vilares Ferro	Formal Methods of Tokenization for Part-of-Speech Tagging.	CICLing	2002	DBLP DOI BibTeX RDF
16	Lourdes Araujo	Part-of-Speech Tagging with Evolutionary Algorithms.	CICLing	2002	DBLP DOI BibTeX RDF
16	Liang Huang 0001, Yinan Peng, Huan Wang, Zhenyu Wu	Statistical Part-of-Speech Tagging for Classical Chinese.	TSD	2002	DBLP DOI BibTeX RDF
16	Patrick Ruch, Robert H. Baud, Antoine Geissbühler, Christian Lovis, Anne-Marie Rassinoux, Alain Rivière	Using Part-of-Speech and Word-Sense Disambiguation for Boosting String-Edit Distance Spelling Correction.	AIME	2001	DBLP DOI BibTeX RDF
16	Torbjörn Lager, Joakim Nivre	Part of Speech Tagging from a Logical Point of View.	LACL	2001	DBLP DOI BibTeX RDF
16	Abdel Belaïd, Laurent Pierron, N. Valverde	Part-of-Speech Tagging for Table of Contents Recognition.	ICPR	2000	DBLP DOI BibTeX RDF
16	André Kempe	Part-of-Speech Tagging with Two Sequential Transducers.	CIAA	2000	DBLP DOI BibTeX RDF
16	Alneu de Andrade Lopes, Alípio Jorge	Combining Rule-Based and Case-Based Learning for Iterative Part-of-Speech Tagging.	EWCBR	2000	DBLP DOI BibTeX RDF
16	Martin Eineborg, Nikolaj Lindberg	ILP in Part-of-Speech Tagging - An Overview.	Learning Language in Logic	1999	DBLP DOI BibTeX RDF
16	Alípio Jorge, Alneu de Andrade Lopes	Iterative Part-of-Speech Tagging.	Learning Language in Logic	1999	DBLP DOI BibTeX RDF
16	Tamás Horváth 0001, Zoltán Alexin, Tibor Gyimóthy, Stefan Wrobel	Application of Different Learning Methods to Hungarian Part-of-Speech Tagging.	ILP	1999	DBLP DOI BibTeX RDF
16	Lluís Màrquez, Horacio Rodríguez	Part-of-Speech Tagging Using Decision Trees.	ECML	1998	DBLP DOI BibTeX RDF
15	Guohong Fu, Min Zhang 0005, Guodong Zhou, Kang-Kwong Luke	A Unified Framework for Text Analysis in Chinese TTS.	ISCSLP	2006	DBLP DOI BibTeX RDF	Chinese TTS, grapheme-to-phoneme conversion, text normalization, text analysis, lexical analysis
15	Ahmed, Raju S. Bapi, Chandrasekhar V. S. Pammi, M. Krishna Prasad	Application of Multilayer Perceptron Network for Tagging Parts-of-Speech.	Language Engineering Conference	2002	DBLP DOI BibTeX RDF
15	Kshitij Gupta, Chaiyasait Prachaseree, Thi-Nga Ho, Kyaw Zin Tun, Jia Xin Koh, Ying Ying Tan, Eng Siong Chng, Chalapathi GSS	Singaporean Conversational English-Malay Code-Switching Speech: An Analysis Based on Code-switching Points and Part -of-Speech.	IALP	2023	DBLP DOI BibTeX RDF
15	Ria Ambrocio Sagum, Kier Bryan A. Lopez, Steven John D. Bonzol, Wendell Vryan L. Pidlaoan	TAGSYNTA: Tagalog Speech Synthesizer using Part of Speech in Prosody Analyzation.	NLPIR	2021	DBLP DOI BibTeX RDF
15	Laura Pérez-Mayos, Mireia Farrús, Jordi Adell	Part-of-Speech and Prosody-based Approaches for Robot Speech and Gesture Synchronization.	J. Intell. Robotic Syst.	2020	DBLP DOI BibTeX RDF
15	Giuseppe Gambino, Roberto Pirrone	CHILab @ HaSpeeDe 2: Enhancing Hate Speech Detection with Part-of-Speech Tagging (short paper).	EVALITA	2020	DBLP BibTeX RDF
15	Muhammad Okky Ibrohim, Muhammad Akbar Setiadi, Indra Budi	Identification of hate speech and abusive language on indonesian Twitter using the Word2vec, part of speech and emoji features.	AISS	2019	DBLP DOI BibTeX RDF
15	Maël Pouget, Olha Nahorna, Thomas Hueber, Gérard Bailly	Adaptive Latency for Part-of-Speech Tagging in Incremental Text-to-Speech Synthesis.	INTERSPEECH	2016	DBLP DOI BibTeX RDF