Tài liệu Báo cáo khoa học: "Hierarchical Text Classiﬁcation with Latent Concepts" doc

... classification with latent concepts. Experimental results showthat the performance of our algorithm is com-petitive with the recently proposed hierarchi-cal classification algorithms.1 Introduction Text ... Oregon, June 19-24, 2011.c2011 Association for Computational LinguisticsHierarchical Text Classification with Latent ConceptsXipeng Qiu, Xuanjing Huang, Zhao Liu and Jinlong ZhouSchool of Computer ... several latent concepts andits subclasses share information with these d-ifferent concepts respectively. Then, we pro-pose a variant Passive-Aggressive (PA) algo-rithm for hierarchical text classification...

Tài liệu Báo cáo khoa học: "User Edits Classiﬁcation Using Document Revision Histories" pptx

... Recognizing textual entailment with LCCs GROUNDHOG system. In Proceedingsof the Second PASCAL Challenges Workshop.T. Joachims. 1998. Text categorization with supportvector machines: Learning with ... featureslook at n-gram based sentence probabilities be-fore and after the edit, with and without normal-ization with respect to sentence lengths. The ratioof the two probabilities,ˆPratio(pre, ... types based on manual examina-tion of 50 fluency edit misclassifications and 50factual edit misclassifications.leads to a small decrease in classification accu-racy, namely 86.68% instead of 87.14%...

Tài liệu Báo cáo khoa học: "Hierarchical Chunk-to-String Translation" ppt

... syntactic constituents ofsubphrases, so it can directly learn synchronouscontext-free grammars (SCFG) from a parallel text without relying on any linguistic annotations or as-sumptions, which makes ... methods work with the original SCFGdefined by hierarchical phrase-based model and uselinguistic knowledge to assist translation. Instead,our model works under the new defined SCFG with chunks.Besides, ... We filtered the features whose frequency waslower than 3 and substituted ‘‘ and ’’ with ˝ tokeep consistent with translation data. We used L2algorithm to train CRF.Data for Translation We used...

Tài liệu Báo cáo khoa học: "Identifying Text Polarity Using Random Walks" pptx

... from a word with unknown polarity i , it moves to a node j with probability Pijafter the first step. The walk con-tinues until the surfer hits a word with a knownpolarity. Seed words with known ... phrases are identified without consider-ing their context (Wiebe, 2000; Hatzivassiloglouand Wiebe, 2000; Banea et al., 2008). In the sec-ond category, the context of subjective text is used(Riloff ... (2005; 2006) use a textual representation ofwords by collating all the glosses of the word asfound in some dictionary. Then, a binary text clas-sifier is trained using the textual representation...

Tài liệu Báo cáo khoa học: "A Text Input Front-end Processor as an Information Access Platform" doc

... language text, this tool is also implemented as a front-end processor and can be combined with a wide variety of applications. A morphological analyzer automatically extracts key words from text ... books or documents relevant to the text, including various kinds of dictionaries and reference works. The tools used for accessing relevant information, such as CD-ROM dictionaries, text databases, ... Pen" automatically retrieves and displays English words equivalent to the input Japanese texts without explicit user command because users always utilize the English equivalents in English...

Tài liệu Báo cáo khoa học: "Untangling Text Data Mining" ppt

... parts of the text manipulation process and to integrate un- derlying computationally-driven text analysis with human-guided decision making within exploratory data analysis over text. References ... has been little work in text data mining to date, and most people who have talked about it have either conflated it with information access or have not made use of text directly to discover ... consider to be reM text data mining efforts and briefly outline recent ideas about how to pursue exploratory data analysis over text. 1 Introduction The nascent field of text data mining (TDM)...

Tài liệu Báo cáo khoa học: "BASED TEXT SEGMENTATION ON SIMILARITY BETWEEN WORDS" pdf

... the text. Recognizing the structure of text is an essential task in text understanding, especially in resolving anaphora and ellipsis. One of the constituents of the text structure is a text ... similarity of words in a sequence of text. The similarity of words, which represents their cohesiveness, is computed using a semantic network. Comparison with the text segments marked by a number ... This paper proposes a new indicator of text structure, called the lexical cohesion profile (LCP), which locates segment boundaries in a text. A text segment is a coherent scene; the words...

Tài liệu Báo cáo khoa học: "PLANNING TEXT FOR ADVISORY DIALOGUES" docx

... this new text planner and show how it records the information needed to engage in a dialogue. Finally, a brief comparison with other approaches to text generation is presented. TEXT PLANNER ... participate in a dialogue with its users, a generation system must be capable of reasoning about its past utterances. The text plans built by our text planner provide a generator with the information ... from the user may be helpful in incremental text planning. CONCLUSIONS In this paper, we have presented a text planner that builds a detailed text plan, contain- ing the intentional, attentional,...

Tài liệu Báo cáo khoa học: "A text-based search interface for Multimedia Dialectics" ppt

... interact with one another was indicated (Whittaker and Walker,1991). Recently, such theoretical framework hasbeen developed and used for annotating a corpusof audiovisual documents with the ... simple inter-face is provided that allows the user to submita text query, with no other speciﬁcations. Theresults consist of a hit list with thumbnails ofthe video-clips related to the query and ... modelling multimedia di-alectics. The tool is a text- based search in-terface that facilitates the exploration of acorpus of audiovisual ﬁles, annotated with the COSMOROE relations.1 IntroductionOnline...

Tài liệu Báo cáo khoa học: "Representing Text Chunks" pdf

... In TBL, rules with different context information are used successively for solving different prob- lems. We will use the same context information for all data. The optimal context size will ... comparing the results of different context sizes on the training data. Here we will perform four steps. We will start with testing dif- fhrent context sizes of words with their part-of- speech tag. ... tag context sizes for the seven representation formats using 5-fold cross-validation on section 15 of the WSJ corpus. with explicit open bracket information preferred larger left context and...

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