Báo cáo khoa học: "A Probabilistic Answer Type Model" docx

... then the expected answer type is Person. The number of answer types as well as the num- ber of rules can vary a great deal. For example, (Hermjakob, 2001) used 276 rules for 122 answer types. Greenwood ... a miscellaneous answer type. 1 Introduction Given a question, people are usually able to form an expectation about the type of the answer, even if they do not know the actual...

Ngày tải lên: 31/03/2014, 20:20

... the depen- dency relation or the junction operation. Blocks can be of two types: standard and junction blocks. Both types may contain any sequence of func- tional words. Standard blocks (depicted ... WFM) specified in equations (2-4) and explained in the main text. 3 A probabilistic Model for TDS This section describes the probabilistic generative model which was implemented in order to di...

Ngày tải lên: 20/02/2014, 04:20

... A PROBABILISTIC APPROACH TO GRAMMATICAL ANALYSIS OF WRITT!N ENGLISH BY COMPUTER. Andrew David Beale, ... corpus. So far, sample sentences have been automatically assigned phrase and clause tags using a probabilistic system similar to word tagging. It is hoped that the entire corpus will eventually ... We have recently devised an interactive version of the word tagging system so t...

Ngày tải lên: 22/02/2014, 09:20

... A PROBABILISTIC PARSER Roger Garside and Fanny Leech Unit for Computer Research on the English Language ... analysis is therefore to deduce from the sequence of tags a tentative sequence of markings for the type and boundaries of the constituents. Since the beginnings of constituents tend to be marked, ... treebank of manually parsed sentences can now be used to extract information...

Ngày tải lên: 22/02/2014, 09:20

... the probability as ))(()|( rtypePqrP ! , (10) where type( r) represents the way r connecting query and expert. P (type( r)) represents the reliabil- ity of relation type of r. Following the Bayes ... (corre- sponding to P (type( t,q)) in Equation (12) ) for the given query q as t tt t df dfMIN qttypeWQ )( )),(( '' = , (13) where t means the discovered topic from a docu-...

Ngày tải lên: 08/03/2014, 01:20

... rules of the type "A , B C a, rather than bottom-up reduction and rules of the sort "B C + A ~ used by the parser. 187 MORPA's grammar comprises three different types of production ... information is based on a 44-million-word corpus. We collected from this database both type and token frequencies: type frequencies indicate how often a production rule occurs in th...

Ngày tải lên: 18/03/2014, 02:20

... un- derstood to correspond to entities (types, not men- tion tokens) and columns are fields, each associated with an attribute or a part of it. Our approach is based on a probabilistic graphical model that ... mentions of type person against a regular expression to recognize entity attributes from a fixed set of titles and suffixes, and the first, middle and last names. We treat words in ment...

Ngày tải lên: 23/03/2014, 14:20

... wisely integrate indications for entailment, probabilistic methods have the advantage of be- ing extendable and enabling the utilization of well- founded probabilistic methods such as the EM algo- rithm. We ... certain model- ing aspects that need to be improved. 2 Probabilistic Model Under the lexical entailment scope, our modeling goal is obtaining a probabilistic score for the like...

Ngày tải lên: 30/03/2014, 21:20

... 720–727, Prague, Czech Republic, June 2007. c 2007 Association for Computational Linguistics A Probabilistic Approach to Syntax-based Reordering for Statistical Machine Translation Chi-Ho Li, ... China mhli@insun.hit.edu.cn guanyi@insun.hit.edu.cn Abstract Inspired by previous preprocessing ap- proaches to SMT, this paper proposes a novel, probabilistic approach to reordering which combi...

Ngày tải lên: 31/03/2014, 01:20

... models in as- suming a very general kind of linguistic knowl- edge and a probabilistic grammar. Specifically, we use the probabilistic Combinatory Categorial Grammar (CCG) framework, and assume ... natural language. The probabilistic parsing model introduced in Sec- tion 3 is used to choose the best parse from the overgenerated set. 5 Training 5.1 Parameter Estimation The probabilistic...

Ngày tải lên: 31/03/2014, 20:20