Báo cáo khoa học: "Using Mutual Information to Resolve Query Translation Ambiguities and Query Term Weighting" doc

... element u and a feature w co-occur, n and m respectively denote the total number of lexical elements and the total number of features, and N =  n i=1  m j=1 c(i, j). Pointwise mutual information ... automatic method to create a thesaurus that is sensitive to the sentiment of words expressed in different domains. • We describe a method to use the created the- saurus to ex...

Ngày tải lên: 20/02/2014, 04:20

... Consonant expands to any consonant and Vowel expands to any vowel. This gram- mar defines a Word to consist of up to three Syl- lables, where each Syllable consists of an Onset and a Rhyme and a Rhyme ... adaptor grammar of Figure 7. (Only adapted non-root nonterminals are shown in the parse). which expands to non-word-initial onsets, and be- tween CodaF, which expands to w...

Ngày tải lên: 20/02/2014, 09:20

... shi(4) chang(3) † , and both represent locations. The sentence “經理要我構買一部計算機” also con- † We use Arabic digits to denote the four tones in Mandarin. tains an error, and we need to replace “構買” ... that provides information about pronuncia- tions of characters and when we ignore special pat- terns for tone sandhi in Chinese (Chen, 2000). In contrast, it is relat...

Ngày tải lên: 20/02/2014, 09:20

... skilled human translators is to provide the oral translation of a given source text and then to post-edit the recognized text. In the post-editing step, a prediction engine helps to decrease the amount ... statis- tical machine translation system for the English to German automatic translation. The system in- cludes the following models: an n-gram language model, a phrase tran...

Ngày tải lên: 20/02/2014, 12:20

... proceeding, a note on terminology is in order. I use the term detection (of empty categories) for the insertion of a labeled empty category into the tree (and/ or string), and the term resolution ... iterate over nodes from top down 2 for each node X 3 try to insert NP* in X 4 try to insert 0 in X 5 try to insert WHNP 0 or WHADVP 0 in X 6 try to insert *U* in X 7 try...

Ngày tải lên: 20/02/2014, 16:20

... using hand-bracketed parses to examine both the inter- nal and external performance of a grammar checker. The internal performance refers to the behavior of the underlying system i.e, the toke- ... a more complex approach to evaluat- ing the performance of the system's ability to detect errors. Here, we need to look at both the 1. We use the term critique to repres...

Ngày tải lên: 20/02/2014, 21:20

... language package adapted to the Cast3LB data. Prior to parsing, we perform one of the tree transforma- tions described by Cowan and Collins (2005), i.e. we add a CP and SBAR nodes to subordinate and relative ... context means greater susceptibility to parse errors. Another factor to consider is the fact that we trained and adjusted parameters on gold- standard trees, and t...

Ngày tải lên: 08/03/2014, 02:21

... example-based machine translation, statistical machine translation, but also other applications such as cross-lingual information retrieval. Since it is a hard and time-consuming task to hand-align bilingual ... algorithm to fa- vor a link e.g. between oil and et over a link between oil and p ´ etrole. In particular, word variations can be due to in- flectional morphology (e.g....

Ngày tải lên: 08/03/2014, 07:20

... of this parser, and which may work on a different corpus. 6.1 Lappin and Leass We choose to re-implement a non-probabilistic algorithm due to Lappin and Leass (1994), 295 Factor Weight Sentence ... al's GR evaluation method to compare the Collins model 1 and model 2, and Charniak parsers. An initial evaluation is provided by compar- ing the extracted GRs to a gold sta...

Ngày tải lên: 08/03/2014, 21:20

... English sentences and also the automatically generated query training set. The simplest way to match query tokens to snip- pet tokens is to allow a query token to match any snippet token. This can ... we first apply the baseline tagger to the query and all the snippets. We match any query terms in these snippets, and copy over the POS tag to the matching query te...

Ngày tải lên: 16/03/2014, 20:20