base noun phrase learning

... Pierce (1998) use rule-based systems. 2 Learning Base Noun Phrases by Machine We used the base noun phrase system of Ramshaw and Marcus (R&M) as the machine learning system with which ... frequency noun phrases, we observed how the accuracy of noun phrase annotation of both hu- man and machine derived rules is affected by the frequency of occurrence of the noun phrases in ... generalize across a large number of these low-frequency noun phrases, the only way noun phrases in the tail of the distribution can be learned is by learning low-count rules: in other words, rules...

Ngày tải lên: 20/02/2014, 19:20

Ngày tải lên: 31/03/2014, 03:20

Ngày tải lên: 12/12/2013, 20:22

... closely related to that of linguistic head nouns and modi- fiers for noun phrases. In many cases, the IHs of noun phrase queries are exactly the head nouns in the linguistic sense. Exceptions mostly ... identifying head nouns. In identifying IHs in noun phrase queries, how- ever, direct syntactic analysis is unlikely to be as effective. This is because syntactic structures are in general less pronounced ... tried extending the features based on word IDs to those based on n-gram IDs, where n = 1, 2, 3. This greatly increased the number of lexical features but did not improve learning per- formance, most...

Ngày tải lên: 20/02/2014, 04:20

... Institute of Technology, USA. Wee Meng Soon, Hwee Tou Ng, and Chung Yong Lim. 1999. Corpus-based learning for noun phrase coref- erence resolution. In Proceedings of the 1999 Joint SIGDAT Conference ... amount of work on discourse- based anaphora resolution in the 1970s and 1980s (see Hirst (1981)), learning- based resolvers have only exploited shallow discourse-based fea- tures, which primarily ... referentially ac- cessible to an anaphoric pronoun in his heuristic pronoun resolvers. It would be interesting to in- corporate this idea into a learning- based resolver. There are also features that...

Ngày tải lên: 07/03/2014, 22:20

... Complex noun sequences. Semantic patterns in complex noun phrases fall into two types: part names and other noun phrases. Names for pieces of equipment often con- tain complex noun sequences, ... more noun modifiers of nouns constructions (Noun + Noun construc- tions) in the equipment failure messages than there were in the medical records, and more prepositional phrase modifiers of noun ... In other noun phrases, i.e. those that are not part names, the head nouns can have other semantic categories. For example, looking back at the sentences in (3), the head noun of a noun sequence...

Ngày tải lên: 08/03/2014, 18:20

... (1) noun prep noun adj noun prep noun prep det noun noun adj noun noun prep noun noun noun prep noun prep noun noun noun adj noun noun noun noun noun prep noun noun prep noun prep noun ... head noun1 of the noun sub-group noun1 prep noun2 , or it attaches noun2 , constituting the noun sub-group (noun2 adj); the competing noun sub-groups (noun1 prep noun2 ) and (noun2 ... D'EQUILIBRAGE # EQU1LIBRAGE MANUEL (3) noun1 prep noun2 prep noun3 parsing rule [c] noun1 prep noun2 prep noun3 # noun1 prep noun2 # noun2 prep noun3 example of parse ALARME DE SYNTHESE...

Ngày tải lên: 09/03/2014, 01:20

... of noun phrases: one is noun- headed phrases; the other one is pronoun-headed phrase. Pronoun-headed phrases play different functions as the same as noun- headed phrases do. In addition, pronoun-headed ... is that pronoun-headed phrases in subject function are more frequent than noun- headed phrases in spoken, but pronoun-headed phrases in object function is less frequent than noun- headed phrases in ... English. On the other hand, noun- 4 EXAMPLE 1.2 Background 1.2.1 The noun phrase According to Bakken (2006), the head of a noun phrase is a noun or a pronoun. If the head is a noun, it may combine with...

Ngày tải lên: 10/03/2014, 05:20

... head nouns from base noun phrases (NPB) (i.e. noun phrases that do not dominate other noun phrases) because the underspecified annotation of NPBs in the WSJ means that the conjoined head nouns ... extracted all noun pairs from the BNC which occurred in a pattern of the form: noun cc noun 1 , as well as lists of any number of nouns separated by commas and ending in cc noun. Each noun in the ... tendency for con- joined nouns to be semantically similar has also been exploited for coordinate noun phrase disam- biguation by Resnik (1999) who employed a mea- sure of similarity based on WordNet...

Ngày tải lên: 17/03/2014, 04:20

... [adjective, noun] as a lexical atom than for the pair [noun, noun] : a noun- noun pair is much more likely to be a lexical atom than an adjective -noun one. The general process of phrase generation ... simple, yet robust and efficient noun- phrase analy- sis techniques to enhance phrase- based IR. In par- ticular, we explored an extension of the ~phrase- based indexing in the CLARIT TM system ... from complex noun phrases exploiting both corpus- statistics and linguistic heuristics. Using such sub- compounds rather than whole noun phrases as in- dexing terms helps a phrase- based IR system...

Ngày tải lên: 17/03/2014, 09:20

Ngày tải lên: 20/03/2014, 22:20

... noun phrases (2) Generalization by noun phrases MT output : NP1 NP2 NP3 Reference : NP NP3 NP1 NP2 Figure 3: Example of generalization by noun phrases. Figure 3 presents three corresponding noun phrases ... MT outputs using noun- phrase chunking. Conse- quently, the system obtains scores using the correctly matched words and phrase- level in- formation based on the corresponding noun phrases. Experimental ... γ 2 P wd multi (8) 2.3 Phrase- level Score The system calculates the phrase- level score using the noun phrases obtained by chunking. First, the system extracts only noun phrases from sentences....

Ngày tải lên: 23/03/2014, 16:20

... labelling noun phrases in natural language text. The input to this task is free text with part-of-speech tags. The output is the same text with brackets around base noun phrases. A base noun phrase ... English base- NPs is any noun phrase that does not contain another noun phrase, with possessives treated as a special case, viewing the possessive marker as the first word of a new base- NP ... Abstract We present a method for Noun Phrase chunking in Hebrew. We show that the traditional definition of base- NPs as non- recursive noun phrases does not apply in Hebrew, and propose...

Ngày tải lên: 23/03/2014, 18:20

... Brunstein. 2005. BBN pronoun coreference and entity type corpus. Technical report, Lin- guistic Data Consortium. 247 2 Motivation Many approaches to identifying base noun phrases have been explored ... dependency 1409 (1315) 1479 95.27 (88.91) By noun phrase 562 (489) 626 89.78 (78.12) By dependency, only annotated N Ps 578 (543) 627 92.19 (86.60) By noun phrase, only annotated N Ps 186 (162) 229 ... Australia dvadas1, james @it.usyd.edu.au Abstract The Penn Treebank does not annotate within base noun phrases (NPs), commit- ting only to flat structures that ignore the complexity of English NPs....

Ngày tải lên: 23/03/2014, 18:20

Ngày tải lên: 23/03/2014, 19:20

Ngày tải lên: 30/03/2014, 21:20

Ngày tải lên: 30/03/2014, 23:20

Ngày tải lên: 30/03/2014, 23:20

Ngày tải lên: 31/03/2014, 00:20

Ngày tải lên: 31/03/2014, 01:20