Báo cáo khoa học: "Adding Noun Phrase Structure to the Penn Treebank" ppt

... to supplyan NP as the answer to a factoid question, often us-ing a parser to identify candidate NPs to return to the user. If the parser never generates the correctsub-NP structure, then the ... Forceis given ORG tags, the tool suggests that they bebracketed together ﬁrst. Other suggestions comefrom previous bracketings of the same words, whichhelps to keep the annotator consistent.Two ... word noun sequencesfrom all the ambiguous NPs. If the last three chil-dren are nouns, then they became an example in ourdata set. If there is a NML node containing the ﬁrsttwo nouns then...

Báo cáo khoa học: "Parsing Noun Phrase Structure with CCG" potx

... applying these to CCGbank NP structures ratherthan the Penn Treebank, the POS tag based heuristicsare sufﬁcient to determine heads accurately.337Finally, we assign supertags to the new structure. We ... for the child nodes, depending onwhether neither, the left, the right or both nodes span the entire NE. As an example, if the Air Forceconstituent were being joined with contract, then the ... between the heads of the left and right children. These dependencies arenever long-range, and therefore easy to deal with.We may also need to change dependencies reachingfrom inside to outside the...

Báo cáo khoa học: "Supervised Noun Phrase Coreference Research: The First Fifteen Years" pptx

... 2009. Conundrums in noun phrase coreference resolution: Making sense of the state-of -the- art. In Proceedings of the Joint Conference of the 47th Annual Meeting of the ACL and the 4th In-ternational ... Speciﬁcally, based on the corefer-ence decisions it has made in the ﬁrst i− 1 levels of the tree, the algorithm determines at the ith levelwhether the ith NP should start a new cluster, or to which preceding ... problem with the mention-pairmodel, it does not address the other problem: fail-ure to identify the most probable candidate an-tecedent. Ranking models, on the other hand, al-low us to determine...

Báo cáo khoa học: "Learning Noun Phrase Anaphoricity to Improve Coreference Resolution: Issues in Representation and Optimization" ppt

... of the overall performanceof the coreference system. On the other hand, if the model is too conservative, then only a small fractionof the truly non-anaphoric NPs will be identiﬁed,and so the ... sets demonstrate the ef-fectiveness of our approach.1 Introduction Noun phrase coreference resolution, the task of de-termining which noun phrases (NPs) in a text refer to the same real-world ... 14853-7501yung@cs.cornell.eduAbstractKnowledge of the anaphoricity of a noun phrase might be proﬁtably exploited by a coreference sys-tem to bypass the resolution of non-anaphoric noun phrases. Perhaps surprisingly, recent attempts to incorporate...

Báo cáo khoa học: "Genre distinctions for Discourse in the Penn TreeBank" pot

... each other ina variety of ways, including their topic, the read-ing level of their intended audience, and their in-tended purpose (eg, to instruct, to inform, to ex-press an opinion, to summarize, ... There is no one “right set”.3 Genre in the Penn TreeBankAlthough the ﬁles in the Penn TreeBank (PTB)lack any classiﬁcatory meta-data, leading the PTB to be treated as a single homogeneous collectionof ... meta-data in the PTB ﬁles1, Ilooked at line-level patterns in the 2159 ﬁles thatmake up the Penn Discourse TreeBank subset of the PTB, and then manually conﬁrmed the texttypes I found.2 The resulting...

Báo cáo khoa học: "Coordinate Noun Phrase Disambiguation in a Generative Parsing Model" doc

... model: the gold tree is a noun phrase which endswith the sequence CC/non-nominal modiﬁer /noun; the gold tree is a structured coordinate noun phrase where each word in the noun phrase is a noun. 9Callthese ... and the head of the phrase is (usu-ally) the rightmost noun in the phrase. Thus, whenn2 is immediately followed by another noun the de-fault is to assume nominal modiﬁer coordination and the ... head rules stay the same. The modiﬁcation wemake to the head rules for NPBs is as follows: whenn2 is not immediately followed by a noun then the noun chosen to head the entire phrase is n1.6...

Báo cáo khoa học: "REVISED GENERALIZED PHRASE STRUCTURE GRAMMAR" potx

... (PP [to] ), VP[INF,AGRI] (11) The absence of a controlling category allows the CAP to link the AGR values of the mother and VP[INF] predicate daughter. The HFC then links the AGR values of the ... constructions, [SLASH NP] only marks the path from the NP gap to the V~[INF]/NP dominating to please, failing to continue through the AP easlt to please to the filler Job,. Many sweep- ing ... category to also be instantiated on the mother. The specifica- tion is identical to any instantiation of the same feature on other daughter categories. The FFP ensures that (1) the existence...

Tài liệu Báo cáo khoa học: "DEPENDENCIES OF DISCOURSE STRUCTURE ON THE MODALITY" potx

... from those behind the uttering of " ;the smallest of the red pieces?", where the hearer is expected to physically identify the piece. According to the theory, the speaker ' s ... " ;the other way around", " ;the top is the bottom". ) Requests -to- pick-up (RPUP) (e.g., "take the blue base".) Requests-for-identification (RID) (e.g., "there ... act is expected of the user, the inferential machinery can derive the appropriate intention behind the use of a noun phrase fragment. The theory should account for 48% of the 32 identification...

Tài liệu Báo cáo khoa học: SREBPs: physiology and pathophysiology of the SREBP family ppt

... involved in the regulation of genesparticipating in cholesterol biosynthesis and low-densitylipoprotein receptor synthesis [1,2]. They are now estab-lished as global regulators of lipid synthesis. ... are syn-thesized and located on the endoplasmic reticulum (ER)membrane in their precursor form. To exert transcrip-tional activities, the active N-terminal region of the bHLH needs to undergo ... binds to and escortsSREBP in COPII vesicles to the Golgi apparatus, where the site 1 and site 2 proteases cleave the SREBPs [3,4].Upon restoration of cellular cholesterol, Insig, anotherkey...

Báo cáo khoa học: Recruitment of transcription complexes to the b-globin locus control region and transcription of hypersensitive site 3 prior to erythroid differentiation of murine embryonic stem cells docx

... factors to the a-globin gene locus dur-ing the differentiation of erythroid cells. The regula-tory elements located upstream of the a-globin genesalso appear to initiate the activation of the ... appear to spread outward in both directions to the genes it controls. This is identical to the observed appearance of these marks at the LCR of the globin locus in ES cells followed by the genes ... recruited to the murine b-glo-bin promoter in the absence of the LCR [33]. Thisresult is consistent with the hypothesis that the LCR isrequired for recruiting active transcription complexes to the...

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