Báo cáo khoa học: "Automatic Acquisition of Language Model based on Head-Dependent Relation between Words" pdf

... Automatic Acquisition of Language Model based on Head-Dependent Relation between Words Seungmi Lee and Key-Sun Choi Department of Computer Science Center for Artificial ... grammar, grammar -based language modeling is expected to be more powerful and compact in model size than n-gram -based one. In this paper we present a language modeling based on a kind of simple dependency ... part of many natural language applications such as speech recognition and statistical ma- chine translation. In this paper, we present a language modeling based on a kind of simple dependency...

Báo cáo khoa học: "A Hierarchical Bayesian Language Model based on Pitman-Yor Processes" docx

... Most language models fall into theclass of n-gram models, which approximate thedistribution over sentences using the conditionaldistribution of each word given a context consist-ing of only ... are examples of nonpara-metric Bayesian models. Here we give a quick de-scription of the Pitman-Yor process in the context of a unigram language model; good tutorials on such models are provided ... growth of the number of unique words. In the last two pan-els, we show the proportion of words appearingonly once among the unique words; this gives anindication of the proportion of words...

Báo cáo khoa học: "Automatic Acquisition of English Topic Signatures Based on a Second Language" potx

... Space. A context vector is the sum of thevectors of concepts that occur in a context win-dow. If many of the concepts in a window have astrong component for one of the topics, then thesum of the ... Automatic Acquisition of English Topic Signatures Based on a Second Language Xinglong WangDepartment of InformaticsUniversity of SussexBrighton, BN1 9QH, UKxw20@sussex.ac.ukAbstractWe ... chose concepts thatserve as dimensions of Concept Space using afrequency cut-off. We count the number of oc-currences of any concepts that co-occur with theambiguous word within a context...

Tài liệu Báo cáo khoa học: "AUTOMATIC ACQUISITION OF SUBCATEGORIZATION FRAMES FROM UNTAGGED TEXT" doc

... novel tech- nique based on the Case Filter of Rouvret and Vergnaud (1980). The completeness of the output list increases monotonically with the total number of occurrences of each verb in the ... subcategorization frames (SFs) detected so far The SF acquisition program has been tested on a corpus of 2.6 million words of the Wall Street Journal (kindly provided by the Penn Tree Bank project). On ... verb categorization scheme based on Church's mutual information measure, but to the best of our knowledge no such work has been reported. 4 CONCLUSIONS The ultimate goal of this work is...

Báo cáo khoa học: "Automatic Acquisition of Ranked Qualia Structures from the Web" potx

... ﬁxednumber of basic components”, ”data mining com-prises a range of data analysis techniques”, ”booksconsist of a series of dots”, or ”a conversation ismade up of a series of observable interpersonal ... qualia role.4.4 Conditional Probability (P)The non web -based conditional probability essen-tially differs from the Web -based conditional prob-ability in that we only rely on the qualia elements5Initial ... more or less reliably conveying the relation of interest in line with the seminal work of Hearst(Hearst, 1992), who deﬁned patterns conveying hy-ponym/hypernym relations. However, it is wellknown...

Báo cáo khoa học: "Automatic Acquisition of Adjectival Subcategorization from Corpora" docx

... in-stantiations of slots. A match is considered success-ful if the set of GRs can be uniﬁed with any of thedisjuncts. Uniﬁcation of a sentence -relation and apattern -relation occurs when there is a one-to-onecorrespondence ... forsubcategorization acquisition. 1 IntroductionResearch into automatic acquisition of lexical in-formation from large repositories of unannotatedtext (such as the web, corpora of published text,etc.) ... distributions; consequently, eventhe largest corpora may contain only single instances of a particular adjective-SCF combination, which isgenerally insufﬁcient for classiﬁcation.3 Description of...

Báo cáo khoa học: "Automatic Acquisition of Named Entity Tagged Corpus from World Wide Web" pot

... these erroneous matches. Sentence reﬁnementis accomplished by three different processes: sep-aration of functional words, segmentation of com-pound nouns, and veriﬁcation of the usefulness of the ... othercontexts to reduce errors of automatic annotation.For example, ‘E¶(kyunggi, Kyunggi/business con-ditions/a game)’ is ﬁltered out because it means a lo-cation (proper noun) in one context, ... themanually tagged corpus.2 Automatic Acquisition of an NE TaggedCorpusWe only focus on the three major NE categories (i.e.,person, organization and location) because othersare relatively easier...

Báo cáo khoa học: "AUTOMATIC ACQUISITION OF A LARGE SUBCATEGORIZATION DICTIONARY FROM CORPORA" doc

... subcategorization dictionary from on- line corpora of unrestricted text: 1. Dictionaries with subcategorization information are unavailable for most languages (only a few recent dictionaries, generally ... location information that can be obtained from text corpora, the only research that I am aware of that has dealt directly with the problem of the automatic acquisition of subcategorization frames ... adhere to a conventional no- tion of the distinction, but a tension arises in the work presented here when judgments of argu- ment/adjunct status reflect something other than frequency of cooccurrence...

Báo cáo khoa học: "AUTOMATIC ACQUISITION OF THE LEXICAL SEMANTICS OF VERBS FROM SENTENCE FRAMES*" doc

... or forbidden is merely optional. This model is built upon a classification of verbs based upon a simple three-valued set of features which repre- sents key aspects of a verb's syntactic ... conjunctions of a finite number of predefined quasi-independent features with no need for disjunction or complex boolean combinations of features. Given such a feature set, the Principal of ... physical contact. • Die, flower: Change of state. Inherently non- agentive. • Break: Change of state, undergoing causitive alternation. • Destroy: Verbs of destruction. • Pierce: Verbs of destruction...

Báo cáo khoa học: "Automatic Acquisition of Script Knowledge from a Text Collection" docx

... A 'pair of actions'consists of two actions that occur in time order. A'sequence of actions' can be defined as a transitiveclosure of all the pairs of actions.1. Cases ... of actions that occur in time order.We then chose among these actions the ones thatare typical by ranking them in terms of the fre-quency of their occurrence. To extract sequences of actions ... twoactions occur one after the other and can be ex-tracted as a pair of actions. Let us first explainwhat we mean by 'action', 'pair of actions', and'sequence of actions'...

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