Báo cáo khoa học: "Quantifying lexical influence: Giving direction to context" docx

... Quantifying lexical influence: Giving direction to context V Krip~sundar kripa~cs, buffalo, edu CEDAR & Dept. of Computer ... dicates the direction of influence (or flow of information). The preponderance of word-pairs that ex- hibit only one direction of significant influence (eg, 'according' ~&apos ;to& apos;) ... occurrence. #Cmax a~ ! max(@wlw2) is defined to be the Wlt~2 maximum co-occurrence frequency in the corpus, and appears to be a better normalisation factor than the size of the corpus itself....

Tài liệu Báo cáo khoa học: "The Lexical Component of Natural Language Processing" docx

... The Lexical Component of Natural Processing George A. Miller Cognitive Science Laboratory Princeton University Language Abstract Computational linguistics is generally considered to be ... whereas computers must work hard to do far less well. A linguistic approach generally involves a parser, a lexicon, and some ad hoc rules for using linguistic context to identify the context-appropriate ... the use of word co-occurrence statistics to create a semantic hyperspace where each word, regardless of its pol- ysemy, is represented as a single vector. Each approach has strengths and limitations;...

Báo cáo khoa học: "Using lexical and relational similarity to classify semantic relations" pptx

... interpretation also includes adescription of lexical and relational similarity. Ap-proaches to compound noun interpretation havetended to use either lexical or relational similarity,though rarely ... equivalent to requiring that thekernel function equate to an inner product in somevector space. The kernel can be expressed in termsof a mapping function φ from the input space X to a feature ... practice,however, the vector length will be lower due to subsequences occurring more than once and manystrings being shorter than smax.One way to reduce the memory load is to re-duce the lengths...

Báo cáo khoa học: "Interactive Discourse: Influence of the Social Context " pot

... ought to be like. Face -to- face conversation is extraordinarily rich in the information that is conveyed by various means, such as gesture, body position, gaze direction [4], [8]. In addition to ... Jerry. What can I do for you today?") is more likely to mislead the user about the system's capabilities than to ease the interaction. What the system does, via lexical choice, indirect ... of today, when the user makes a mistake and the system fails to interpret the input, the user must usually begin over again. The system cannot use whatever it did get from the mistake to...

Báo cáo khoa học: "Controlling Lexical Substitution in Computer Text Generation" docx

... 3: Happing of Potential Antecedence Classes to Lexical Substitutions 6. An Example To see the effects of controlled lexical substitution, and to help clarify the ideas discussed, an example ... rote two I'.,sks. "rho first is to ~dentify the strength of antecedence rucov'crv of toO lexical substitution devices. The second ~s to iderztffy the str~ ngth el pote~:hal arrteceder~ce ... article to mark the fact that it is old information. There is no real need to refer to the presupposed element, since all the reformation is being repeated. Superordinate subslitution is the lexical...

Tài liệu Báo cáo khoa học: "Combining Lexical Semantic Resources with Question & Answer Archives for Translation-Based Answer Finding" doc

... questiontopic and question focus.Acknowledgments We thank KonstantinaGaroufi, Nada Mimouni, Christof Müller andTorsten Zesch for contributions to this work.We also thank Mark-Christoph Müller ... avail-able, up -to- date and have a broad coverage andgood quality. Thanks to the combination of sev-eral resources, it is possible to obtain monolin-gual parallel corpora which are large enough to train ... WikiAn-swers. This corpus will be referred to as LSR.3.3 Translation Model TrainingWe used the GIZA++ SMT Toolkit4(Och andNey, 2003) in order to obtain word -to- wordtranslation probabilities from...

Tài liệu Báo cáo khoa học: "Computing Lexical Chains with Graph Clustering" pdf

... are either bi-directional or inverse, we treat lexical chains as undirected graphs.3.1 The Cohesive Strength Lexical cohesion is the property of lexical entities to “stick together” and function ... Computing Lexical ChainsThe algorithm consists of two stages. First, we compute lexical chains in a text with only one condition: to be included into a chain a term needs to be related to at least ... document:(4)LCtlengthtTFIDFLCScoreLCtLCt)()()(We assume that the top ranked weighted lexical chains represent the main topics in a document. To determine the keyphrases, for each lexical chain we need to choose a term that describes...

Tài liệu Báo cáo khoa học: "Mining metalinguistic activity in corpora to create lexical resources using Information Extraction techniques: the MOP system" doc

... receptor Markers/ Operators: termed Table 4. Sample entry of MID The final processing stage presents metrics shown in Figure 4, using a ß factor of 1.0 to esti-mate F-measures. To better ... autonymical element. iii) Markers/Operators: Elements used to mark or made prominent whole discourse operation, on account of its non-referential, metalinguis-tic nature. They are usually lexical, ... power in Weber's sense of constraint by an ac-tor or group of actors over others. In order to better compare our two strategies, we decided to also zoom in on a more limited sub-set of verb...

Tài liệu Báo cáo khoa học: "Mapping Lexical Entries in a Verbs Database to WordNet Senses" doc

... IntroductionOur goal is to map entries in a lexical databaseof 4076 English verbs automatically to Word-Net senses (Miller and Fellbaum, 1991), (Fell-baum, 1998) to support such applications ... several ways. First, thewords to be disambiguated are entries in a lexical database, not tokens in a text corpus. Second, wetake an “all-words”rather than a lexical- sample”approach (Kilgarriff ... dropped to the ground).1Each -grid speciﬁcation corre-sponds to a Grid class. There are 48 Grid classes,with a one -to- manyrelationship between GridandLevin+ classes.WordNet, the lexical...

Tài liệu Báo cáo khoa học: "Acquiring Lexical Generalizations from Corpora: A Case Study for Diathesis Alternations" pdf

... et al., 1998), and automatic lexical ac- quisition (McCarthy and Korhonen, 1998; Schulte im Walde, 1998). The objective of this paper is to investigate the ex- tent to which diathesis alternations ... log-likelihood ratio (G-score) to esti- mate the lexical association between the nouns, in order to determine if they formed a compound noun. We preferred the log-likelihood ratio to other statis- tical ... was applied to the special case of tuples containing the prepositions to and for only. 2.4.1 Evaluation We evaluated the procedure by randomly select- ing 2,124 tokens containing to- PPs and...

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