Báo cáo khoa học: "Weakly-Supervised Acquisition of Attributes over Conceptual Hierarchies" docx

... first of the 9 senses of companies. Extraction of Attributes for Hierarchy Con- cepts: The labeled classes of instances linked to conceptual hierarchies constitute the input to the acquisition of attributes ... to the root of the hierarchy. The resulting sets of in- stances constitute the input to the acquisition of attributes, which consists of four stages: 1) ide...

Ngày tải lên: 08/03/2014, 21:20

... mode there is wide coverage (over 98% of the BNC receives at least a partial analysis (Carroll and Briscoe, 2002)) which is useful in view of the in- frequent occurrence of some of the SCFs, although combining ... enhancing the performance of ∗ Part of this research was conducted while this author was at the University of Edinburgh Laboratory for Foundations of Computer Scien...

Ngày tải lên: 08/03/2014, 04:22

... The completeness of the output list increases monotonically with the total number of occurrences of each verb in the corpus. False positive rates are one to three percent of observa- tions. ... architecture of the system, and that of this pa- per, directly reflects the three challenges described above. The system consists of three modules: 1. Verb detection: Finds some occ...

Ngày tải lên: 20/02/2014, 21:20

... of NP QT is made of NP’ C “a(x) x comprises” NP QT comprises (of) ? NP’ C “a(x) x consists of NP QT consists of NP’ C Plural “p(x) are made up of ” NP QT is made up of NP’ C “p(x) are made of ... a fixed number of basic components”, ”data mining com- prises a range of data analysis techniques”, ”books consist of a series of dots”, or ”a conversation is made up of a series...

Ngày tải lên: 08/03/2014, 02:21

... sense maps to a set of Chinese synonyms that realise the same concept. English ambiguous word w Sense 1 of w Sense 2 of w Chinese translation of sense 2 Chinese translation of sense 1 English-Chinese Lexicon 1. ... defined in WordNet. The Web provides further ways of overcoming the bottleneck. Mihalcea et al. (1999) presented a method enabling automatic acquisition of...

Ngày tải lên: 08/03/2014, 04:22

... different processes: sep- aration of functional words, segmentation of com- pound nouns, and verification of the usefulness of the extracted sentences. An NE is often concatenated with more than ... the usefulness of the con- structed NE tagged corpus, we apply it to a learn- ing of NER system and compare the results with the manually tagged corpus. 2 Automatic Acquisition of a...

Ngày tải lên: 08/03/2014, 04:22

... grammar-based. N-gram model estimates the probability of a sentence as the product of the probability of each word in the sentence. It assumes that probability of the nth word is dependent on the previous ... probability of the sentence using the probabilities of the struc- tures. Long distance dependencies can be rep- resented well by means of the structures. The appro...

Ngày tải lên: 08/03/2014, 05:21

... corpora, the only research that I am aware of that has dealt directly with the problem of the automatic acquisition of subcategorization frames is a series of papers by Brent (Brent and Berwick ... instances of prefixing, such as overcook and repurchase), but a larger number of the verbs do not appear in the only dictionaries that list subcategorization frames (as thei...

Ngày tải lên: 23/03/2014, 20:20

... AUTOMATIC ACQUISITION OF THE LEXICAL SEMANTICS OF VERBS FROM SENTENCE FRAMES* Mort Webster and Mitch Marcus Department of Computer and Information Science University of Pennsylvania ... 19104 ABSTRACT This paper presents a computational model of verb acquisition which uses what we will call the princi- ple of structured overeommitment to eliminate the need for negative...

Ngày tải lên: 31/03/2014, 18:20

... objects. A 'pair of actions' consists of two actions that occur in time order. A 'sequence of actions' can be defined as a transitive closure of all the pairs of actions. 1. Cases ... (pairs) of actions that occur in time order. We then chose among these actions the ones that are typical by ranking them in terms of the fre- quency of their occurrence. To ex...

Ngày tải lên: 31/03/2014, 20:20