Báo cáo khoa học: "Estimating Class Priors in Domain Adaptation for Word Sense Disambiguation" pdf

... predominant sense is often indicative of a change in domain, as different corpora drawn from different domains usually give different pre- dominant senses. For example, the predominant sense ... across different domains, estimation of the sense priors (i.e., determining the proportions of the differ- ent senses of a word) occurring in a text corpus drawn from a domain is imp...

Ngày tải lên: 08/03/2014, 02:21

... classes, their root forms, three combinations of these (one preceding word and one following word/ two preceding words and one following word/ one preceding word and two following words), and the ... conducting experiments using our learner corpus, which contains information on learners’ errors. 1 Introduction One of the most important things in keeping up with our current inf...

Ngày tải lên: 20/02/2014, 16:20

... included this extra information in its response, we predicted that it would perform better than LT. In Task 3 users were told to find the shortest train within a new departure interval. Since ... functionality, hints for talking to TOOT, and links to 4 task pages. Each task page contained a task scenario, the hints, instructions for calling TOOT, anal a web survey designed to as...

Ngày tải lên: 17/03/2014, 07:20

... improving precision: 1. Phrases can replace individual indexing words. For example, if both "dog" and "hot" are used for indexing, they will match any query in which both words ... useful for book indexing and automatic thesaurus extraction. 1 Introduction 1.1 Information Retrieval Information retrieval (IR) is an important applica- tion area of naturaMangua...

Ngày tải lên: 17/03/2014, 09:20

... evalu- ation. In both cases, we used 400,000 articles for testing and the remaining 903,000 for training. 7.3.1 Configuration of Classifiers Following Mintz et al. (2009), we used a multi- class logistic classifier ... more than 20 times in the corpus. 7.2.1 Evaluation We split the data into training data and test data. The training data was X r s for 12 relations and the test data w...

Ngày tải lên: 23/03/2014, 14:20

... acetate in 0.15 m NaOH. Following 10 min of isocratic elution with A, a linear gradient to 100% B within 2 min and an isocratic step with B for 2 min was used for column cleaning, before the ... Bandelin Electronic, Berlin, Germany) in 100 lL of distilled water. After incubating at 95 °C for 60 min the homogenate was centrifuged (20 000 g at 4 °C for 15 min) and the supernatant wa...

Ngày tải lên: 30/03/2014, 04:20

... any other domains, domainj seems to be the domain of unit~. The system se- lects the domain which is the largest of all sim- ilarities in N of domains as the domain of the unit (formula (6)) ... vector of each domain is selected as domain of the unit. Finally, the system ex- tracts keywords in each unit using the feature vector of selected domain which is selected by d...

Ngày tải lên: 20/02/2014, 18:20

... co-clustering- based classification (CoCC) for adaptation learning. CoCC was extended from information-theoretic co- clustering (Dhillon et al., 2003), where in- domain constraints were added to word ... largely violated in the setting of domain adapta- tion where training and test data are drawn from dif- ferent distributions. Little research was done for multi-view domain a...

Ngày tải lên: 23/03/2014, 14:20

... features employed for this problem: the set of words within a window of the target word, and collocations containing words and/or parts of 1 Thanks to Dan Roth for making both Winnow and Perceptron ... all one billion words were used for training. In order to avoid training biases that may result from merely concatenating the different data sources to form a larger training...

Ngày tải lên: 23/03/2014, 19:20

... unification grammars in their respective attribution domains and functions (Correa, forthcoming), and the more general nature of attribute grammars in this regard, it is of interest to investigate ... languages. A language is a set of strings o~,er a finite set T of symbols. A grammar is a formal device for specifying which strings are in the set. In particular, a context...

Ngày tải lên: 01/04/2014, 00:20