A Comparison of Event Models for Naive Bayes Text Classication potx

... the task of text classification in a Bayesian learning framework. This approach assumes that the text data was generated by a parametric model, and uses training data to calculate Bayes- optimal ... calculate Bayes- optimal estimates for these parameters from a set of labeled training data. Here, the estimate of the probability of word w t in class c j is: 2 Many previous...

Ngày tải lên: 16/03/2014, 19:20

... A Comparison of Event Models for Naive Bayes Anti-Spam E-Mail Filtering Karl-Michael Schneider University of Passau Department of General Linguistics Innstr. 40, D-94032 Passau schneide@phil.uni—passau.de Abstract We ... Passau schneide@phil.uni—passau.de Abstract We describe experiments with a Naive Bayes text classifier in the context of anti- spam E-mail filte...

Ngày tải lên: 31/03/2014, 20:20

... Haji ˇ c, Massimiliano Ciaramita, Richard Johansson, Daisuke Kawahara, Maria Ant ` onia Mart ´ ı, Llu ´ ıs M ` arquez, Adam Meyers, Joakim Nivre, Sebastian Pad ´ o, Jan ˇ St ˇ ep ´ anek, Pavel Stra ˇ n ´ ak, ... dependency parsers). 3 Results Table 3 tabulates efficiency and performance for all parsers; UAS and LAS are unlabeled and labeled at- tachment scores, respectively — the standard cr...

Ngày tải lên: 23/03/2014, 14:20

... determination of quality of academic programs, and the basics of capital budgeting. Specific interest centers on the economic value of an MBA and how that value varies with the quality of the program, as ... determination of the top thirty business programs. It reports the usual academic information, such as median GMAT and the acceptance rate of the incoming class, and cert...

Ngày tải lên: 31/03/2014, 01:20

... Krish- nasamy, Jakiela, and Whitney analyzed vibration-assisted entrapment of both simulatedand physicalexperiments [ 10 ] . Reznik, Brown, and Canny presented a qualitative exami- nation of micro-actuated ... enables us to auto- matically generate and perform many experiments over a parameterized multidimensional space of potential designs [ 1 ] . In a similar manner, Brost param...

Ngày tải lên: 03/01/2014, 19:15

...

Ngày tải lên: 19/02/2014, 03:20

... A Comparison of High-Level Full-System Power Models Suzanne Rivoire Sonoma State University Parthasarathy Ranganathan Hewlett-Packard Labs Christos Kozyrakis Stanford University Abstract Dynamic ... a variety of software workloads and hardware platforms. The desirable properties of a full-system model suitable for this type of online use are as follows: Accuracy: The model...

Ngày tải lên: 19/02/2014, 18:20

... dependency parser. 1 Introduction A persistent goal of natural language processing research has been the automated transformation of natural language texts into representations that unambiguously ... both shorter and simpler for the same predicate-argument relationship, and could be encoded in various ways that take ad- vantage of the additional semantic and lexical informatio...

Ngày tải lên: 20/02/2014, 12:20

... performance of a wide variety of time-varying parameter models in forecasting output growth, inflation and a short rate. We find that allowing for time-varying parameters can lead to large and ... variance-covariance matrix of the VAR residuals TVP-FAVAR Time-varying factor augmented VAR model TVP-FAVAR (Homoscedastic) Time-varying factor augmented VAR model with constant varian...

Ngày tải lên: 06/03/2014, 14:20

... be- tween the language used in abstracts and the lan- guage used in the body of a document. For ex- ample, authors may use general language in an 603 abstract and technical language within a docu- ment. ... comparisons among these the event spaces. (4) Abstract versus full -text comparison Language models of scientific articles often consider only abstracts because they...

Ngày tải lên: 17/03/2014, 04:20