reducing semantic drift with bagging and distributional similarity

... ACL and the 4th IJCNLP of the AFNLP, pages 396–404, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP Reducing semantic drift with bagging and distributional similarity Tara McIntosh and ... variation with bagging, sampling from automatically ex- tracted seeds to reduce semantic drift. However, semantic drift still occurs in later iterations. We propose an integrated distributional similarity ... novel unsupervised bagging approach to reducing semantic drift. In this sec- tion, we consider the standard bagging approach introduced by Breiman (1996). Bagging was used by Ng and Cardie (2003)...

Ngày tải lên: 08/03/2014, 00:20

... 2 Background 2.1 Distributional Similarity and Lexical Entailment The general idea behind distributional similarity is that words which occur within similar contexts are semantically similar ... substantially with just little effect on precision. 3.2.2 Distributional Similarity Candidates As mentioned in Section 2, we employ the distri- butional similarity measure of (Geffet and Da- gan, ... are semantically similar based on distributional similarity of the different contexts in which the two words occur. The distributional method identifies a somewhat loose notion of semantic similarity, ...

Ngày tải lên: 17/03/2014, 04:20

... Linguistics Verb Classification using Distributional Similarity in Syntactic and Semantic Structures Danilo Croce University of Tor Vergata 00133 Roma, Italy croce@info.uniroma2.it Alessandro Moschitti University ... theories, namely VerbNet and FrameNet. First, syntac- tic and semantic structures capturing essential lexical and syntactic properties of verbs are defined. Then, we design advanced similarity functions ... classification according to VerbNet and FrameNet. We define syntactic and semantic struc- tures capturing essential lexical and syntactic prop- erties of verbs. Then, we apply similarity between 263 VerbNet...

Ngày tải lên: 23/03/2014, 14:20

... proposals to ex- tract semantically related words using measures of distributional similarity, but these typically are not able to distin- guish between synonyms and other types of semantically related ... correct alignments and this causes many mistakes in the distributional simi- larity algorithm. We have given some examples in rows 4 and 5 of table 5. We have used the distributional similarity score only ... Alignment and Measures of Distributional Similarity Lonneke van der Plas & J ¨ org Tiedemann Alfa-Informatica University of Groningen P.O. Box 716 9700 AS Groningen The Netherlands {vdplas,tiedeman}@let.rug.nl Abstract There...

Ngày tải lên: 20/02/2014, 12:20

... Syntactic and Semantic Transfer with F-Structures* Michael Dorna*, Anette Frank t, Josef van Genabith* and Martin C. Emele* *IMS, Universit~it Stuttgart ... head-switching and multiple adjuncts (Sadler and Thompson, 1991), which led to the introduction of a restriction operator, to en- able transfer on partial f-structures or semantic structures (Kaplan and ... transfer on the semantic UDRS representations does not suffer from such prob- lems. Head switching is dealt with in the con- struction of semantic representations. Under- specified semantic representations...

Ngày tải lên: 20/02/2014, 18:20

... distinct types of word pair similarity: lexical similarity and relational similarity. We present an efficient and flexible technique for imple- menting relational similarity and show the effectiveness ... for statistical machine learning with kernel methods. We present a new flexible and efficient kernel- based framework for classification with relational similarity. In Sections 4 and 5 we apply our methods ... relational similarity but not both in com- bination. Previously proposed lexical models in- clude the WordNet-based methods of Kim and Baldwin (2005) and Girju et al. (2005), and the distributional...

Ngày tải lên: 08/03/2014, 21:20

... (see Geffet and Dagan, 2004 and Gef- fet and Dagan, 2005, who improve the output of a distributional similarity system for an entailment task using a web-based feature inclusion check, and comment ... acquisition systems in- clude DIRT (Lin and Pantel, 2001), which uses distributional similarity on a 1 GB corpus to iden- tify semantically similar words and expressions, and TEASE (Szpektor et al., 2004), ... recall to remain acceptable). We experiment with left and right contexts, i.e. with the query term at the beginning and the end of the n-gram, and with various combinations (see Section 6). 6...

Ngày tải lên: 08/03/2014, 21:20

Ngày tải lên: 24/03/2014, 03:20

Ngày tải lên: 31/03/2014, 03:20

... filled with the All Layers check box deselected Shapes filled with the All Layers check box selected Figure 10-7: Filling a section with All Layers off and on. 196 Part III: Refining and Exporting ... hundreds or thousands of tiny images. Impressive in and of itself, but when you stand back, you see that all the tiny pictures become part of one large picture. It’s all in how the mind perceives and mentally ... the program finds a border without gaps. If you aren’t careful, you can find yourself with a completely black page! You could comb over the area with your pen or marker and draw in any gaps you...

Ngày tải lên: 27/08/2012, 14:31

... with fucose/galactose could reduce P. aeruginosa and neutrophils in sputum as well as TNFα expression in sputum and peripheral blood of CF patients with acute exacerbation. Combination with ... Figure 3: TNFα serum protein levels before (pre) and after (post) treatment with inhalation alone (p. i.) or combined treatment with inhalation and i. v. antibiotics (p. i. + i. v.). Mean+SEM. ... fucose and ga- lactose, which compete for the sugar binding site of the two lectins and thus inhibit the binding of P. aeruginosa. Methods: 11 adult CF patients with chronic infection with P....

Ngày tải lên: 03/11/2012, 11:48

... and to warm up people in cold weather. camping When people go camping, they go into an outdoor area and sleep in a tent, cabin or camper. candle A candle is a stick of wax with ... the object and some returns. The returning echo is interpreted to determine the object's shape, direction, distance, and texture. Dolphins (and other toothed whales) and some bats ... of the face that is above the eyebrows and below the hair. hair Hair grows on all mammals. hand We can do amazing things with our hands. head We all have a head on...

Ngày tải lên: 16/04/2013, 23:27

... Topic4: MY NEIGHBORHOOD PERIOD 14. PRESENT PERFECT WITH SINCE AND FOR A. Revision: The Present Perfect Tense 1. Form - Affirmative: S + has/have +V3/ed…. ... working here a year ago and still works here.) - We do not use for + all (all day/all my life etc.): * I've lived here all my life. (not 'for all my life') - Since with the point in ... night. 5 Terry (clean)__________ the lawn tomorrow. 6 John and I (be)______________ pen pals for nearly 3 years. 7 Maryam (stay)____________ with us at the moment. ...

Ngày tải lên: 08/07/2013, 01:27

Ngày tải lên: 17/08/2013, 10:40

Ngày tải lên: 21/08/2013, 14:10

Ngày tải lên: 22/08/2013, 14:52

... bank. ………………………………………………………………………… 3. “If I were you, I wouldn’t buy that second-hand car.” Said John. ………………………………………………………………………… 4. “Would you like to go out for dinner with me?” said Mary. …………………………………………………………………………. 5. ... together.” Said the Trade Union Officer. ……………………………………………………………………………. 8. “Don’t touch that wire with your wet hand.” said the teacher. …………………………………………………………………………… Prepared by Nguyễn Thị Ngọc Trân 26. ... myself.” ……………………………………………………………………………………………………. 22. He said: “I haven’t had linch with a friend for ages.” ……………………………………………………………………………………………………. 23. He said: “ I hope my friend will come and visit me in Marid.” ……………………………………………………………………………………………………. 24....

Ngày tải lên: 05/09/2013, 04:10

Ngày tải lên: 05/09/2013, 16:10

... reported speech with infinitive and gerund Exercise 1. Rewrite each of the following sentences in reported speech.Using ... to Henry.  Jane accused Exercise 3. Rewrite the following sentences with Infinitive or Gerund 1. “ I will bring the sandwiches to the party” said Helen.  Helen offered 2. “ Let’s all go ... traffic warden warned 14. “ Please do go to the movies with me tonight.” said Aunt Fancy.  Aunt Fancy persuaded me 15. “ Why don’t we work and keep ourselves from starving?” said Mike.  Mike...

Ngày tải lên: 24/10/2013, 01:11

Ngày tải lên: 25/10/2013, 06:20