Báo cáo khoa học: "Searching for Topics in a Large Collection of Texts" doc

... Fuzzy clustering allows for some ambiguity in the data, and its main advantage over hard clustering is that it yields much more detailed information on the structure of the data (cf. (Kaufman and Rousseeuw, ... in a training collection. The task of -optimization leads to a system of linear inequalities, which we solve via linear program- ming. As there is no scope for this...

Ngày tải lên: 08/03/2014, 04:22

... is involved also. This is so because information sharing facilitates in- formation seeking, for example 2 , when Pl explains the structure of the data base to P2, so that P2 can engage in infor~nation ... distin- guish the types depending on whether an information or information sharin~ interaction zs involved. C interaction is przmarily information seeking, although some sharin...

Ngày tải lên: 17/03/2014, 19:20

... ’Wash- ington’ or the second vowel in the word ’thirty’. Factor analysis has shown that 3 factors are most im- portant, explaining 35% of the total amount of vari- ance. The main drawback of applying ... Multidimensional scaling is data analysis technique that provides a spatial display of the data revealing relationships between the instances in the data set (Davison, 1992). On...

Ngày tải lên: 20/02/2014, 12:20

... during loop entropy selection. There appears to be a continuing bias towards proline and the appearance of a significant bias towards other small amino acids (A, G, S, T) and against amino acids ... larger average length of in- frame fragments from a protein coding frame (33 amino acids) than noncoding frames (25 amino acids). The percentage of individual fragments originating fro...

Ngày tải lên: 30/03/2014, 13:20

... Domain-transcending mappings in a system for metaphorical reasoning John A. Barnden, Sheila R. Glasbey, Mark G. Lee, Alan M. Wallington School of Computer Science, University of Birmingham, Birmingham ... relevant meta- phorical views: MIND IS PHYSICAL SPACE and IDEAS ARE PHYSICAL OBJECTS, con- taining the following relevant mappings: When a person's mind is being viewed as...

Ngày tải lên: 22/02/2014, 02:20

... is usually bound to a restricted application domain and we can imagine that part of a dialogue is domain-dependent while another is domain-independent. Our efforts aim at designing a dia- logue ... of our dialogue module consists of a set of objects among which several relations and inheritance mechanisms are defined. For instance, there are classical is -a links, par...

Ngày tải lên: 09/03/2014, 01:20

... leak in mammalian AQP1, which may explain why 99% of all AQPs carry Asn at the NPA sites. Results Natural replacement of Asn in the NPA motifs is rare Inspection of the b-proteobacterial genome data ... cloning and mutational analysis of a novel aquaglyceroporin carrying one SPA motif instead of the NPA motif from Burkholderia cenocepacia, an epidemic pathogen of cystic fibro...

Ngày tải lên: 15/03/2014, 00:20

... demonstrates how a coherent shared language can evolve in a population of agents as a result of repeated language games - stylised interactions involving the exchange of linguistic information. ... be available to all experiments that can make use of a similar representation. The approach taken in Babel has been to sep- arate out the task of data collection fr...

Ngày tải lên: 23/03/2014, 19:20

... synthesized in the Spemann organizer, namely Follistatin, Chordin and Noggin [12]. These proteins are antagonists of BMP and other members of the TGF-b family, binding to and inhibit- ing these signaling ... 2963 Mutations in BMP regulators Mutation in the BMP binding protein Chordin causes the dino mutant [23,24]. dino mutants show a ventral- ized phenotype (V2), with a small h...

Ngày tải lên: 19/02/2014, 00:20

... and negative opinions? Finally, approaches to opi- nion mining have implicitly assumed that the prob- lem at stake is a balanced classification problem, based on the general assumption that ... where a multiplicity of sentiments for a variety of topics and corresponding targets are potentially involved (Riloff and Wiebe., 2003; Sarmento et al., 2009). Alternative approache...

Ngày tải lên: 20/02/2014, 05:20