Báo cáo toán học: " Indoor positioning based on statistical multipath channel modeling" doc

... location estimator. Keywords: indoor positioning, maximum likelihood (ML), time-of-arrival (TOA), direct location estimation 1 Introduction With the emergence of location -based applications and the ... 2001) doi:10.1186/1687-1499-2011-189 Cite this article as: Yen and Voltz: Indoor positioning based on statistical multipath channel modeling. EURASIP Journal on Wireless Co...

Ngày tải lên: 20/06/2014, 21:20

... performance in multipath channels. The effect of synchronization errors on system performance is analyzed in Section 5. In Section 6, the n umerical results are analyzed. In Section 7, the conclusions are stated. 2 ... dura- tion. And each pulse will generate many multipath com- ponents and the arriving time of each multipath component is not decided by the pulse but the channel env...

Ngày tải lên: 20/06/2014, 21:20

... Partition of the data into folds for the cross-validation procedure. Figure 5 One-vs-all classification. Figure 6 One-vs-one classification. Oussar et al. EURASIP Journal on Wireless Communications ... training/validation set is present once and only once in a validation set. The validation score is the overall classifica tion error rate, computed by count- ing the error on all examples i...

Ngày tải lên: 21/06/2014, 00:20

... wrong in the evaluation. traction (Hovy and Lin, 1997; Mittal et al., 1999). Wetrained a content selection model based on the position of the tokens in the training set in their respective documents. ... closely related to work on statistical machine transla- tion, particularly the ‘IBM-style’ work on CAN- DIDE (Brown et al., 1993). This approach was based on a statistical tra...

Ngày tải lên: 23/03/2014, 19:20

... In the k-dimensional principal eigenspace, each dimension of the space describes a semantic concept of the query. When one eigen- value is bigger, the corresponding dimension con- tains more query ... used. For further analysis, we compute statistical per- formance on mathematical expectation and stan- dard deviation as shown in Figure 2. We observe a consistent trend of the three metrics...

Ngày tải lên: 08/03/2014, 01:20

... other classes. Besides distributional data, our method integrates this semantic information: the classification decision is a function of both (1) the distributional similarity of the new word ... semi-automatic semantic lexicon construction. Proceedings of COLING-ACL: 1110-1116. E.Riloff and J.Sheppard. 1997. A corpus -based T- proach for building semantic lexicons. Proceed- ings of EMNLP...

Ngày tải lên: 08/03/2014, 21:20

... 2011. c 2011 Association for Computational Linguistics Reordering Constraint Based on Document-Level Context Takashi Onishi and Masao Utiyama and Eiichiro Sumita Multilingual Translation Laboratory, ... of imposing reordering constraints us- ing document-level context. As the document- level context, we use noun phrases which sig- nificantly occur in context documents contain- ing source...

Ngày tải lên: 17/03/2014, 00:20

... modificand relation. Experiment Disambiguation of dependency re- lations was done using 75 anlbiguous con- structions from Fukumoto (1992). Solving the ambiguity in the constructions involves ... the one corresponding to the sense 'to be employed.' Determination of Most Strongly Associated Structure After calculating SA for each possible construction, we choose the constr...

Ngày tải lên: 17/03/2014, 07:20

... Polymerization format Monomer selection Medium selection Polymerization conditions Covalent Bulk polymerization Combinatorial screening Organic solvent Cross-linking agent selection Noncovalent ... optimized. Template design, monomer selection, solvent selection and polymerization condi- tions all require attention. In general, the performance of MIPs in aqueous solutions is poor, therefore,...

Ngày tải lên: 23/03/2014, 07:20

... outperform the PageRank -based approach. The results based on the second assumption are even better. This suggests indeed there is a main topic in a DUC 2001 document set. 4 Conclusion In this paper, ... 2004. Event -based Extractive Summarization. In Proceedings of ACL 2004 Workshop on Summarization, pp104-111. Hongyuan Zha. 2002. Generic Summarization and keyphrase Extract...

Ngày tải lên: 23/03/2014, 18:20