Chord: A Scalable Peer-to-peer Lookup Protocol for Internet Applications ppt

... ring. Assuming that the data Chord is being used to locate is cryptographically authenticated, this is a threat to availability of data rather than to authenticity. The same approach used above ... A value can be an address, a document, or an arbitrary data item. Chord can easily implement this functionality by storing each key/value pair at the node to which that key maps. For this r...

Ngày tải lên: 15/03/2014, 22:20

... section a Chord-based application that maps keys onto val- ues. A value can be an address, a document, or an arbitrary data item. A Chord-based application would store and find each value at the ... Peer-to-peer Lookup Protocol for Internet Applications Ion Stoica † , Robert Morris ‡ , David Liben-Nowell ‡ , David R. Karger ‡ , M. Frans Kaashoek ‡ , Frank Dabek ‡ , Hari Bal...

Ngày tải lên: 23/03/2014, 03:20

... problem. Our approach also falls into this category. Alert [SPAM91] was among the earliest active database systems. It tried to reuse most parts of a passive DBMS to implement an active database. 7. ... (1999). [MD89] D. McCarthy and U. Dayal. The architecture of an active database management system. SIGMOD 1989: 215-224. [RC88] A. Rosenthal and U. S. Chakravarthy. Anatomy of a Modular M...

Ngày tải lên: 23/03/2014, 03:20

... systems as a single entity. Cloud computing is an example of an ultimately virtu- alized system, and a natural evolution for data centers that employ automated systems management, workload balancing, ... means to scale applications across thousands of servers instantly. Large amounts of computer resource, in the form of Xen virtual machines, can be provisioned and made availa...

Ngày tải lên: 31/07/2013, 09:43

... Introduction A Language Model (LM) is an important compo- nent within many natural language applications in- cluding speech recognition and machine translation. The task of a generative LM is to assign a ... (Berger et al., 1996) for the task. Unfortunately, data sparsity resulting from the large number of classes makes it difficult to obtain reli- able parameter estimates, even on l...

Ngày tải lên: 07/03/2014, 22:20

... general, a particular semantic interpretation of a sentence can be characterized by a set of lexical categories (or parts of speech), a syntactic struc- ture, and the semantic annotations associated ... information. Hence, we will show how to annotate a syntax tree so that various interpretations can be characterized differently. Semantic Tagging A popular linguistic approach...

Ngày tải lên: 20/02/2014, 21:20

... Dialectics Katerina Pastra Inst. for Language & Speech Processing Athens, Greece kpastra@ilsp.gr Eirini Balta Inst. for Language & Speech Processing Athens, Greece ebalta@ilsp.gr Abstract The growing ... analogy to language discourse analysis for “talking” about multimedia dialectics. It actually borrows terms that are widely used in language analysis for describing a number...

Ngày tải lên: 22/02/2014, 02:20

... outperforms state of the art approaches obtaining an 85% increase in recall at precision 0.9 on the standard pseudo- disambiguation task. Additionally, because LDA-SP is based on a for- mal probabilistic ... Systems. Qiaozhu Mei, Xuehua Shen, and ChengXiang Zhai. 2007. Automatic labeling of multinomial topic models. In KDD. David Mimno, Hanna M. Wallach, Jason Naradowsky, David A. Smith,...

Ngày tải lên: 07/03/2014, 22:20

... trained on Europarl and JRC data. Parallel sentence pairs are extracted from comparable news data published in 2006. For this data, no document-level information was available. To gauge the effect ... 2005). For a given source sentence S, a max- imum entropy (ME) classifier is applied to a large set of candidate target transla- tions . A beam-search algorithm is used to abandon tar...

Ngày tải lên: 17/03/2014, 02:20

... indicating a partial ordering on the acquisition of grammatical features by this popu- lation of learners. 1.4 Applications Having the SLALOM model marked with gram- matical features as being acquired, ... we renamed low, middle, and high. Our chosen method of data exploration was Multivariate Analysis of Variance (MANOVA). An initial concern was to put the samples on equal footing despit...

Ngày tải lên: 17/03/2014, 07:20