A fast quantum mechanical algorithm for database search pptx

... which are relatively easy as compared to operations required for other quantum mechanical algorithms [BCDP96]. (ii) Quantum mechanical algorithms based on the Walsh-Hadamard transform are likely ... possible quantum mechanical algorithm. 1.2 Quantum Mechanical Algorithms A good starting point to think of quantum mechanical algo- rithms is probabilistic algorithms [BV...

Ngày tải lên: 30/03/2014, 13:20

... 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 target sentences as ... 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....

Ngày tải lên: 17/03/2014, 02:20

... develop a data structure and algorithm that can facilitate efficient retrieval of the top k candidates. In this paper, we propose a probabilistic approach to the task. Our approach is novel and unique ... following aspects. It employs (a) a log-linear (discriminative) model for candidate generation, (b) an effective algorithm for model learning, and (c) an efficient algorithm f...

Ngày tải lên: 30/03/2014, 21:20

... outputs this as a partial parse. Sagae and Lavie (2005) have shown that this algorithm has linear time complexity, assuming that classifica- tion takes constant time. The next example il- lustrates the ... for many practical applications. Deterministic parsing has emerged as an attrac- tive alternative to probabilistic parsing, offering accuracy just below the state-of-the-art in syn- ta...

Ngày tải lên: 20/02/2014, 12:20

... area (Ratnaparkhi et al., 1994; Ber- ger et al., 1996; Pietra et al, 1997; Zhou et al., 2003; Riezler and Vasserman, 2004) In the most basic approach, such as Ratna- parkhi et al. (1994) and ... Conditional Maximum Entropy (CME) modeling has received a great amount of attention within natural language processing community for the past decade (e.g., Berger et al., 1996; Reynar and R...

Ngày tải lên: 17/03/2014, 04:20

... identification on a scale useful for IR remains problematic. Research on Arabic IR tends to treat automatic indexing and stemming separately. Al-Shalabi and Evans (1998) and El-Sadany and Hashish (1989) ... U.K. deroe@essex.ac.uk Waleed AL-FARES Computer Science Department College of Business Studies, Hawaly, Kuwait al-fareswaleed@usa.net Abstract We present a clustering algorithm fo...

Ngày tải lên: 17/03/2014, 07:20

... displayed in Figure 1. accuracy of transitivity labelling was not systemati- cally evaluated here. 2.2 Patterns and matchings Informally, patterns are minimal connected tree fragments containing an ... general, and can serve as a benchmark against which more complex ap- proaches can be evaluated. NP NP DT the NN man SBAR S NP NNP Sam VP VBZ t likes Figure 2: A typical parse tree produced...

Ngày tải lên: 17/03/2014, 08:20

... ~ x Ay Move from after A to before A any xAB y ~==e, x ABy Move from after bigram AB to before AB any Move from after trigram ABC to before ABC any Figure 1: Possible transformations. A, B, ... training data. If we treat the output of an existing segmentation algorithm 3 as the initial state and the desired seg- mentation as the goal state, we can perform a series of transform...

Ngày tải lên: 17/03/2014, 23:20

... problem,’ ‘Bayesian network for a database search setting: suspect and one other individual in the database, ’ ‘Bayesian network for a search of a database of size n > 2,’ and ‘Discussion and conclusions’. Methods Preliminaries In ... Taroni 1 Abstract Background: The database search problem’, that is, the strengthening of a case - in terms of probative value - agai...

Ngày tải lên: 23/03/2014, 12:20

... proposed for natural languages (see Chen-Main and Joshi (2007) for an overview), it seems that there are no important natural language phenomena that can be described by LCFRS and not by TT-MCTAG. Any ... generate only polynomial lan- guages but their generative capacity is too limited to deal with all natural language phenomena. This has been argued for tree-local and even set-local MC...

Ngày tải lên: 23/03/2014, 16:21