Báo cáo khoa học: "A Compacting the Penn Tree bank Grammar" doc

... Abstract Treebanks, such as the Penn Treebank (PTB), offer a simple approach to obtaining a broad coverage grammar: one can simply read the grammar off the parse trees in the treebank. While ... defined) are elimin- ated from the grammar. Our experiments on compacting a PTB tree- 1 For the complete investigation of the grammar ex- tracted from the Penn Treeba...

Ngày tải lên: 08/03/2014, 05:21

... make the right choice. The leftward attaching operation equates the root of the tree fragment on the end of the list with some node in the grammar entry, as long as this root is not the initializing ... with a node in the next earlier tree fragment on the list. The later is how tree fragments are removed from the list. The bound on the number of entities...

Ngày tải lên: 20/02/2014, 21:20

... that the surface graph is a tree. The tree- hood of surface graphs is part of the defini- tion of S-graph and provides the foundation for our parsing algorithm; it is the SFG analog to the ... ]. The prefix [2,1) of the label [2,1,0] is the SFG representation of RG's unaccusative analysis of adjectives. The suffix (1,0] of [2,1,0]; the prefix [0,1) of the...

Ngày tải lên: 20/02/2014, 21:20

... variables. We refer to the part of a non-atomic definite clause coming on the left of the implication connective as to the body of the clause, and to the one on the right as to the head. With respect ... rule (I). The height of a proof is the length of the longest path from the root to some leaf. The size of a proof is the number of nodes in it. Thus, proof r...

Ngày tải lên: 17/03/2014, 20:20

... Figures 2 and 4 illustrate the permu- tations these operators make to derivation trees. The omitted tree structure in these figures denotes the Markov blanket of the operator: the structure which is ... their right hand side. Further, Bayesian non-parametrics allow the capacity of the model to grow with the data. Thereby we avoid imposing hard limits on the grammar (and th...

Ngày tải lên: 20/02/2014, 07:20

... tokenize the question, we parse the answer sentence, we identify the question terms and answer in the parse tree, and then we make a "cut" in the tree that satisfies the following ... is the age of our solar system?” from the logical form of the answer The solar system is 4.6 billion years old.”, the LCC theorem prover shows that the atomic formula...

Ngày tải lên: 08/03/2014, 04:22

... list. On the one hand, we must decide whether to store there the contents of the words that contain the segmentation checking codes for the various lexes or merely the addresses of these words. ... takes the longest heading contained in the vestigand (beginning at the left) as the first lex, the longest heading contained in the remainder (if any) as the next, etc...

Ngày tải lên: 16/03/2014, 19:20

... this case, they had the chance to sub- mit their best candidate in order to assess the perfor- mance of their validation module (the one that de- cides whether to give or not the answer). This ... apply the algorithm of Figure 1 to obtain the information needed for computing the error rate (Formula (7)). Stability is inverse to this value, the lower the error rate is, the m...

Ngày tải lên: 17/03/2014, 00:20

... the semantic role direction. If there is a landmark adja- cent to the turning point, it is added to the frame as the role filler of the role source.  If a landmark is adjacent or within the ... within the segment to role fillers of the considered frame. The rules are specified as follows:  A turning point given by the Google Maps API is mapped to the SELF_MOTION...

Ngày tải lên: 17/03/2014, 02:20

... depicts the general architecture of the infrastructure. The technical components listed above are deployed as shown in the figure. Computational nodes in the language grid are classified into the ... derive a taxonomy of linguistic service and the associated language resources. 3 The Upper Ontology 3.1 The top level We have developed the upper part of the service...

Ngày tải lên: 17/03/2014, 04:20