We report on the Parallel Grammar (ParGram) project which uses the XLE parser and grammar development platform for six languages: English,

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This paper proposes a method for extracting bilingual text pairs from a comparable corpus. The basic idea of the method is to apply bootstrapping to an existing corpusbased cross-language information retrieval (CLIR) approach. We conducted preliminary tests with English and Japanese bilingual corpora. The bootstrapping method led to much better results for the task of extracting translation pairs compared with a corpus-based CLIR method without bootstrapping, and the extracted translation pairs could be useftfl training data for improving results of the corpus-based CLIR method.

A Lexical Transducer (LT) as defined by Karttunen, Kaplan, Zaenen 1992 is a specialized finite state transducer (FST) that relates citation forms of words and their morphological categories to inflected surface forms. Using LTs is advantageous because the same structure and algorithms can be used for morphological analysis (stemming) and generation. Morphological processing (analysis and generation) is computationally faster, and the data for the process can be compacted more tightly than with other methods. The standard way to construct an LT consists of three steps: (1) constructing a simple finite state source lexicon LA which defines all valid canonical citation forms of the language; (2) describing morphological alternations by means of two-level rules, compiling the rules to FSTs, and intersecting them to form a single rule transducer RT; and (3) composing LA and RT.

This paper describes a Japanese parsing system with a linguistically fine-grained grammar based on Lexical-Functional Grammar (LFG). The system is the first Japanese LFG parser with over 97% coverage of real-world text. We evaluated the accuracy of the system by comparing it with standard Japanese dependency parsers. The LFG parser shows roughly equivalent performance in dependency accuracy with standard parsers. It also provides reasonably accurate results of case detection.