Tetsunosuke Fujisaki

A STOCHASTIC APPROACH TO SENTENCE PARSING

A description will be given of a procedure to assign the most likely probabilities to each of the rules of a given context-free grammar. The grammar developed by S. Kuno at Harvard University was picked as the basis and was successfully augmented with rule probabilities. A brief exposition of the method with some preliminary results, when used as a device for disambiguating parsing English texts picked from natural corpus, will be given.

Online recognizer for runon handprinted characters

A recognize-then-segment recognizer of unconstrained handprinting is described with uses a unified tablet-display to provide a paperlike computer interface. Whereas most handwriting recognition systems segment and then recognize, this one recognizes and then finds the best segmentation. It classifies strokes, generates character hypotheses, and verifies hypotheses to estimate the optimal character sequence for each word of runon handwritten characters. Linguistic constraints can limit the choices. The system is implemented on an IBM workstation, accepts runon characters written on a tablet, and performs recognition in real time.<<ETX>>

CRITAC—an experimental system for Japanese text proofreading

This paper describes an experimental expert system for proofreading Japanese text. The system is called CRITAC (CRITiquing using ACcumulated knowledge). It can detect typographical errors, Kana-to-Kanji conversion errors, and stylistic errors in Japanese text. We describe the basic concepts and features of CRITAC, including preprocessing of text, a high-level text model, Prolog-coded heuristic proofreading knowledge, and a user-friendly interface. Although CRITAC has been primarily designed for Japanese text, it appears that most of the concepts and the architecture of CRITAC can be applied to other languages as well.

Noun-phrase model and natural query language

Basic considerations in designing a natural data base query language system are discussed. The notion of the noun-phrase data model is elaborated, and its role in making a query system suitable for general use is stressed. An experimental query system, Yachimata, embodying the concept, is described.

CRITAC: a Japanese text proofreading system

CRITAC (CRITiquing using A Ccumulated knowledge) is an experimental expert system for proofreading Japenese text. It detects mistypes, Kana-to-Kanji misconversions, and stylistic errors. This system combines Prolog-coded heuristic knowledge with conventional Japanese text processing techniques which involve heavy computation and access to large language databases.