Natural language processing neural network considering deep cases

Tsukasa Sagara, Masafumi Hagiwara

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In this paper, we propose a novel neural network considering deep cases. It can learn knowledge from natural language documents and can perform recall and inference. Various techniques of natural language processing using Neural Network have been proposed. However, natural language sentences used in these techniques consist of about a few words, and they cannot handle complicated sentences. In order to solve these problems, the proposed network divides natural language sentences into a sentence layer, a knowledge layer, ten kinds of deep case layers and a dictionary layer. It can learn the relations among sentences and among words by dividing sentences. The advantages of the method are as follows: (1) ability to handle complicated sentences; (2) ability to restructure sentences; (3) usage of the conceptual dictionary, Goi-Taikei, as the long term memory in a brain. Two kinds of experiments were carried out by using goo dictionary and Wikipedia as knowledge sources. Superior performance of the proposed neural network has been confirmed.

Original languageEnglish
Pages (from-to)551-557
Number of pages7
JournalIEEJ Transactions on Electronics, Information and Systems
Issue number3
Publication statusPublished - 2011


  • Deep Case
  • Inference
  • Natural Language Processing
  • Neural Network

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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