| Project/Area Number |
17500134
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Sensitivity informatics/Soft computing
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| Research Institution | Tohoku University |
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Principal Investigator |
TANAKA Kazuyuki Tohoku University, Graduate School of Information Sciences, Associate Professor, 大学院情報科学研究科, 助教授 (80217017)
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| Project Period (FY) |
2005 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2006: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2005: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | algorithm / image, text and speech recognitions / statistical science / probabilistic information processing / soft computing |
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| Research Abstract |
The main purpose of the present project is to extend some probabilistic models for probabilistic inference to quantum-mechanical ones and to construct algorithms for the corresponding belief propagation method. The fundamental studies of the quantum-mechanical belief propagation is based on the advanced mean field methods, particularly, the cluster variation method. The conventional belief propagation cannot be applied to the quantized probabilistic models. In the present project, the new belief propagation algorithm has been derived for quantum-mechanical extended probabilistic inference systems. And the general formula for quantum-mechanical belief propagation method has been given. The algorithm usually includes an iterative procedure. The convergence of the iterative procedure is important for applications of the intelligent information processing systems.
Some results have been opened in some invited talks of the following Workshop and Symposiums:
1. Workshop on Mathematics of Statistical Inference (December, 2005, Tokyo Institute of Technology)
2. Symposium of the MEXT Grant-in-Aid for Scientific Research on Priority Areas "Deepening and Expansion of Statistical Mechanical Informatics" (December 2006, Tokyo)
3. Symposium of the 2007 Spring Meeting in the Physical Society of Japan, "Statistical Mechanical Informatics for Quantum Systems" (March 2007, Kagoshima University)
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