Information processing apparatus, information processing method, and program

A technology of information processing equipment and variables, which is applied in the direction of reasoning methods, complex mathematical operations, probability networks, etc., and can solve problems such as difficult modeling and estimation methods using the second estimation method

Inactive Publication Date: 2014-12-03
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to apply the modeling and estimation approach to the second estimation method

Method used

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  • Information processing apparatus, information processing method, and program
  • Information processing apparatus, information processing method, and program
  • Information processing apparatus, information processing method, and program

Examples

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Embodiment Construction

[0042] Hereinafter, embodiments of the present technology will be described in detail with reference to the respective drawings.

[0043] Example of hardware configuration of information processing device

[0044] figure 2 An example of the hardware configuration of the information processing device 11 according to the embodiment of the present technology is shown.

[0045] The information processing device 11 tests the independence or conditional independence between multivariate random variables, and outputs the result as a directed graph, an undirected graph, a partially directed graph, a mixed ancestry graph, a partial ancestry graph, and the like. In addition, in the present technique, the existence of correlation between variables is expressed as an undirected edge according to the results of an independence test or a conditional independence test between multivariate random variables. Then, by giving the orientation to Part of an undirected edge, estimating causalit...

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Abstract

Provided is an information processing apparatus that tests independence between multiple variables, the information processing apparatus including: a discretization section that discretizes at least one numerical variable on the basis of at least one categorical variable, when the categorical variable and the numerical variable are included in at least two dependent variables in a graphical model and a set of conditional variables serving as conditions of independence between the two variables; and a test execution section that executes a test for conditional independence between the two variables by using the categorical variable and a discrete variable which is obtained by discretizing the numerical variable.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Priority Patent Application JP2013-106909 filed May 21, 2013, the contents of which are incorporated herein by reference. technical field [0003] The technology relates to an information processing device, an information processing method, and a program. Specifically, the present technology relates to an information processing device, an information processing method, and a program capable of estimating a causal relationship between a plurality of variables. Background technique [0004] In the related art, the estimation of statistical causality from observation data of multivariate random variables is roughly classified into: methods based on informative benchmarks, as scores, maximizing the estimated results, maximum penalty likelihood ratio methods, or Bayesian methods (hereinafter simply referred to as a first estimation method), and a method of performing estimatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/18
CPCG06N5/04G06N7/01
Inventor 磯崎隆司
Owner SONY CORP
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