Information processing apparatus and information processing method to estimate cause-effect relationship between variables
AssigneeSony Corporation
InventorTakashi Isozaki
Life of this patent
Estimating the term…
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.
Claims12
An information processing apparatus, comprising:
- one or more processors configured to:
- discretize at least one numerical variable by a categorical variable, based on inclusion of the categorical variable and the at least one numerical variable in at least one of a plurality of dependent variables in a graphical model and based on a set of conditional variables that corresponds to conditions of independence between a first variable and a second variable;
- generate a test result based on a test for a conditional independence between the first variable and the second variable, wherein the test for the conditional independence is based on the categorical variable and the discretized at least one numerical variable;
- generate graphical information based on the test result;
- and
- output the graphical information to an output interface.
An information processing method, comprising:
- discretizing at least one numerical variable using a categorical variable, based on inclusion of the categorical variable and the at least one numerical variable in at least one of plurality of dependent variables in a graphical model and based on a set of conditional variables that corresponds to conditions of independence between a first variable and a second variable;
- generating a test result based on a test for a conditional independence between the first variable and the second variable, wherein the test for the conditional independence is based on the categorical variable and the discretized at least one numerical variable;
- generating graphical information based on the test result;
- and
- outputting the graphical information to an output interface.
A non-transitory computer-readable medium having stored thereon, computer-executable instructions which, when executed by a computer, cause the computer to execute operations, the operations comprising:
- discretizing at least one numerical variable using a categorical variable, based on inclusion of the categorical variable and the at least one numerical variable in at least one of plurality of dependent variables in a graphical model and based on a set of conditional variables that corresponds to conditions of independence between a first variable and a second variable;
- generating a test result based on a test for a conditional independence between the first variable and the second variable, wherein the test for the conditional independence is based on the categorical variable and the discretized at least one numerical variable;
- generating graphical information based on the test result;
- and
- outputting the graphical information to an output interface.
Dependencies are inferred from the claim text.