Information processing system, descriptor creation method, and descriptor creation program
AssigneeDotdata, Inc.
InventorsYukitaka Kusumura, Ryohei Fujimaki
Life of this patent
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Abstract
A table storage unit 81 stores a first table including an objective variable and a second table different in granularity from the first table. A descriptor creation unit 82 creates a feature descriptor for generating a feature which is a variable that can influence the objective variable, from the first table and the second table. The descriptor creation unit 82 creates a plurality of feature descriptors, each by generating a combination of a mapping condition element indicating a mapping condition for rows in the first table and the second table and a reduction method element indicating a reduction method for reducing, for each objective variable, data of each column included in the second table.
Claims13
An information processing system comprising:
- a computing device including a processor and a memory;
- and
- a storage device in communication with the computing device, the storage device configured to store a descriptor creation program executable by the processor, the descriptor creation program including:
- a table storage unit which stores a first table including an objective variable and a second table, wherein the first table and the second table each include a plurality of rows and a row of the first table has a non one-to-one relationship with multiple rows of the second table;
- a descriptor creation unit, implemented by the processor, which creates, based on the first table and the second table, a plurality of feature descriptors,
- wherein the descriptor creation unit creates each feature descriptor included in the plurality of feature descriptors based on a combination of a mapping condition element indicating a mapping condition for rows in the first table and the second table, a reduction method element indicating a reduction method for reducing data included in the second table;
- and
- a feature generation unit, implemented by the processor, which generates a plurality of features by applying the plurality of feature descriptors to the first table and the second table.
A descriptor creation method comprising:
- creating, from a first table including an objective variable and a second table, a plurality of feature descriptors, wherein the first table and the second table each include a plurality of rows and a row of the first table has a non one-to-one relationship with multiple rows of the second table;
- wherein each feature descriptor in the plurality of feature descriptors is created based on a combination of a mapping condition element indicating a mapping condition for rows in the first table and the second table and a reduction method element indicating a reduction method for reducing data included in the second table;
- and
- generating a plurality of features by applying the plurality of feature descriptors to the first table and the second table.
Dependencies are inferred from the claim text.