EVALUATION APPARATUS, EVALUATION METHOD AND COMPUTER PROGRAM
To provide a technique capable of mechanically selecting a structural model adapted to corresponding data indicating a correspondence between an objective variable and an explanatory variable in an evaluation apparatus that evaluates a structural model representing a covariant relationship between t...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a technique capable of mechanically selecting a structural model adapted to corresponding data indicating a correspondence between an objective variable and an explanatory variable in an evaluation apparatus that evaluates a structural model representing a covariant relationship between the objective variable and the explanatory variable.SOLUTION: An evaluation apparatus includes a model generation unit that generates a structural model by a structural leaning using corresponding data indicating a correspondence between an objective variable representing a quality of a product and an explanation variable relating to the object obtained in a manufacturing process of the product, a maximum likelihood estimation value operation unit that calculates a maximum likelihood estimation value of a conditional Gauss distribution, in which the objective variable is known, using the corresponding data, and a model evaluation unit that evaluates the structural model based on the maximum likelihood estimation value.SELECTED DRAWING: Figure 1
【課題】 目的変数と説明変数との共変関係を表す構造モデルを評価する評価装置において、目的変数と説明変数との対応関係が示された対応データに適合する構造モデルを機械的に選択することが可能な技術を提供する。【解決手段】 評価装置は、製品の品質を表す目的変数と製品の製造工程で得られる製品に関連する説明変数との対応関係が示された対応データを用いて構造学習によって構造モデルを作成するモデル作成部と、対応データを用いて目的変数を既知とした条件付きガウス分布の最尤推定値を算出する最尤推定値演算部と、最尤推定値に基づいて構造モデルを評価するモデル評価部と、を備える。【選択図】 図1 |
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