To remove information that becomes noise for object recognition from learning data when generating learning data used for object recognition from information acquired by web search.SOLUTION: In an autonomous learning device 100, a related word group generation unit 1 performs a keyword search using a given input word, extracts a noun from a search result to generate a related word group. A true related word group generation unit 2 determines relevance between a word included in the related word group and an input word, and generates a true related word group in which a word having no predetermined relevance to the input word is removed from the related word group. An image search unit 3 performs an image search using a word included in the true related word group to acquire an image. A classifier generation unit 4 generates a classifier, with each of words included in the true related word group and an image corresponding to each of the words included in the true related word group as learning data.SELECTED DRAWING: Figure 1
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