| 摘要 |
A related word presentation device (100) for appropriately performing omission prevention search includes: a program information storage unit (101) which stores program information (101a) of each program; an information dividing unit (103a) which generates, for each of the attributes of the words included in the program information (101a), at least one group which includes, as a unit, a reference word which is a word belonging to the attribute and a set of words which co-occur with the reference word in a program; a degree-of-relevance calculating unit (103b) which stores, in an association dictionary storage unit (102), attribute-based association dictionaries (102a, 102b, 102c) each of which indicates, for the corresponding attribute of words, (i) the words and (ii) the degrees of relevance between the words calculated based on the frequency of co-occurrence in each of groups; a search condition obtaining unit (104) which obtains the search word and the attribute; a substitute word obtaining unit (105) which selects substitute words from the attribute-based association dictionary for the obtained attribute; and an output unit (106) which presents the selected substitute word.
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