Abstract: A log retrieval support device 30 specifies a rare series that is an abnormal event group in a log recording a plurality of events executed in a predetermined system, generates a condition for regarding that there is a log having the same event group as each of the rare series, and specifies the number or ratio of logs having the same event group as each of the rare series among a plurality of logs recording a plurality of events executed in the predetermined system on the basis of the conditions. The log retrieval support device generates a new condition obtained by partially relaxing the condition in the case where the number or ratio is less than a predetermined value and generates a new condition obtained by partially limiting the condition in the case where the number or ratio is the predetermined value or more.

Abstract: A base word inputting unit 101 accepts a base word set 121 for acquiring a text 123. A related word acquisition unit 103 repeatedly acquires a related word on the basis of the base word set 121 and a text data group. A data acquisition unit 102 acquires a text 123 according a word and a related word from a storage apparatus 106. A data filter unit outputs the text 123 filtered using the word and the related word. An information storage unit 105 stores the outputted text.

Abstract: A data analysis device 100 includes a storage device 101 configured to store pieces of knowledge used for data analysis, and a computing device 104 configured to perform a process of extracting variables defining the pieces of knowledge from the pieces of knowledge, a process of specifying values corresponding to the variables for data to be analyzed, and a process of performing, based on the values corresponding to the variables and a predetermined evaluation index, an analysis process for a relation between the variables and the evaluation index to specify information related to a combination of the variables for improving the evaluation index as a suggestion for improvement of the evaluation index.