Patent ID: 11947583
Assignee: FRONTEO, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 1:
2. A 2D map generation apparatus for generating a 2D map in which a plurality of pieces of target information is plotted on a 2D plane based on a feature vector generated from target information,
the target information is a text, and
the feature vector is a vector having, as a plurality of elements, index values indicating text contributes to which word and to what extent, the apparatus comprising:
a word extraction unit that analyzes m texts (m is an arbitrary integer of 2 or more), and extracts n words (n is an arbitrary integer of 2 or more) from the m texts;
a text vector computation unit that converts each of the m texts into a q-dimensional vector (q is an arbitrary integer larger than 3) according to a predetermined rule, thereby computing m text vectors including q axis components;
a word vector computation unit that converts each of the n words into a q-dimensional vector according to a predetermined rule, thereby computing n word vectors including q axis components;
an index value computation unit that obtains each of inner products of the m text vectors and the n word vectors, thereby computing m×n index values reflecting a relationship between the m texts and the n words;
a feature vector specification unit that specifies, as the feature vector, a text index value group including index values of n words for one text for each of the m texts;
a 2D processing unit that generates 2D latitude and longitude information by performing a dimension compression process on the feature vector; and
a map generation unit that generates the 2D map based on a plurality of pieces of latitude and longitude information generated by the 2D processing unit for the plurality of pieces of target information.