2. The computer-implemented method of claim 1 , wherein: the identifying analogous changes comprises tracking a number of analogous changes of the first incorrect character for the first correct character during the verification, and determining that the number of analogous changes of the first incorrect character for the first correct character has reached a predetermined threshold, and the initiating of the training of the recognition pattern is based on the determining that the number of analogous changes has reached the predetermined threshold.
1. A computer-implemented method for text analysis, comprising: analyzing verification performed by a user on a recognized text obtained by character recognition of a document image, wherein the verification comprises changing an incorrect character identified by the user for a correct character identified by the user; identifying analogous changes of a first incorrect character for a first correct character; and initiating a training of a recognition pattern based on the identified analogous changes, wherein the recognition pattern is a pattern used in character recognition of the document image to generate the recognized text.