INPUT ERROR DETECTION APPARATUS, INPUT ERROR DETECTION METHOD, AND INPUT ERROR DETECTION PROGRAM

In an input error detection apparatus (100), a selection unit (108) selects a group of words that appear in both: a system specification document (117) having described therein, in a natural language,the specification of an information system; and a document (116), to be analyzed, having described therein, in a natural language, analysis device input information (111) which is information inputted to an analysis device for analyzing the information system, and analysis device output information (112) which is information outputted from the analysis device appears. A learning unit (109) learnsmeanings of individual words which belong to the group of words selected by the selection unit (108) in the system specification document (117) and the document (116) to be analyzed. A detection unit(110) identifies a word error which has been caused by an input error of the analysis device input information (111) and which is included in the document (116) being analyzed, by detecting a change,between the system specific