Scoring candidate evidence passages for criteria validation using historical evidence data

A computer system for scoring candidate evidence data for criteria validation, the computer system comprising:

• one or more computer processors, one or more computer-readable storage media, and program instructions stored on one or more of the computer-readable storage media for execution by at least one of the one or more processors, the program instructions comprising:
• program instructions to collect evidence data, comprising one or more evidence data entries, associated with a criteria, wherein an evidence data entry includes a decision indicator indicating that the criteria is either met or not met by the evidence data entry;
• program instructions to generate candidate evidences, the candidate evidences comprising a corpus of data associated with the criteria, against which the criteria is to be validated;
• program instructions to evaluate a candidate evidence against the evidence data;
• program instructions to generate a score indicating a validity of the criteria with respect to the candidate evidence, based on the decision indicators associated with the evidence data entries, wherein the score corresponds to one of Met, Not Met, or Missing, a score of Missing indicating insufficient data to determine validity or invalidity of the criteria with respect to the evidence data entries;
• program instructions to convert negated text in the evidence data entries to neutral text;
• program instructions to convert negated text in the candidate evidence to neutral text;
• program instructions to negate the respective decision indicators associated with the negated evidence data entries;
• and
• program instructions, in case a candidate evidence is negated, to change a score corresponding to Met to a score corresponding to Not Met, and a score corresponding to Not Met to a score corresponding to Missing.