Information processing apparatus, method, and storage medium

A method for assessing proficiency of a language, the method comprising:

• acquiring multimodal input data of the language, the multimodal input data including a combination of two or more of text information, audio information, and video information;
• extracting, from the acquired multimodal input data, a plurality of linguistic features including a multimodal feature in which features of different modalities of the multimodal input data are blended with one another;
• calculating a score for each of a plurality of indices of the proficiency based on the extracted plurality of linguistic features;
• calculating, as a basis for the score, a contribution degree of each of the plurality of linguistic features to the calculated score;
• and
• outputting the score for each of the plurality of indices together with the basis for the score.

A non-transitory computer-readable medium storing a program for assessing proficiency of a language, the program, when executed by a processor, causing the processor to:

• acquire multimodal input data of the language, the multimodal input data including a combination of two or more of text information, audio information, and video information;
• extract, from the acquired multimodal input data, a plurality of linguistic features including a multimodal feature in which features of different modalities of the multimodal input data are blended with one another;
• calculate a score for each of a plurality of indices of the proficiency based on the extracted plurality of linguistic features;
• calculate, as a basis for the score, a contribution degree of each of the plurality of linguistic features to the calculated score;
• and
• output the score for each of the plurality of indices together with the basis for the score.