System and method for automatically generating concepts related to a target concept

A learning system comprising:

• a non-transitory memory;
• and
• one or more hardware processors coupled to the non-transitory memory and configured or programmed to execute instructions to cause the learning system to perform operations including:
• receiving a target concept;
• accessing a set of candidate concepts;
• embedding the target concept and the set of candidate concepts in a semantic vector space;
• and
• selecting one or more intermediate concepts from the set of candidate concepts in response to determining whether each embedded candidate concept in the set of embedded candidate concepts satisfies a predetermined relationship with the embedded target concept;
• wherein
• the determining whether each embedded candidate concept in the set of embedded candidate concepts satisfies the predetermined relationship includes determining whether a displacement vector between each embedded candidate concept and the embedded target concept is within a predetermined range of distances and a predetermined range of directions;
• and
• the predetermined range of distances and the predetermined range of directions are determined based on user information.

A non-transitory machine-readable medium having stored thereon machine-readable instructions executable to cause a learning system to perform operations including:

• identifying a target concept corresponding to a correct answer to a multiple-choice question;
• accessing a set of candidate concepts;
• embedding the target concept and the set of candidate concepts in a semantic vector space;
• and
• selecting one or more intermediate concepts from the set of candidate concepts, the one or more intermediate concepts corresponding to one or more of the set of embedded candidate concepts that are usable as distractors for the multiple-choice question;
• wherein
• the selecting of the one or more intermediate concepts from the set of candidate concepts includes determining whether a displacement vector between each embedded candidate concept and the embedded target concept is within a predetermined range of distances and a predetermined range of directions;
• the predetermined range of distances and the predetermined range of directions are determined based on user information.