Extraction of knowledge points and relations from learning materials

A non-transitory computer-readable medium having encoded therein programming code executable by one or more processors to perform or control performance of operations comprising:

• crawling electronic learning materials stored at least temporarily in one or more non-transitory storage media;
• extracting structural information from the electronic learning materials;
• extracting knowledge points from the electronic learning materials based at least partially on an organization of the electronic learning materials as indicated by the extracted structural information;
• locating positions of each of the knowledge points within each of the learning materials;
• comparing relative positions of knowledge points in the learning materials in which the knowledge points are present;
• inferring hierarchy and dependency relationships between the knowledge points based at least partially on the relative positions of the knowledge points;
• aligning one or more of the knowledge points with at least one specific portion of one or more of the learning materials, wherein each of the specific portions include one of the located positions of the corresponding knowledge point within the learning materials;
• and
• generating a domain knowledge structure including the extracted knowledge points organized at least partially according to the inferred hierarchy and dependency relationships and including the aligned learning materials.

A non-transitory computer-readable medium having encoded therein programming code executable by one or more processors to perform or control performance of operations comprising:

• deciding the relative positions between two knowledge points in the learning materials;
• recommending immediate dependency relationships based on distance between the knowledge points in the hierarchy of knowledge points;
• and
• generating a knowledge point map representative of the dependency relationships.