Difficulty-Based Knowledge Point Clustering Algorithm Using Students’ Multi-Interactive Behaviors in Online Learning

Table 1

Algorithm MIBKPC (pseudo-code).

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Algorithm 1 MIBKPC

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Input:

 : learner’s multidimensional interactive data set ; is the number of learners

 : number of knowledge point videos

 : number of clusters

Output: knowledge points clusters

(1): for each do

(2): According to Section 3.5, construct ()

(3): for each do

(4): Calculate using formula (1)

(5): Calculate using formula (2)

(6): Calculate using formula (4)

(7): end for

(8):end for

(9): for each do

(10):

(11): end for

(12): for each do

(13): for each do

(14): Calculate using formula (7)

(15): Calculate using formula (12)

(16): Calculate using formula (12)

(17): Calculate using formula (15)

(18): end for

(19): Spectral clustering of classes according to Section 4.4

(20): Return knowledge points clusters

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