Query concept

Precision of the query without expansion

Precision of the query with dominant meaning expansion

Improvement in the precision

Q1

Blended learning models

0.59

0.84

0.25

Q2

Role of the student

0.46

0.73

0.27

Q3

Role of the teacher

0.42

0.74

0.32

Q4

Change at the school level

0.44

0.73

0.29

Q5

Hardware, software and space

0.34

0.72

0.38