Keyphrases
Noun Phrase
100%
Concept Hierarchy
81%
Text Mining
61%
Learning Function
61%
Search Engine
50%
Writing-to-learn
48%
Search by multiple Examples
48%
Performance Indicators
44%
Formative Feedback
43%
Digital Libraries
43%
Student Learning
43%
Search Results
42%
Writing Assignments
40%
Conceptual Knowledge
33%
Document Metadata
32%
Subject Metadata
32%
Automatic Feedback System
32%
Positive-unlabeled Learning
32%
Fake News
32%
Class Discussion
32%
Medical Documents
32%
Early Detection
32%
Relevant Documents
30%
Student Performance
29%
Automatically Generate
27%
Association Rules
27%
Document Classification
27%
Background Knowledge
27%
Concept Map
25%
Document Content
24%
Snippets
24%
High-score
24%
Document Text
23%
Knowledge Recommendation
21%
Keyword Density
21%
Online Classes
21%
Query-based
21%
Topical Concept
20%
Recommendation Engine
20%
Course Concept
20%
Keyword Extraction
20%
Automatic Document Classification
19%
Web Search
19%
Conceptual Term
19%
Learning Algorithm
19%
Class Performance
19%
Message Count
19%
Message Length
19%
Student Writing
19%
PU Learning
18%
Computer Science
Text Mining
95%
Experimental Result
84%
Concept Hierarchy
81%
Digital Libraries
69%
Search Engine
54%
Document Classification
52%
Performance Indicator
48%
Support Student
40%
Document Metadata
32%
Conceptual Knowledge
32%
Medical Domain
32%
Social Media
32%
Semantic Metadata
32%
World Wide Web Search
32%
Early Detection
32%
Individual Student
32%
Knowledge Management
32%
Related Application
32%
Learning Algorithm
28%
Association Rules
27%
Background Knowledge
27%
Mean Average Precision
24%
Automatic Approach
24%
Document Retrieval
24%
Systems Performance
24%
Unlabeled Data
24%
Class Performance
21%
Recommendation Engine
21%
Message Length
21%
Data Mining
20%
Unified Theory
16%
Business Intelligence
16%
Learning Course
16%
Level Metadata
16%
Digital Library Resource
16%
Extracted Feature
16%
Partial Order
16%
Topic Modeling
16%
Thesaurus Construction
16%
Text Summarization
16%
Domain Knowledge
16%
Propagation Path
16%
Person Representation
16%
Knowledge Discovery
16%
Library Environment
16%
Recommender Systems
16%
Class Imbalance Problem
16%
Integrating Data
16%
Linear Discriminant Analysis
16%
Positive Example
16%
