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Jin Zhao
11/02/2011 / 12
Research in University of Colorado at Boulder• Prof. Tamara Sumner– Curriculum Customization– QUALITY
• Prof. James Martin– General NLP (Semantic Role Labeling, Name
Disambiguation)– Medical NLP
4WING, NUS
Jin Zhao
11/02/2011 / 12
QUALITY Project• Quality indicators– 7 in total: has Instructions, has Sponsors, indicates age
range, etc.– Discovered through data analysis and expert study– Classified using SVM with text features
• Tasks– Classification on smaller text blocks– Build an IR system that utilizes quality indicator information
5WING, NUS
Jin Zhao
11/02/2011 / 12
Information Utilization in Domain-specific IR• Axes for classifying information– Type: excerpts, derived information, user-generated information– Source: intra-resource, inter-resource, external– Level: low, high– Representation: text, numbers, graphs – Size: small, medium, large
• Stages of Information Retrieval– Query formulation– Retrieval– Result Display– Result Navigation
6WING, NUS
Jin Zhao
11/02/2011 / 12
Information Utilization in Domain-specific IR• Quality Indicator Information– Scores
Derived information Intra-resource High-level Numbers Small
7WING, NUS
– Text Snippets Excerpts Intra-resource High-level Texts Medium to large
• Methods of Utilization– Query formulation
Filters and sort options
– Retrieval Filtering and sorting
– Result Display Progressive information display
–Result Navigation Filters and sort options
Jin Zhao
11/02/2011 / 12
System Screenshots• Original Digital Discovery System (DDS)
• Filters and Sort Options at Query Formulation
8WING, NUS
Jin Zhao
11/02/2011 / 12
System Screenshots• Progressive Information Display at Result Display
9WING, NUS
Jin Zhao
11/02/2011 / 12
System Screenshots• Filters and Sort Options at Result Navigation
10WING, NUS
Quality Indicator Information
Grade Level and Resource Type