Searching for scientific papers with query terms is a challenge due to: mismatch of query terms and document terms; Query expansion may be used to remedy this problem, and category-based query expansio uses semantic information and yield better performance than statistical expansion. Note the following example shows that the expansion terms of dopamine for different Phenotypes (e.g. brain region, cognition and gene) level are quite different from pure statistical co-occurrence.
1: Input interested concept in the input box
2: Click on the suggested concepts in Expanded Queries, and click "Add to Query"
3: Hit the Make Query button to show the results
4: In the results, click 'hide/show' assertions to display assertions mined from a relevant article
Input the concept term and select. The term will be expanded automatically.