The authors observed that retrieval practice produced better performance than did elaborative study using concept mapping for both types of texts (enumeration texts and sequence texts) and on both types of final tests (short answer and concept mapping).
Text processing and enumeration extraction: The retrieved snippets are first tokenized and then processed using sentence, POS, and NP tagging.
Here, siblings are generated from text by finding enumerations in sentences and extracting the individual terms and the head term (if available) from text.
The second approach uses textual patterns to extract candidate siblings from enumerations in text.
While only 59 abstracts contained siblings in our evaluation, 117 full-text articles contained enumerations which were used to generate siblings.
Listed below, using the enumeration and exact text found in the UMLS, are pertinent paragraphs from the 2003 UMLS License Agreement.
Moreover, experts took into account and analyzed the information put into some simple grammatical structures, which are typical for scientific texts, such as structures with enumeration and so on.
Text-based approach: The second approach finds candidate siblings from text by extracting them from enumerations in sentences.
