PMC:3543929 / 1403-1808 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/3543929","sourcedb":"PMC","sourceid":"3543929","source_url":"https://www.ncbi.nlm.nih.gov/pmc/3543929","text":"Nevill-Manning and Witten [4] pioneered the attempt to produce the context-free grammarof biological sequences in an automatic way. This task can be formalized as the problem of finding the smallest context-free grammar by recursively replacing the repeats by a new symbol. The algorithm builds a hierarchy of phrases by forming a new rule out of existing pairs of symbols, including non-terminal symbols.","tracks":[]}