Increased number of PubMed search results (May 28th and onwards)

[Karsten]

Many PubCrawler users experienced a noticeable increase of results for
PubMed searches from May 28th onwards. These are due to an enhancement
of the Automatic Term Mapping at PubMed:
http://www.nlm.nih.gov/pubs/techbull/mj08/mj08_pubmed_atm_cite_sensor.html

[Karsten]

If you would prefer to not make use of the new extensive automatic
term mapping at PubMed you need to place your search terms into quotes
and add a specifier for the search field.

For example, instead of just searching for

sequence composition

change the query to

"sequence composition" [All Fields]

This will reduce the current number of hits from 23608 to 326.

Looking at the 'Details' tab in the PubMed results shows that the
first query is translated as follows:
("base sequence"[MeSH Terms] OR ("base"[All Fields] AND "sequence"[All
Fields]) OR "base sequence"[All Fields] OR "sequence"[All Fields]) AND
composition[All Fields]
whereas the second query is processed as it is.

On May 30, 12:48 pm, Karsten <pubcrawlerh...@gmail.com> wrote:
> Many PubCrawler users experienced a noticeable increase of results for
> PubMed searches from May 28th onwards. These are due to an enhancement

> of the Automatic Term Mapping at PubMed:http://www.nlm.nih.gov/pubs/techbull/mj08/mj08_pubmed_atm_cite_sensor...