ESS Bibliography

The ESS Bibliography utilises the powerful open source search engine Apache Lucene, which provides a rich query syntax:

Terms

A basic query consists of one or more simple terms. A term may be a single word or a phrase enclosed by double quotes. Multiple terms may be combined using the boolean operators OR and NOT:

• To search for entries containing both "values" and "participation" use the query: values participation
• To search for entries containing either "values" or "participation" use the query: values OR participation
• To search for entries containing the phrase "common values" use the query: "common values"
• To search for entries containing "common values", but not "participation" use the query: "common values" NOT participation

Fields

You can specify a field for each term. There are three searchable fields in the ESS bibliography: title_eng, abstract_text and author:

• To search for publications written by Shakespeare with "Henry" in the title use the query: author:shakespeare title_eng:henry

Note: The field is only valid for the term that it directly precedes, so the query title_eng:Do it right will only find "Do" in the title field. title_eng:"Do it right" matches the whole phrase.

Wildcards

Lucene supports single and multiple character wildcard searches. To perform a single character wildcard search use the "?" symbol. To perform a multiple character wildcard search use the "*" symbol.

• The single character wildcard search looks for terms that match that with the single character replaced. For example, to search for "text" or "test" you can use the query:te?t
• Multiple character wildcard searches looks for 0 or more characters. For example, to search for test, tests or tester, you can use the query: test*

Note: You cannot use a * or ? symbol as the first character of a search.

Lucene also provides advanced schemes like fuzzy search, proximity search and range search. Learn more here