07 Mar 2016

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Tips for advanced searching in GIPO tool

By: luis.meijueiro

Searching in GIPO's Tool can be as simple as typing a few terms in the search box. You can also refine search results by using the faceted navigation, and the following tips can help you get even more accurate results.

Phrases and (boolean) operators

Fuzzy / Wildcard searching

  • ? searches for items that contain variations that match a single character in the place of the question mark (e.g., cent?? is similar to the following query: centre OR center OR centro OR centri OR …)
  • * searches for items that contain variations that match zero or more sequential characters where the asterisk is placed (e.g., cent*  is similar to the following query: cent OR cents OR center OR central OR century OR …).

Fuzzy / edit-distance searching
You can use the tilde symbol (~) to find terms that are close to the original, or misspellings (e.g., Europa~  is similar to the following query: Europol OR Euroopa OR Europe OR European OR euro OR …).

Proximity searching
You can use the tilde symbol followed by a number (~N) to find the first term within a number (N) of positions from the second term (e.g., “open data” ~2 is similar to the following query: “open data” OR “open government data” OR “open sharing of data” …).

Multi-language searching
You can use lang:LANG-ISO-CODE to search for items written in a given language represented by its ISO 639-1 code (e.g., safe AND harbor~ AND lang:de)

Multi-tag searching
You can use tags:TERM to find all items tagged with some specific terms (e.g., tags:(spyware OR malware))

Date-based searching
You can use tstamp:[DATE-BASED-EXPRESSION] to find all items within a period relative to fixed moments in time (e.g., tstamp:[NOW-5DAYS TO NOW] -tweeted). 
The NOW parameter is used to set a fixed time for evaluating date based expressions. You can add some quantity of time in a specified unit: SECONDS, MINUTES, HOURS, DAYS, MONTHS, or YEARS. Notice that all date based expressions are evaluated relative to the UTC Time Zone.

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