Thesaurus based search

The thesaurus based search can be activated at any time from the main menu by selecting any of the navigation modes, or by clicking on the Thesaurus button on the tools frame (the frame to the left of the page). Whichever navigation mode you select, your working frame will be split into two: the navigation frame and the descriptor accumulation frame. The first frame is for navigating various parts of the thesaurus in different ways. In the second frame in a special text area you can see all the selected descriptors (see how to get the descriptor to this area)

The thesaurus based search comprises 2 steps:

  • step 1: collecting requested descriptors while navigating through the thesaurus
  • step 2a: running the query after having collected descriptors

  • or
  • step 2b: editing the query before running it - adding values to search fields

 

AGROVOC-thesaurus

Start from: 
ABA
ABACA: ABACA
ABALONES: ABALONES
ABAMECTIN use: AVERMECTINS
ABANDONED: ABANDONED LAND

LAND, ABANDONED
      use: ABANDONED LAND (....)

 

How to get a descriptor

While navigating through the AGROVOC thesaurus you will notice that each descriptor is preceded by a blue marker . Whenever you find the descriptor useful for your query just click on the marker: this will add the descriptor to the text area on the right-hand frame. All the desciptors selected accumulate in this text area.

NOTE: The cumulation process uses the "cookies" feature of your browser. If you notice that the descriptors are not accumulating in your text area, you should enable the Cookies and JavaScript option on your browser.

Search

If you do not intend to edit the query, just press the button SEARCH which is located inside the accumulation frame. This will give you a new browser window, where the search result will be displayed.

Note: by default the logical operator connecting more than one selected descriptor is OR.

If the results are too numerous, return to the original navigation window and press the button EDIT QUERY to make your query more selective by changing defaults, adding/refining search criteria, etc.
Check the example.
 

Edit query

When the selection of descriptors is complete, click on the EDIT QUERY button inside the accumulation frame. This will give you a new browser window, where the standard query form will be displayed. Using the query form you may then specify further search criteria (e.g. region, location, country, etc). You can also change the sort criteria for your output, and then press the SEARCH button located on the search screen.