The system preferences that libraries can use to alter the search function are:
QueryAutoTruncate: This enables wildcard searching, where the search looks for the exact term entered and various possible endings to the search term.
QueryFuzzy: This enables the search to find the exact term used as well as similarly spelled words.
QueryStemming: This enables the search to find the exact term entered as well as other words which start the same.
One, some or all of these system preferences can be enabled. Many sites use different combinations of all three. While there is no single, definitive combination of settings to achieve the best results, as this would depend on the needs and expectations of different sites, the following is some advice for what tends to be most effective.
The potential downside to turning on all of these system preferences is the search will be too broad. This can mean patrons return an overwhelming amount of items that might only be tangentially related to the search. However on relatively small databases there should not be an overwhelming number of results.
The system preferences that supply the greatest contrast between being turned on and off are QueryAutoTruncate and QueryFuzzy.
QueryAutoTruncate has two settings:
Perform wildcard searching (where, for example, Har would match Harry and harp) automatically.
And Perform wildcard searching (where, for example, Har would match Harry and harp) only if * is added.
We generally advise setting this system preference to only if * is added, as setting this feature to perform automatically can be very resource intensive. When the system preference is set to only if * is added, the student can choose to add “*” to the end of a word, rather than the actual ending. The asterix acts as a wildcard and the search will complete by looking for all possible endings to the word.
Setting this query to only if * is added can be an effective way of getting the benefit from the feature, without overwhelming the system. This also makes the searching process more personalised and transparent for the student who is searching.
In addition to the system preferences which allow staff to alter the way the search functions, it is also possible to alter how the results are displayed. These system preferences allow the search results to display by the title, author etc. as well as in alphabetic or reverse alphabetical order.
OPACdefaultSortField
OPACdefaultSortOrder
You can change these settings to test the various outcomes. The change takes effect immediately on saving the system preference.
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