檢索程式使用說明
請您直接於各欄位輸入您所希望檢索的字串或資料,
再選取「開始檢索」, 程式便會依您輸入的資料開始
檢索.
英文複合字如buddha-nature等,目前尚無法視為等同於
buddha nature,因此若欲查得所有關於buddha nature
的資料,必須利用布林邏輯表示法鍵入"buddha nature or
buddha-nature". 這點在以後的版本中會有所改進
這個版本支援布林邏輯運算式,可用 AND (&), OR (|), NOT (!)
來組成查詢字串. 詳細的使用範例可參考下列GAIS的說明文件
片段
3. A Boolean Expression with AND, OR, NOT logic operators.
For example, " ( green | blue ) & !red "
means that the matched documents should contain keywords 'green'
or 'blue' AND they should not contain keyword 'red'.
4. A multi-terms query with ',' separators.
For example, " delicious, apple, juice "
This query means that the users are interested in the above listed terms.
Documents that contain all of them will have higher scores and will be
listed first, then followed by those with matches of two terms, then ...
Note that in the multi-terms bestmatch, the positional relationship
between the terms do not matter.
If one wants to find matches with these terms close together,
then he/she should use phrase matching, i.e.,
change the query to be " delicious apple juice "
then it will match sentence like follows with higher scores:
" I love delicious juice extracted from green apple "
while documents which contain all three terms but separated far
apart will not be output.
DETAILED DESCRIPTION OF THE QUERY LANGUAGE
'(' and ')' is used to group terms.
'&' denotes boolean AND operator.
'|' denotes boolean OR operator.
'!' denotes boolean NOT operator.
',' denotes a term separator.
The following are legal query expressions:
Boolean expressions:
" AA & BB "
" AA & BB | CC " == " (AA & BB) | CC "
" AA & !BB | CC " == " (AA & !BB) | CC "
The following are not legal query expressions:
" AA, BB & CC "
" AA -BB | CC "