INFORMATIONS FOR WAIS-SEARCH



    

  1. Query words are case-insensitive.


  2. You can use boolean operator 'and'.


  3. You can use wild-card character '*'.


  4. Some words are not searchable.




<< Case insensitive >>


All words in documents are indexed after translating to lower
  case. Your query words are also translated to lower case before
  being sent to search engine. So, your query is case insensitive,
  therefore, following queries will get same results.
Example
    Query1: rice
    Query2: Rice
    Query3: RICE
    Result: all result for queries shown above are same.


<< Boolean operation >>


The terms 'and' is effective in modifying the query.
Example
    Query:  amino and glycogen
    Result: just those documents with both the words 'amino'
            and 'glycogen'.

Otherwise, when just put some words without 'and', all documents
  including any words of your query are collected as a search
  result.
Example
    Query:  amino glycogen
    Result: all documents including either the word 'amino'
            or 'glycogen'.


CAUTION


If some phrases of your and-combined-query are common, there is
  a case that the result may be wrong, because of memory capacity
  available for WAIS server. For example, a word "rice" is contained
  in so many documents that the server cannot return a correct
  result of a query "stripe and rice". 
Please be careful when using common words with "and" operator.



<< Wild-card character >>


The asterisk (*) applied at the end of a partial word will match
  all documents with words that start with the partial word.
Example
    Query:  phenyl*
    Result: all documents with 'phenyl', 'phenylalanine',
            'phenylalanyl', 'phenylethanolamine', etc.



<< Unsearchable words >>


If a certain word that appears in so many documents, is given as
  a query, the result contains many documents and you will be
  embarrassed which document you are really needing. So when
  indexing the documents, if a occurrence of a word is exceed
  the limit, the word is deleted from index database.

Be careful that commonly appearing words, like 'human', 'dna',
  'sequence' and so on, are deleted. A list of deleted words
  are here.
support@dna.affrc.go.jp .