Searching the Help
To search for information in the Help, type a word or phrase in the Search box. When you enter a group of words, OR is inferred. You can use Boolean operators to refine your search.
Results returned are case insensitive. However, results ranking takes case into account and assigns higher scores to case matches. Therefore, a search for "cats" followed by a search for "Cats" would return the same number of Help topics, but the order in which the topics are listed would be different.
Words and Phrases
| Search for | Example | Results |
|---|---|---|
| A single word | cat
|
Topics that contain the word "cat". You will also find its grammatical variations, such as "cats". |
|
A phrase. You can specify that the search results contain a specific phrase. |
"cat food" (quotation marks) |
Topics that contain the literal phrase "cat food" and all its grammatical variations. Without the quotation marks, the query is equivalent to specifying an OR operator, which finds topics with one of the individual words instead of the phrase. |
Using Boolean Operators
| Search for | Operator | Example |
|---|---|---|
|
Two or more words in the same topic |
|
|
| Either word in a topic |
|
|
| Topics that do not contain a specific word or phrase |
|
|
| Topics that contain one string and do not contain another | ^ (caret) |
cat ^ mouse
|
| A combination of search types | ( ) parentheses |
|
- Information retrieval (IR) expert parameters
- ir_asynchronous
- ir_autostop
- ir_boost_same_sequence
- ir_cluster_closeness
- ir_cluster_symbol
- ir_disable
- ir_language
- ir_languagefiles_path
- ir_max_clusters
- ir_max_relevant_answers
- ir_max_shared
- ir_min_cluster_members
- ir_minidf
- ir_opt_path
- ir_prefix
- ir_query_drop_off
- ir_sql_limit
- ir_term_drop_off
- ir_timelimit
Information Retrieval (IR) expert parameters: ir_minidf
Parameter
ir_minidf
Description
This parameter defines the minimum relevance ranking that search terms must have for Service Manager to include them in Information Retrieval (IR) search results. Service Manager ranks each search term based on how frequently it appears in the index. Terms that appear in the index less frequently are assigned more relevance in search results. If a term appears in the index too frequently, Service Manager ignores the search term as if it were in the stop word list.
Service Manager determines a relevance ranking for each search term by computing an IDF value. Service Manager uses the following formula to compute the IDF value of search terms: [natural log (terms in index/number of instances of search term in index)]+1
For example, in an index of 1000 terms, a search term that appears 250 times in the index has an IDF value of 2.4. Since this is below the minimum value of 2.5, Service Manager ignores the term because it appears too frequently. A search term that appears only 10 times in the index however has an IDF value of 5.6, and since this term exceeds the minimum IDF value threshold, Service Manager includes it in the search results.
Valid if set from
Server's operating system command prompt
Initialization file (sm.ini)
Requires restart of the Service Manager server?
Yes
Default value
2.5
Possible values
Minimum IDF value
Example usage
Command line: sm -httpPort:13080 -ir_minidf:2.4
Initialization file: ir_minidf:2.4
Related topics
Information Retrieval (IR) expert parameters
Information Retrieval (IR) expert parameters: ir_term_drop_off
