Re: what is precisionStep and positionIncrementGap:
For PrecisionStep, see: http://lucene.apache.org/core/3_6_0/api/all/org/apache/lucene/search/NumericRangeQuery.html?is-external=true positionIncrementgap is for multiValued text fields, it is the space put between the last token of one entry and the first of the next. e.g. field name=mvsome stuff/field field name=mvmore things/field Assume the two were in a single document you added and assume the increment gap were 100. The token positions would be 0, 1, 101 and 102. so the phrase stuff more wouldn't match. Best Erick On Tue, Jun 26, 2012 at 1:47 AM, ZHANG Liang F liang.f.zh...@alcatel-sbell.com.cn wrote: Hi, in the schema.xml, usually there will be fieldType definition like this: fieldType name=int class=solr.TrieIntField precisionStep=0 omitNorms=true positionIncrementGap=0/ the precisionStep and positionIncrementGap is not very clear to me. Could you please elaborate more on these 2? Thanks!
RE: what is precisionStep and positionIncrementGap
Thanks a lot, but the precisionStep is still very vague to me! Could you give me a example? -Original Message- From: Li Li [mailto:fancye...@gmail.com] Sent: 2012年6月28日 11:25 To: solr-user@lucene.apache.org Subject: Re: what is precisionStep and positionIncrementGap 1. precisionStep is used for ranging query of Numeric Fields. see http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/all/org/apache/lucene/search/NumericRangeQuery.html 2. positionIncrementGap is used for phrase query of multi-value fields e.g. doc1 has two titles. title1: ab cd title2: xy zz if your positionIncrementGap is 0, then the position of the 4 terms are 0,1,2,3. if you search phrase cd xy, it will hit. But you may think it should not match so you can adjust positionIncrementGap to a larger one. e.g. 100. Then the positions now are 0,1,100,101. the phrase query will not match it. On Thu, Jun 28, 2012 at 10:00 AM, ZHANG Liang F liang.f.zh...@alcatel-sbell.com.cn wrote: Hi, in the schema.xml, usually there will be fieldType definition like this: fieldType name=int class=solr.TrieIntField precisionStep=0 omitNorms=true positionIncrementGap=0/ the precisionStep and positionIncrementGap is not very clear to me. Could you please elaborate more on these 2? Thanks! Liang
Re: what is precisionStep and positionIncrementGap
read How it works of http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/all/org/apache/lucene/search/NumericRangeQuery.html if you can read Chinese, I have a blog explaining the details of the implementation. http://blog.csdn.net/fancyerii/article/details/7256379 On Thu, Jun 28, 2012 at 3:51 PM, ZHANG Liang F liang.f.zh...@alcatel-sbell.com.cn wrote: Thanks a lot, but the precisionStep is still very vague to me! Could you give me a example? -Original Message- From: Li Li [mailto:fancye...@gmail.com] Sent: 2012年6月28日 11:25 To: solr-user@lucene.apache.org Subject: Re: what is precisionStep and positionIncrementGap 1. precisionStep is used for ranging query of Numeric Fields. see http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/all/org/apache/lucene/search/NumericRangeQuery.html 2. positionIncrementGap is used for phrase query of multi-value fields e.g. doc1 has two titles. title1: ab cd title2: xy zz if your positionIncrementGap is 0, then the position of the 4 terms are 0,1,2,3. if you search phrase cd xy, it will hit. But you may think it should not match so you can adjust positionIncrementGap to a larger one. e.g. 100. Then the positions now are 0,1,100,101. the phrase query will not match it. On Thu, Jun 28, 2012 at 10:00 AM, ZHANG Liang F liang.f.zh...@alcatel-sbell.com.cn wrote: Hi, in the schema.xml, usually there will be fieldType definition like this: fieldType name=int class=solr.TrieIntField precisionStep=0 omitNorms=true positionIncrementGap=0/ the precisionStep and positionIncrementGap is not very clear to me. Could you please elaborate more on these 2? Thanks! Liang
RE: what is precisionStep and positionIncrementGap
看了你的blog，写得相当不错啊！ 我有一个网站www.ecmkit.com，专注内容管理的。有空多交流！ -Original Message- From: Li Li [mailto:fancye...@gmail.com] Sent: 2012年6月28日 15:54 To: solr-user@lucene.apache.org Subject: Re: what is precisionStep and positionIncrementGap read How it works of http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/all/org/apache/lucene/search/NumericRangeQuery.html if you can read Chinese, I have a blog explaining the details of the implementation. http://blog.csdn.net/fancyerii/article/details/7256379 On Thu, Jun 28, 2012 at 3:51 PM, ZHANG Liang F liang.f.zh...@alcatel-sbell.com.cn wrote: Thanks a lot, but the precisionStep is still very vague to me! Could you give me a example? -Original Message- From: Li Li [mailto:fancye...@gmail.com] Sent: 2012年6月28日 11:25 To: solr-user@lucene.apache.org Subject: Re: what is precisionStep and positionIncrementGap 1. precisionStep is used for ranging query of Numeric Fields. see http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/al l/org/apache/lucene/search/NumericRangeQuery.html 2. positionIncrementGap is used for phrase query of multi-value fields e.g. doc1 has two titles. title1: ab cd title2: xy zz if your positionIncrementGap is 0, then the position of the 4 terms are 0,1,2,3. if you search phrase cd xy, it will hit. But you may think it should not match so you can adjust positionIncrementGap to a larger one. e.g. 100. Then the positions now are 0,1,100,101. the phrase query will not match it. On Thu, Jun 28, 2012 at 10:00 AM, ZHANG Liang F liang.f.zh...@alcatel-sbell.com.cn wrote: Hi, in the schema.xml, usually there will be fieldType definition like this: fieldType name=int class=solr.TrieIntField precisionStep=0 omitNorms=true positionIncrementGap=0/ the precisionStep and positionIncrementGap is not very clear to me. Could you please elaborate more on these 2? Thanks! Liang
Re: what is precisionStep and positionIncrementGap
1. precisionStep is used for ranging query of Numeric Fields. see http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/all/org/apache/lucene/search/NumericRangeQuery.html 2. positionIncrementGap is used for phrase query of multi-value fields e.g. doc1 has two titles. title1: ab cd title2: xy zz if your positionIncrementGap is 0, then the position of the 4 terms are 0,1,2,3. if you search phrase cd xy, it will hit. But you may think it should not match so you can adjust positionIncrementGap to a larger one. e.g. 100. Then the positions now are 0,1,100,101. the phrase query will not match it. On Thu, Jun 28, 2012 at 10:00 AM, ZHANG Liang F liang.f.zh...@alcatel-sbell.com.cn wrote: Hi, in the schema.xml, usually there will be fieldType definition like this: fieldType name=int class=solr.TrieIntField precisionStep=0 omitNorms=true positionIncrementGap=0/ the precisionStep and positionIncrementGap is not very clear to me. Could you please elaborate more on these 2? Thanks! Liang
what is precisionStep and positionIncrementGap:
Hi, in the schema.xml, usually there will be fieldType definition like this: fieldType name=int class=solr.TrieIntField precisionStep=0 omitNorms=true positionIncrementGap=0/ the precisionStep and positionIncrementGap is not very clear to me. Could you please elaborate more on these 2? Thanks!
