# Problème with french stemmer **URL:** \ **Category:** Elasticsearch\ **Created:** [June 28, 2011, 6:53pm UTC](https://discuss.elastic.co/t/probleme-with-french-stemmer/4726 "2011-06-28T18:53:24Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Alexandre\_Heimburger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alexandre_heimburger/32/2941_2.png) [@Alexandre\_Heimburger](https://discuss.elastic.co/u/Alexandre_Heimburger)\ **Post date:** [June 28, 2011, 6:53pm UTC](https://discuss.elastic.co/t/probleme-with-french-stemmer/4726/1 "2011-06-28T18:53:24Z")
Hi, I work on a "search as you type" box. Many users are indexed. For example, when I type : Fre I should get Docteur Freud, Frédéric Durand, Jean Frérac.... all these names matching Fre / Fré / Frê etc.... I tried to use a custom analyzer with a light french stemmer but I can only get Frédéric if I type Fré. You will find the configuration in the associated gist. Thanks for your help. > ---
**Author:** ![rmuir](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rmuir/32/44949_2.png) [@rmuir](https://discuss.elastic.co/u/rmuir)\ **Post date:** [June 28, 2011, 7:31pm UTC](https://discuss.elastic.co/t/probleme-with-french-stemmer/4726/2 "2011-06-28T19:31:13Z")
On Tue, Jun 28, 2011 at 2:53 PM, alheim [alexheimburger@gmail.com](mailto:alexheimburger@gmail.com) wrote: > Hi, > > I work on a "search as you type" box. > > Many users are indexed. > > For example, when I type : Fre > > I should get Docteur Freud, Frédéric Durand, Jean Frérac.... all these > names matching Fre / Fré / Frê etc.... > > I tried to use a custom analyzer with a light french stemmer but I can > only get Frédéric if I type Fré. prefix queries do not go thru the lucene analyzer... so if this is your use case for this field I would not recommend stemming it! P.S. you might want to consider using something more efficient for search-as-you-type, lucene's wildcards are slow and I think you would find edge-ngrams much faster. ---
**Author:** ![Alexandre\_Heimburger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alexandre_heimburger/32/2941_2.png) [@Alexandre\_Heimburger](https://discuss.elastic.co/u/Alexandre_Heimburger)\ **Post date:** [June 29, 2011, 6:35am UTC](https://discuss.elastic.co/t/probleme-with-french-stemmer/4726/3 "2011-06-29T06:35:43Z")
Thx Robert. Can you explain how to use the edge-ngrams in my context ? On Tue, Jun 28, 2011 at 9:31 PM, Robert Muir [rcmuir@gmail.com](mailto:rcmuir@gmail.com) wrote: > On Tue, Jun 28, 2011 at 2:53 PM, alheim [alexheimburger@gmail.com](mailto:alexheimburger@gmail.com) wrote: > > > Hi, > > > > I work on a "search as you type" box. > > > > Many users are indexed. > > > > For example, when I type : Fre > > > > I should get Docteur Freud, Frédéric Durand, Jean Frérac.... all these > > names matching Fre / Fré / Frê etc.... > > > > I tried to use a custom analyzer with a light french stemmer but I can > > only get Frédéric if I type Fré. > > prefix queries do not go thru the lucene analyzer... so if this is > your use case for this field I would not recommend stemming it! > > P.S. you might want to consider using something more efficient for > search-as-you-type, lucene's wildcards are slow and I think you would > find edge-ngrams much faster. -- Alexandre Heimburger R&D Manager blueKiwi Software tel : +33687880997 email : [ahb@bluekiwi-software.com](mailto:ahb@bluekiwi-software.com) adress : 93 rue Vieille du Temple, 75003 Paris What is blueKiwi? blueKiwi - the first Enterprise Social Software Suite in the world building professional networks on conversations and relationships - helps large organizations increase their productivity, foster innovations and boost people satisfaction. ---
**Author:** ![Alexandre\_Heimburger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alexandre_heimburger/32/2941_2.png) [@Alexandre\_Heimburger](https://discuss.elastic.co/u/Alexandre_Heimburger)\ **Post date:** [June 29, 2011, 7:55am UTC](https://discuss.elastic.co/t/probleme-with-french-stemmer/4726/4 "2011-06-29T07:55:10Z")
Ok. The n-gram filter works fine. But I still have a problem with the stemmer. If I index "élève" : - if I search "elev", there is a result (I think elev is the stemmer representation of élève) - if I search "élève", there is no result (wierd) Here is the new gist. > On 29 juin, 08:35, Alexandre Heimburger [alexheimbur...@gmail.com](mailto:alexheimbur...@gmail.com) wrote: > Thx Robert. Can you explain how to use the edge-ngrams in my context ? > > On Tue, Jun 28, 2011 at 9:31 PM, Robert Muir [rcm...@gmail.com](mailto:rcm...@gmail.com) wrote: > > > On Tue, Jun 28, 2011 at 2:53 PM, alheim [alexheimbur...@gmail.com](mailto:alexheimbur...@gmail.com) wrote: > > > > > Hi, > > > > I work on a "search as you type" box. > > > > Many users are indexed. > > > > For example, when I type : Fre > > > > I should get Docteur Freud, Frédéric Durand, Jean Frérac.... all these > > > names matching Fre / Fré / Frê etc.... > > > > I tried to use a custom analyzer with a light french stemmer but I can > > > only get Frédéric if I type Fré. > > > prefix queries do not go thru the lucene analyzer... so if this is > > your use case for this field I would not recommend stemming it! > > > P.S. you might want to consider using something more efficient for > > search-as-you-type, lucene's wildcards are slow and I think you would > > find edge-ngrams much faster. > > -- > Alexandre Heimburger > R&D Manager > blueKiwi Software > tel : +33687880997 > email : [a...@bluekiwi-software.com](mailto:a...@bluekiwi-software.com) > adress : 93 rue Vieille du Temple, 75003 Paris > > What is blueKiwi? blueKiwi - the first Enterprise Social Software Suite in > the world building professional networks on conversations and relationships > > - helps large organizations increase their productivity, foster innovations > and boost people satisfaction. ---
**Author:** ![rmuir](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rmuir/32/44949_2.png) [@rmuir](https://discuss.elastic.co/u/rmuir)\ **Post date:** [June 29, 2011, 8:16am UTC](https://discuss.elastic.co/t/probleme-with-french-stemmer/4726/5 "2011-06-29T08:16:42Z")
On Wed, Jun 29, 2011 at 3:55 AM, alheim [alexheimburger@gmail.com](mailto:alexheimburger@gmail.com) wrote: > Ok. The n-gram filter works fine. > > But I still have a problem with the stemmer. > > If I index "élève" : > > - if I search "elev", there is a result (I think elev is the stemmer > representation of élève) > - if I search "élève", there is no result (wierd) > > Here is the new gist. > > [Stemmer issue · GitHub](https://gist.github.com/98fccd76d8b4b1b1f0b1) why do you still want the stemmer? It does not make sense to me for autocomplete, so I would remove it! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 4:02am UTC](https://discuss.elastic.co/t/probleme-with-french-stemmer/4726/6 "2017-07-06T04:02:20Z")