# Search 'U2' in music catalogue **URL:** \ **Category:** Elasticsearch\ **Created:** [April 2, 2012, 1:26am UTC](https://discuss.elastic.co/t/search-u2-in-music-catalogue/7193 "2012-04-02T01:26:30Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Ales\_Kafka\_2](https://avatars.discourse-cdn.com/v4/letter/a/77aa72/32.png) [@Ales\_Kafka\_2](https://discuss.elastic.co/u/Ales_Kafka_2)\ **Post date:** [April 2, 2012, 1:26am UTC](https://discuss.elastic.co/t/search-u2-in-music-catalogue/7193/1 "2012-04-02T01:26:30Z")
Hi, I have quite a large music catalogue and I'm playing with ElasticSearch. I have already indexed my albums (properties: name (boost 5.0), genre, artist (boost 3.0), array of tracks) using lowercase tokenizer with asciifolding filter (same analyzer is used for search). Now, I would like to search for query 'U2', but it keeps returning me albums with name like 'R U Mine?' or 'Got 2 Luv U'. And I couldn't find a way to retrieve Albums with artist name 'U2' with highest score or ignore documents containing just 'U'. Is there any possibility to configure request in this sense? I have already tried disable fuzzy, and so on. But nothing seems to help. Apparently, ES perform left and right trim of Numeric characters. What should I do to make ES search exact alphanumeric phase? Thanks ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [April 2, 2012, 4:59am UTC](https://discuss.elastic.co/t/search-u2-in-music-catalogue/7193/2 "2012-04-02T04:59:28Z")
For artists, you can use a multifield mapping and apply for the second mapping of the field a keyword (+lowercase) analyzer. With a keyword analyzer, U2 won't be break in tokens. HTH David 😉 Twitter : @dadoonet / @elasticsearchfr Le 2 avr. 2012 à 03:26, Ales Kafka [ales.kafka@gmail.com](mailto:ales.kafka@gmail.com) a écrit : > Hi, > > I have quite a large music catalogue and I'm playing with > Elasticsearch. I have already indexed my albums (properties: name > (boost 5.0), genre, artist (boost 3.0), array of tracks) using > lowercase tokenizer with asciifolding filter (same analyzer is used > for search). Now, I would like to search for query 'U2', but it keeps > returning me albums with name like 'R U Mine?' or 'Got 2 Luv U'. And I > couldn't find a way to retrieve Albums with artist name 'U2' with > highest score or ignore documents containing just 'U'. Is there any > possibility to configure request in this sense? > > I have already tried disable fuzzy, and so on. But nothing seems to > help. Apparently, ES perform left and right trim of Numeric > characters. What should I do to make ES search exact alphanumeric > phase? > > Thanks ---
**Author:** ![AEvar\_Arnfjord\_Bjarm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aevar_arnfjord_bjarm/32/2746_2.png) [@AEvar\_Arnfjord\_Bjarm](https://discuss.elastic.co/u/AEvar_Arnfjord_Bjarm)\ **Post date:** [April 2, 2012, 10:53am UTC](https://discuss.elastic.co/t/search-u2-in-music-catalogue/7193/3 "2012-04-02T10:53:14Z")
On Mon, Apr 2, 2012 at 03:26, Ales Kafka [ales.kafka@gmail.com](mailto:ales.kafka@gmail.com) wrote: > I have already tried disable fuzzy, and so on. But nothing seems to > help. Apparently, ES perform left and right trim of Numeric > characters. What should I do to make ES search exact alphanumeric > phase? It doesn't do that, here's how "U2" is analyzed with the standard analyzer: $ searchanalyze -t U2 -a standard We analyzed with as \<{ 'tokens' =\> [ { 'end\_offset' =\> 2, 'position' =\> 1, 'start\_offset' =\> 0, 'token' =\> 'u2', 'type' =\> '' } ] } > ---
**Author:** ![Ales\_Kafka\_2](https://avatars.discourse-cdn.com/v4/letter/a/77aa72/32.png) [@Ales\_Kafka\_2](https://discuss.elastic.co/u/Ales_Kafka_2)\ **Post date:** [April 2, 2012, 12:31pm UTC](https://discuss.elastic.co/t/search-u2-in-music-catalogue/7193/4 "2012-04-02T12:31:28Z")
You are right. Standard analyzer analysis word 'U2' correctly as one token as was intended. Now, I have found two other problem, I wish to capture. Even standard analyzer split query 'Ke$ha' into tokens 'ke' and 'ha'. Same problem with query 'p!nk'. Is there any way to adjust standard analyzer not to split these kind of queries? I assume that I could use 'whitespace' tokenizer, but I would loose power in other type of queries like '1998/1999' which wouldn't have been split into two years. On Monday, April 2, 2012 12:53:14 PM UTC+2, Ævar Arnfjörð Bjarmason wrote: > On Mon, Apr 2, 2012 at 03:26, Ales Kafka wrote : It doesn't do that, here's how "U2" is analyzed with the standard analyzer: > $ searchanalyze -t U2 -a standard > We analyzed with as \<{ > 'tokens' =\> [ > { > 'end\_offset' =\> 2, > 'position' =\> 1, > 'start\_offset' =\> 0, > 'token' =\> 'u2', > 'type' =\> '' > } > ] > } > > > On Monday, April 2, 2012 12:53:14 PM UTC+2, Ævar Arnfjörð Bjarmason wrote: > On Mon, Apr 2, 2012 at 03:26, Ales Kafka wrote: > > > I have already tried disable fuzzy, and so on. But nothing seems to > > help. Apparently, ES perform left and right trim of Numeric > > characters. What should I do to make ES search exact alphanumeric > > phase? > > It doesn't do that, here's how "U2" is analyzed with the standard analyzer: > > $ searchanalyze -t U2 -a standard > We analyzed with as \<{ > 'tokens' =\> [ > { > 'end\_offset' =\> 2, > 'position' =\> 1, > 'start\_offset' =\> 0, > 'token' =\> 'u2', > 'type' =\> '' > } > ] > } > > > ---
**Author:** ![Greg\_Brown](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/greg_brown/32/1373_2.png) [@Greg\_Brown](https://discuss.elastic.co/u/Greg_Brown)\ **Post date:** [April 2, 2012, 4:54pm UTC](https://discuss.elastic.co/t/search-u2-in-music-catalogue/7193/5 "2012-04-02T16:54:48Z")
> Now, I have found two other problem, I wish to capture. Even standard > analyzer split query 'Ke$ha' into tokens 'ke' and 'ha'. Same problem with > query 'p!nk'. Is there any way to adjust standard analyzer not to split > these kind of queries? You could build a custom set of synonyms based on artist names that you pull automatically from DBpedia or some other source. This would both allow you to use different names as synonyms, but all prevent certain character sequences from be broken apart if they have a symbol in them. For instance I am considering the following as all being the same token: plug-in, plug in, plugin, plug-ins, plug ins, plugins ---
**Author:** ![Ales\_Kafka\_2](https://avatars.discourse-cdn.com/v4/letter/a/77aa72/32.png) [@Ales\_Kafka\_2](https://discuss.elastic.co/u/Ales_Kafka_2)\ **Post date:** [April 3, 2012, 2:17pm UTC](https://discuss.elastic.co/t/search-u2-in-music-catalogue/7193/6 "2012-04-03T14:17:41Z")
Thanks for interesting idea. But I go through topics that cover synonyms in ES and I am not sure, how to implement it. As far as I understand it, standard tokenizer splits text into tokens first (i.e. 'p!nk' into 'p' and 'nk') and synonym definition (in Synonym Token Filter) ('p!nk =\> pink') couldn't be applied. But I think I could live with the default standard analyzer, since results are correct. (If default\_operation: 'AND' is used, it basically doesnt matter, whether 'p!nk' is indexed as one or two token) Dne pondělí, 2. dubna 2012 18:54:48 UTC+2 Greg Brown napsal(a): > > Now, I have found two other problem, I wish to capture. Even standard > > analyzer split query 'Ke$ha' into tokens 'ke' and 'ha'. Same problem > > with > > query 'p!nk'. Is there any way to adjust standard analyzer not to split > > these kind of queries? > > You could build a custom set of synonyms based on artist names that > you pull automatically from DBpedia or some other source. This would > both allow you to use different names as synonyms, but all prevent > certain character sequences from be broken apart if they have a symbol > in them. For instance I am considering the following as all being the > same token: > plug-in, plug in, plugin, plug-ins, plug ins, plugins ---
**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, 3:33am UTC](https://discuss.elastic.co/t/search-u2-in-music-catalogue/7193/7 "2017-07-06T03:33:51Z")