How to use es analyzer for compound words?

sebninse · October 22, 2014, 2:09pm

here is an example for an index with some documents containing dutch
compound words.

gist.github.com

https://gist.github.com/herrvonb/0a247aa7dfd0d155b418

es_dutch_stems.sh

#!/bin/bash
curl -XDELETE localhost:9200/foo

curl -XPUT localhost:9200/foo -d '{
"settings": {
    "number_of_replicas": 0,
    "number_of_shards": 1,
    "analysis": {
      "filter": {
        "dutch_stemmer": {

This file has been truncated. show original

"plaatstaal" is a dutch compound word. So after the custom analyzer "dutch"
has been assigned to the field test I expected a search for "plaat" would
return at least one hit.
That's what i get:

search for plaat
{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"failed" : 0
},
"hits" : {
"total" : 0,
"max_score" : null,
"hits" : [ ]
}
}

Any idea why this is not working?
Thanks for your help

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jprante · October 22, 2014, 4:08pm

For decompounding, you need a more sophisticated algorithm, like in my
plugin

which provides decompounding for german words.

Jörg

On Wed, Oct 22, 2014 at 4:09 PM, sebninse sebninse@gmail.com wrote:

here is an example for an index with some documents containing dutch
compound words.
Creating new elasticsearch index, with custom analyzer: stemming dutch compound words, finally run query · GitHub

"plaatstaal" is a dutch compound word. So after the custom analyzer
"dutch" has been assigned to the field test I expected a search for "plaat"
would return at least one hit.
That's what i get:

search for plaat
{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"failed" : 0
},
"hits" : {
"total" : 0,
"max_score" : null,
"hits" :
}
}

Any idea why this is not working?
Thanks for your help

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