How to parse strings using elasticsearh
up vote
0
down vote
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I want to use ElasticSearch to separate tokens in a string ,lets say I have a string I want to extract a name from:
John Smith had a little lamb
My idea is to create several versions of it, search them on a name index and get the one with the biggest score:
John
John Smith
John Smith had
....
What's the best way to do that with ElasticSearch?
Edit:
I want something like this:
//this combination is not right, gives me a low score
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
],
}
}
}
//this combination is right, gives me a high score
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
{ "match" : { "name" : "Smith" } },
],
}
}
}
//this one also gives me a low score, stop searching here
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
{ "match" : { "name" : "Smith" } },
{ "match" : { "name" : "had" } },
],
}
}
}
How I can do this process in just one query?
elasticsearch asked Nov 20 at 16:42
Vitor Souza
11
add a comment |
up vote
0
down vote
favorite
I want to use ElasticSearch to separate tokens in a string ,lets say I have a string I want to extract a name from:
John Smith had a little lamb
My idea is to create several versions of it, search them on a name index and get the one with the biggest score:
John
John Smith
John Smith had
....
What's the best way to do that with ElasticSearch?
Edit:
I want something like this:
//this combination is not right, gives me a low score
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
],
}
}
}
//this combination is right, gives me a high score
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
{ "match" : { "name" : "Smith" } },
],
}
}
}
//this one also gives me a low score, stop searching here
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
{ "match" : { "name" : "Smith" } },
{ "match" : { "name" : "had" } },
],
}
}
}
How I can do this process in just one query?
elasticsearch asked Nov 20 at 16:42
Vitor Souza
11
What have you tried so far?
– common sense
Nov 20 at 16:56
Im running a bool query for each possible sentence, i was wondering if I can do the whole thing on a single query
– Vitor Souza
Nov 20 at 18:18
Can you include the mapping of your index? Can you include the bool query you tried in your question?
– Tim
Nov 20 at 20:53
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I want to use ElasticSearch to separate tokens in a string ,lets say I have a string I want to extract a name from:
John Smith had a little lamb
My idea is to create several versions of it, search them on a name index and get the one with the biggest score:
John
John Smith
John Smith had
....
What's the best way to do that with ElasticSearch?
Edit:
I want something like this:
//this combination is not right, gives me a low score
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
],
}
}
}
//this combination is right, gives me a high score
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
{ "match" : { "name" : "Smith" } },
],
}
}
}
//this one also gives me a low score, stop searching here
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
{ "match" : { "name" : "Smith" } },
{ "match" : { "name" : "had" } },
],
}
}
}
How I can do this process in just one query?
elasticsearch asked Nov 20 at 16:42
Vitor Souza
11
I want to use ElasticSearch to separate tokens in a string ,lets say I have a string I want to extract a name from:
John Smith had a little lamb
My idea is to create several versions of it, search them on a name index and get the one with the biggest score:
John
John Smith
John Smith had
....
What's the best way to do that with ElasticSearch?
Edit:
I want something like this:
//this combination is not right, gives me a low score
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
],
}
}
}
//this combination is right, gives me a high score
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
{ "match" : { "name" : "Smith" } },
],
}
}
}
//this one also gives me a low score, stop searching here
{
"query": {
"bool" : {
"should" : [
{ "match" : { "name" : "John" } },
{ "match" : { "name" : "Smith" } },
{ "match" : { "name" : "had" } },
],
}
}
}
How I can do this process in just one query?
elasticsearch elasticsearch asked Nov 20 at 16:42
Vitor Souza
11
asked Nov 20 at 16:42
Vitor Souza
11
edited Nov 21 at 16:25
asked Nov 20 at 16:42
Vitor Souza
11
asked Nov 20 at 16:42
Vitor Souza
11
asked Nov 20 at 16:42
Vitor Souza
11
11
What have you tried so far?
– common sense
Nov 20 at 16:56
Im running a bool query for each possible sentence, i was wondering if I can do the whole thing on a single query
– Vitor Souza
Nov 20 at 18:18
Can you include the mapping of your index? Can you include the bool query you tried in your question?
– Tim
Nov 20 at 20:53
add a comment |
What have you tried so far?
– common sense
Nov 20 at 16:56
Im running a bool query for each possible sentence, i was wondering if I can do the whole thing on a single query
– Vitor Souza
Nov 20 at 18:18
Can you include the mapping of your index? Can you include the bool query you tried in your question?
– Tim
Nov 20 at 20:53
What have you tried so far?
– common sense
Nov 20 at 16:56
What have you tried so far?
– common sense
Nov 20 at 16:56
Im running a bool query for each possible sentence, i was wondering if I can do the whole thing on a single query
– Vitor Souza
Nov 20 at 18:18
Im running a bool query for each possible sentence, i was wondering if I can do the whole thing on a single query
– Vitor Souza
Nov 20 at 18:18
Can you include the mapping of your index? Can you include the bool query you tried in your question?
– Tim
Nov 20 at 20:53
Can you include the mapping of your index? Can you include the bool query you tried in your question?
– Tim
Nov 20 at 20:53
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
I am not very clear how you would extract a name from this document. Surely not something elasticsearch can do and will need to come from some logic...
Is the name categorize by words which always start with upper case letter ? If so use whitespace analyzer as english analyzer would lowercase and stem those terms
Regarding score, I'm not clear how this will help you... What score higher is terms which are least common - lamb might be less common in your index than term John or Smith but "little" might be more common, so I don't know how this will help you know that name is "John Smith"
Or are you saying you are looking for set of two tokens/words...
Maybe question here is around clarifying what you want to achieve and then you can check how ES can do it
answered Nov 20 at 21:53
Julien
714
I updated my answer
– Vitor Souza
Nov 21 at 16:25
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
I am not very clear how you would extract a name from this document. Surely not something elasticsearch can do and will need to come from some logic...
Is the name categorize by words which always start with upper case letter ? If so use whitespace analyzer as english analyzer would lowercase and stem those terms
Regarding score, I'm not clear how this will help you... What score higher is terms which are least common - lamb might be less common in your index than term John or Smith but "little" might be more common, so I don't know how this will help you know that name is "John Smith"
Or are you saying you are looking for set of two tokens/words...
Maybe question here is around clarifying what you want to achieve and then you can check how ES can do it
answered Nov 20 at 21:53
Julien
714
I updated my answer
– Vitor Souza
Nov 21 at 16:25
add a comment |
up vote
0
down vote
I am not very clear how you would extract a name from this document. Surely not something elasticsearch can do and will need to come from some logic...
Is the name categorize by words which always start with upper case letter ? If so use whitespace analyzer as english analyzer would lowercase and stem those terms
Regarding score, I'm not clear how this will help you... What score higher is terms which are least common - lamb might be less common in your index than term John or Smith but "little" might be more common, so I don't know how this will help you know that name is "John Smith"
Or are you saying you are looking for set of two tokens/words...
Maybe question here is around clarifying what you want to achieve and then you can check how ES can do it
answered Nov 20 at 21:53
Julien
714
I updated my answer
– Vitor Souza
Nov 21 at 16:25
add a comment |
up vote
0
down vote
up vote
0
down vote
I am not very clear how you would extract a name from this document. Surely not something elasticsearch can do and will need to come from some logic...
Is the name categorize by words which always start with upper case letter ? If so use whitespace analyzer as english analyzer would lowercase and stem those terms
Regarding score, I'm not clear how this will help you... What score higher is terms which are least common - lamb might be less common in your index than term John or Smith but "little" might be more common, so I don't know how this will help you know that name is "John Smith"
Or are you saying you are looking for set of two tokens/words...
Maybe question here is around clarifying what you want to achieve and then you can check how ES can do it
answered Nov 20 at 21:53
Julien
714
I am not very clear how you would extract a name from this document. Surely not something elasticsearch can do and will need to come from some logic...
Is the name categorize by words which always start with upper case letter ? If so use whitespace analyzer as english analyzer would lowercase and stem those terms
Regarding score, I'm not clear how this will help you... What score higher is terms which are least common - lamb might be less common in your index than term John or Smith but "little" might be more common, so I don't know how this will help you know that name is "John Smith"
Or are you saying you are looking for set of two tokens/words...
Maybe question here is around clarifying what you want to achieve and then you can check how ES can do it
answered Nov 20 at 21:53
Julien
714
answered Nov 20 at 21:53
Julien
714
answered Nov 20 at 21:53
Julien
714
answered Nov 20 at 21:53
Julien
714
714
I updated my answer
– Vitor Souza
Nov 21 at 16:25
add a comment |
I updated my answer
– Vitor Souza
Nov 21 at 16:25
I updated my answer
– Vitor Souza
Nov 21 at 16:25
I updated my answer
– Vitor Souza
Nov 21 at 16:25
add a comment |
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What have you tried so far?
– common sense
Nov 20 at 16:56
Im running a bool query for each possible sentence, i was wondering if I can do the whole thing on a single query
– Vitor Souza
Nov 20 at 18:18
Can you include the mapping of your index? Can you include the bool query you tried in your question?
– Tim
Nov 20 at 20:53