GitHub user ottobackwards reopened a pull request:
https://github.com/apache/metron/pull/667
METRON-1061 Add FUZZY_SCORE STELLAR function
[Apache Commons Text
Similarity](https://commons.apache.org/proper/commons-text/javadocs/api-release/org/apache/commons/text/similarity/FuzzyScore.html)
FuzzyScore :
"A matching algorithm that is similar to the searching algorithms
implemented in editors such as Sublime Text, TextMate, Atom and others.
One point is given for every matched character. Subsequent matches yield
two bonus points. A higher score indicates a higher similarity."
This PR adds FUZZY_SCORE to STELLAR, exposing the Apache Commons FuzzyScore
class functionality.
This allows for fuzzy matching of strings to queries, and composing
statements based on thresholds related to those scores.
For example:
term = "metron"
query = "metron"
```java
16 == FUZZY_SCORE(term,query,'en')
```
+1 for each match and +2 bonus for the 2nd, 3rd, 4th, 5th, and 6th matches.
This is related to
[METRON-1052](https://issues.apache.org/jira/browse/METRON-1052)
### For all changes:
- [x] Is there a JIRA ticket associated with this PR? If not one needs to
be created at [Metron
Jira](https://issues.apache.org/jira/browse/METRON/?selectedTab=com.atlassian.jira.jira-projects-plugin:summary-panel).
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number you are trying to resolve? Pay particular attention to the hyphen "-"
character.
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### For code changes:
- [ ] Have you included steps to reproduce the behavior or problem that is
being changed or addressed?
- [ ] Have you included steps or a guide to how the change may be verified
and tested manually?
- [x] Have you ensured that the full suite of tests and checks have been
executed in the root metron folder via:
```
mvn -q clean integration-test install && build_utils/verify_licenses.sh
```
- [x] Have you written or updated unit tests and or integration tests to
verify your changes?
- [x] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [] Have you verified the basic functionality of the build by building and
running locally with Vagrant full-dev environment or the equivalent?
### For documentation related changes:
- [x] Have you ensured that format looks appropriate for the output in
which it is rendered by building and verifying the site-book? If not then run
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`site-book/target/site/index.html`:
```
cd site-book
mvn site
```
#### Note:
Please ensure that once the PR is submitted, you check travis-ci for build
issues and submit an update to your PR as soon as possible.
It is also recommended that [travis-ci](https://travis-ci.org) is set up
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submitting a pull request.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ottobackwards/metron fuzzy
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/metron/pull/667.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #667
----
commit 34c9ffa97b47005ac10063a43ff1890f51c9a3cf
Author: Otto Fowler <ottobackwa...@gmail.com>
Date: 2017-07-25T12:31:18Z
add FUZZY_SCORE stellar function
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