Elyzer
See step-by-step how Elasticsearch custom analyzers decompose your text into tokens.
My therapist said this would be a good idea...
Doug: hi Eliza: How are you today.. What would you like to discuss? Doug: well I can't really see how my Elasticsearch analyzers work, on the inside Eliza: How do you know you can't really see how your Elasticsearch analyzers work, on the inside? Doug: cause I call _analyze, and it does the whole analyzer or just one step Eliza What other reasons might there be? Doug: I guess nobody's gotten around to making a good debugger Eliza I'm not sure I understand you fully. Doug well just keep reading this README then... Eliza Come, come, elucidate your thoughts.
Installation
Install through pip3
(ES 2.x & 5.x)
pip3 install elyzer
Usage
Give Elyzer some text and have its analyzed. See the process broken down step-by-step on the command line.
Assuming I'd created an english_bigrams custom analyzer for the index tmdb, I would run the analyzer like so
$ elyzer --es "http://localhost:9200" --index tmdb --analyzer english_bigrams "Mary had a little lamb"
TOKENIZER: standard
{1:Mary} {2:had} {3:a} {4:little} {5:lamb}
TOKEN_FILTER: standard
{1:Mary} {2:had} {3:a} {4:little} {5:lamb}
TOKEN_FILTER: lowercase
{1:mary} {2:had} {3:a} {4:little} {5:lamb}
TOKEN_FILTER: porter_stem
{1:mari} {2:had} {3:a} {4:littl} {5:lamb}
TOKEN_FILTER: bigram_filter
{1:mari had} {2:had a} {3:a littl} {4:littl lamb}
Output is each token, prefixed by the numerical position attribute in the token stream at each step.
Args
There are four required command line args:
- es: the elasticsearch host (ie http://localhost:9200)
- index: name of the index where your custom analyzer can be found
- analyzer: name of your custom analyzer
- text: the text to analyze
Shortcomings
aka "Areas for Improvement"
- Only works for custom analyzers right now (as it accesses the settings for your index)
- Attributes besides the token text and position would be handy
Who?
Created by OpenSource Connections
License
Released under Apache 2
