What is the algorithms of EntityRuler or PhraseMatcher ?

[zhangweida2080]

I am using the PhraseMatcher and EntityRuler, but what is the matching algorithm under these two modules?
It likes a black-box.
However, for research, I need to modify them or to understand the implementation algorithm for answering questions.
Is it using forward Maximum Matching or not ?
Thanks a lot.

[polm]

spaCy is open source, so actually it's not like a black box, and you can look at the source for all the parts. For example the PhraseMatcher source is in this directory.

Forward Maximum Matching is a method for text segmentation, but the PhraseMatcher isn't performing text segmentation, it's just labelling text.