mirror of
https://github.com/explosion/spaCy.git
synced 2024-11-14 21:57:15 +03:00
39 lines
1.7 KiB
Markdown
39 lines
1.7 KiB
Markdown
|
A named entity is a "real-world object" that's assigned a name – for example, a
|
|||
|
|
person, a country, a product or a book title. spaCy can **recognize**
|
|||
|
|
[various types](/api/annotation#named-entities) of named entities in a document,
|
|||
|
|
by asking the model for a **prediction**. Because models are statistical and
|
|||
|
|
strongly depend on the examples they were trained on, this doesn't always work
|
|||
|
|
_perfectly_ and might need some tuning later, depending on your use case.
|
|||
|
|
|
|||
|
|
Named entities are available as the `ents` property of a `Doc`:
|
|||
|
|
|
|||
|
|
```python
|
|||
|
|
### {executable="true"}
|
|||
|
|
import spacy
|
|||
|
|
|
|||
|
|
nlp = spacy.load("en_core_web_sm")
|
|||
|
|
doc = nlp(u"Apple is looking at buying U.K. startup for $1 billion")
|
|||
|
|
|
|||
|
|
for ent in doc.ents:
|
|||
|
|
print(ent.text, ent.start_char, ent.end_char, ent.label_)
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
> - **Text:** The original entity text.
|
|||
|
|
> - **Start:** Index of start of entity in the `Doc`.
|
|||
|
|
> - **End:** Index of end of entity in the `Doc`.
|
|||
|
|
> - **LabeL:** Entity label, i.e. type.
|
|||
|
|
|
|||
|
|
| Text | Start | End | Label | Description |
|
|||
|
|
| ----------- | :---: | :-: | ------- | ---------------------------------------------------- |
|
|||
|
|
| Apple | 0 | 5 | `ORG` | Companies, agencies, institutions. |
|
|||
|
|
| U.K. | 27 | 31 | `GPE` | Geopolitical entity, i.e. countries, cities, states. |
|
|||
|
|
| \$1 billion | 44 | 54 | `MONEY` | Monetary values, including unit. |
|
|||
|
|
|
|||
|
|
Using spaCy's built-in [displaCy visualizer](/usage/visualizers), here's what
|
|||
|
|
our example sentence and its named entities look like:
|
|||
|
|
|
|||
|
|
import DisplaCyLongHtml from 'images/displacy-long.html'; import { Iframe } from
|
|||
|
|
'components/embed'
|
|||
|
|
|
|||
|
|
<Iframe title="displaCy visualization of dependencies and entities" html={DisplaCyLongHtml} height={450} />
|