infer_language
Detect the language used for each text in the input column.
Each language will be represented by its ISO 639-1 language code, such as “en”, “es”, “it” for English, Spanish and Italian respectively.
Usage
The following example shows how the step can be used in a recipe.
In most cases no special configuration should be necessary, so simply
Inputs & Outputs
The following are the inputs expected by the step and the outputs it produces. These are generally
columns (ds.first_name), datasets (ds or ds[["first_name", "last_name"]]) or models (referenced
by name e.g. "churn-clf").
Configuration
The following parameters can be used to configure the behaviour of the step by including them in
a json object as the last “input” to the step, i.e. step(..., {"param": "value", ...}) -> (output).
Which model to use to detect languages. Select from one of four model types (corresponding to specific Python libraries):
"lingua": https://github.com/pemistahl/lingua-py"fasttext": https://fasttext.cc/docs/en/language-identification.html"langdetect": https://github.com/Mimino666/langdetect"langid": https://github.com/saffsd/langid.py.
Values must be one of the following:
linguafasttextlangdetectlangid
Whether to lowercase texts before detection. Some models may be more sensitive than others if texts are in capital letters only, for example.
Minimum probability to assign a language for a particular text. If the model used to infer the language is less sure about a language than this, the corresponding text will be assigned the “undefined” language (“und”). Note that a reasonable value might depend on the specific model used. Different models may produce different distributions of detection confidence.
Values must be in the following range:
Restrict which languages can be be inferred.
Can be used to limit language detection to a smaller set if necessary. By default (when
not specifying this parameter, or when setting it to true or null), we restrict this
to the languages which we have spaCy models for, because this is the most common use of
language detection in Graphext (applying the correct spaCy language model to extract keywords
e.g.).
If set to false, will allow detection of all languages supported by the selected model.
If set to a list of ISO 639-1 codes, only these languages are detected (if supported by the model).
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