Training a text classifier in Flair
In this section, we will be training a sentiment analysis text classification model capable of labeling text as positive or negative. Text classifier training follows a sequence of steps very similar to how sequence labeling models are trained.
The steps required to train text classifiers in Flair include the following:
- Loading a tagged corpus and computing the label dictionary map
- Loading and preparing the document embeddings
- Initializing the
TextClassifier
class - Training the model
The process, given what we covered as part of sequence labeling model training, should look very familiar – and indeed it is. Let's start by loading the data required to train the classifier.
Loading a tagged corpus
Training text classification models requires a set of text documents (typically, sentences or paragraphs) where each document is associated with one or more classification labels. To train our sentiment analysis...