Assemble exemplar sets
Collect a small number of representative texts per class and include realistic noisy or out-of-distribution inputs for robust evaluation.
Perform few-shot text classification. Evaluate with scarce labels.
Few-shot text classification aims to label new texts after seeing only a few examples per class. Key challenges include choosing representations that generalise from few exemplars, handling label imbalance, and surfacing uncertain predictions for human review.
Learning concept · Not a validated service
Few-shot text classification aims to label new texts after seeing only a few examples per class. Key challenges include choosing representations that generalise from few exemplars, handling label imbalance, and surfacing uncertain predictions for human review.
A proposed application: let compliance or support teams label a few exemplars for a new category and receive automatic suggestions for incoming texts, with an interface for a human reviewer to confirm or correct predictions. This extension is not implemented in the supplied starter.
Collect a small number of representative texts per class and include realistic noisy or out-of-distribution inputs for robust evaluation.
Compare TF-IDF, pre-trained transformer embeddings and nearest-prototype matching to see which generalises with few examples.
Implement prototype, metric-learning, or prompt-based classifiers that predict from class exemplars rather than large labelled sets.
Report per-class precision/recall and calibration; inspect low-confidence cases and provide a human-review workflow for corrections.
The supplied starter creates a TF-IDF + LogisticRegression pipeline, trains it on six hand-written sentences with binary labels, prints a classification report on a small test split, and shows one sample prediction.
model = Pipeline(
steps=[
("tfidf", TfidfVectorizer(ngram_range=(1, 2), min_df=1)),
("classifier", LogisticRegression(max_iter=1000)),
]
)
model.fit(X_train, y_train)
predictions = model.predict(X_test)
print(PROJECT_NAME)
print(classification_report(y_test, predictions, zero_division=0))
print("Sample prediction:", model.predict(["Please summarize this policy document."])[0])The starter does not implement few-shot algorithms (no prototype models, meta-learning, prompt-based or embedding nearest-neighbour logic). It trains a standard TF-IDF + logistic-regression baseline on six examples, which is too small and unrepresentative to validate few-shot performance or production behaviour.
A proposed extension: replace the toy data with domain documents, compute transformer embeddings, implement a prototype-based classifier that accepts user-supplied exemplars at inference, and expose this as an API with a human-review UI and confidence thresholds.
This is a potential application pathway, not a delivered product. The supplied starter does not implement this service or validate it with real users.
Networkers Home runs this topic inside its AI Engineer Course, with placement support and hands-on labs.