CTC — Connectionist Temporal Classification

Fact

A training goal for labels when input and output timing does not match.

In Plain Words

CTC is like a drive-thru worker hearing a muffled burger order. It does not need each word on a stopwatch to get the order right.

It is common in speech-to-text. It lets models train when sounds and words do not line up neatly.

Related Concepts

• Speech-to-Text
• Sequence Modeling
• Long Short-Term Memory
• Classification Task

STT
CTC is one classic way to train speech-to-text.

Sequence Modeling
CTC handles tasks where input and output do not line up neatly.

LSTM
Before Transformers became common, CTC often worked with LSTM speech models.

Classification
CTC is still classification, but the labels run across time.