Classification Pipeline
A systematic sequence of steps that automatically sorts or categorizes data—like a factory line that identifies what each item is before deciding what to do with it.

An automated workflow that processes raw data through successive stages to classify, categorize, or identify items based on learned patterns or rules. Each stage filters, transforms, or evaluates the data, passing results to the next step until a final classification is assigned. Common in astronomy, machine learning, and image analysis.
What this means in real life
An email system that scans incoming messages through spam detection, then language identification, then topic sorting—each step narrows down what the message is until it lands in the right folder.
What it isn’t
Not a single classification tool or algorithm. A pipeline is the *sequence* of multiple processing steps working together; confusing it with one classifier misses the idea that data flows through stages, each refining the result.
Commonly misused online
Often used to mean any data processing workflow, even non-sequential ones. On social media, people sometimes call any multi-step analysis a 'pipeline' without the systematic, ordered flow that defines the actual concept.