13. Core Components

These pages document the building blocks that power quantifiers and optimization workflows, grouped by role.

13.1. Building blocks of a quantifier

The pieces a matching quantifier composes — a representation, a loss, and a solver — plus the compose framework that wires them together.

• 13.1.1. Representations
• 13.1.2. Loss Functions
• 13.1.3. Solvers
• 13.1.4. Composable Quantifiers

13.2. Multiclass and output handling

How binary methods scale to multiclass problems, and how the resulting prevalence estimates are normalised and formatted.

• 13.2.1. Multiclass Quantification
• 13.2.2. Prevalence Normalization

13.3. Performance

The optional compiled acceleration behind distribution matching.

• 13.3.1. Cython Acceleration

13.4. Calibration and neural quantifiers

• 9. Calibration
• 13.4.1. Neural Quantifiers