demo D268

ROC curve

See how well a score separates two outcomes, the curve bowing away from a coin toss

type: 'roc', score, label, positive

Building…

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The configuration

'chart-types-roc': () => ({
  rows: [], config: {},
  foot: ['the curve bows toward the top left as the score sorts better', 'the diagonal is a coin toss'],
  mount: mountGridCharts({
    rows: scoreRows(),
    columns: [
      { field: 'score', title: 'Score', type: 'number', format: { decimals: 3 } },
      { field: 'fraud', title: 'Actually fraud', type: 'number', filter: { type: 'set' } },
    ],
    columnsPer: 1, chartHeight: 360,
    chartTypeModules: ['roc'],
    charts: [{ type: 'roc', score: 'score', label: 'fraud', positive: 1, title: 'How well the score separates fraud' }],
  }),
}),