34 lines
887 B
Go
34 lines
887 B
Go
package metric
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import (
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"knowlege-lsxd/internal/types"
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)
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// RecallMetric calculates recall for retrieval evaluation
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type RecallMetric struct{}
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// NewRecallMetric creates a new RecallMetric instance
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func NewRecallMetric() *RecallMetric {
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return &RecallMetric{}
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}
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// Compute calculates the recall score
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func (r *RecallMetric) Compute(metricInput *types.MetricInput) float64 {
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// Get ground truth and predicted IDs
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gts := metricInput.RetrievalGT
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ids := metricInput.RetrievalIDs
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// Convert ground truth to sets for efficient lookup
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gtSets := SliceMap(gts, ToSet)
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// Count total hits across all relevant documents
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ahit := Fold(gtSets, 0, func(a int, b map[int]struct{}) int { return a + Hit(ids, b) })
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// Handle case with no ground truth
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if len(gtSets) == 0 {
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return 0.0
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}
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// Recall = total hits / total relevant documents
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return float64(ahit) / float64(len(gtSets))
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}
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