chore(bench): exclude rides with low moving time ratio

1 files changed, 10 insertions, 3 deletions

diff --git a/cli/cli.go b/cli/cli.go
index cac29ec..37f64bb 100644
--- a/cli/cli.go
+++ b/cli/cli.go
@@ -32,7 +32,10 @@ var (
 	backtest    = flag.Bool("backtest", false, "run data benchmarks comparing computed values against stored reference values")
 )
 
-const backtestMinimumDistanceM = 10_000
+const (
+	backtestMinimumDistanceM   = 10_000
+	backtestMinimumMovingRatio = 0.8
+)
 
 func Run(db *sql.DB, configPath string, appConfig config.Config) {
 	switch {
@@ -134,12 +137,16 @@ func runBacktest(db *sql.DB) error {
 		fmt.Fprintf(table, "p%g\t%.1f\n", p, distribution[p])
 	}
 	table.Flush()
-	slog.Info("Moving time backtest", "rides", len(samples), "min_distance_m", backtestMinimumDistanceM, "mean_err_pct", math.Round(meanAbsErr(absErrors)*10)/10, "stderr_pct", math.Round(stdErrAbsErr(absErrors)*10)/10)
+	slog.Info("Moving time backtest", "rides", len(samples), "min_distance_m", backtestMinimumDistanceM, "min_moving_ratio", backtestMinimumMovingRatio, "mean_err_pct", math.Round(meanAbsErr(absErrors)*10)/10, "stderr_pct", math.Round(stdErrAbsErr(absErrors)*10)/10)
 	return nil
 }
 
 func isBacktestEligible(item rides.Ride) bool {
-	return item.GPXPath != "" && item.DistanceM >= backtestMinimumDistanceM && item.MovingTimeS > 0
+	return item.GPXPath != "" &&
+		item.DistanceM >= backtestMinimumDistanceM &&
+		item.MovingTimeS > 0 &&
+		item.ElapsedTimeS > 0 &&
+		float64(item.MovingTimeS)/float64(item.ElapsedTimeS) >= backtestMinimumMovingRatio
 }
 
 func meanAbsErr(absErrors []float64) float64 {