102 lines
2.2 KiB
Go
102 lines
2.2 KiB
Go
// Copyright 2022 wanderer <a_mirre at utb dot cz>
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// SPDX-License-Identifier: GPL-3.0-or-later
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package stats
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import (
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"fmt"
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"os"
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"gonum.org/v1/gonum/floats"
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"gonum.org/v1/gonum/stat"
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)
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// statsRow represents the header in the table.
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type statsHdr struct {
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Algo string
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BenchFuncName string
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Dimens int
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Generations int
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Iterations int
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}
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// statsRow represents a single row in the table.
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type statsRow struct {
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Min float64
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Max float64
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Mean float64
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Median float64
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StdDev float64
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}
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// PrintStatisticTable prints to console computed statistics for current algo.
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func PrintStatisticTable(algoStats [][]Stats) {
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fmt.Fprintln(os.Stderr, "printing statistic table data (min, max, mean, median, stddev)")
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for _, singleFunc := range algoStats {
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statsSingleFunc(singleFunc)
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}
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}
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// statsSingleFunc computes statistics out of results of a single bench func.
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func statsSingleFunc(singleFuncStats []Stats) {
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var (
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// hdr is the table header as determined based on the data being dealt with.
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hdr statsHdr
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// row contains the data of the statistic properties being tracked.
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row statsRow
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)
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for _, s := range singleFuncStats {
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for _, dim := range s.BenchFuncStats {
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hdr = makeTableHdr(
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s.Algo,
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s.BenchFuncStats[0].BenchName,
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s.Dimens,
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s.Generations,
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s.Iterations,
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)
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fmt.Fprintln(os.Stderr, hdr)
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// collect the best.
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var best []float64
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for _, iter := range dim.Solution {
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last := s.Generations - 1
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best = append(best, iter.Results[last])
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}
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row.Min = floats.Min(best)
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row.Max = floats.Max(best)
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row.Mean = stat.Mean(best, nil)
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row.Median = stat.Mean(best, nil)
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row.StdDev = stat.StdDev(best, nil)
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fmt.Fprintln(os.Stderr, row)
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}
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}
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}
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// makeTableHdr fills the table header with passed information.
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// TODO(me): add checks to assert only valid inputs are passed in.
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func makeTableHdr(
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algo, benchFuncName string,
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dimens, generations, iterations int,
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) statsHdr {
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hdr := newStatsHdr()
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hdr.Algo = algo
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hdr.BenchFuncName = benchFuncName
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hdr.Dimens = dimens
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hdr.Generations = generations
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hdr.Iterations = iterations
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return *hdr
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}
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// newStatsHdr returns a pointer to a newly created statsHdr instance.
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func newStatsHdr() *statsHdr {
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return &statsHdr{}
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}
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