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webrtc/rtc_base/numerics
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Yves Gerey 890f62b8fe Provide robust and efficient variance computation for online statistics. 
This CL implements Welford's algorithm for a
numerically stable computation of the variance.
This implementation is plugged in SamplesStatsCounter class (adapter pattern).

A 'NumericalStability' unit test has been added,
whose previous implementation of SamplesStatsCounter failed to pass.

Follow-up CLs will factorize more occurences of duplicated and misbehaved
computations.

Bug: webrtc:10412
Change-Id: Id807c3d34e9c780fb1cbd769d30b655c575c88ac
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/131394
Commit-Queue: Yves Gerey <yvesg@google.com>
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27547}
2019-04-10 16:27:57 +00:00
..
exp_filter.cc Use std::pow in rtc_base/numerics. 2019-03-20 13:02:15 +00:00
exp_filter.h Fixing WebRTC after moving from src/webrtc to src/ 2017-09-15 05:02:56 +00:00
exp_filter_unittest.cc Use std::pow in rtc_base/numerics. 2019-03-20 13:02:15 +00:00
histogram_percentile_counter.cc Replace rtc::Optional with absl::optional in rtc_base 2018-06-21 11:23:40 +00:00
histogram_percentile_counter.h [Cleanup] Add missing #include. Remove useless ones. IWYU part 2. 2018-11-28 18:25:07 +00:00
histogram_percentile_counter_unittest.cc [Cleanup] Add missing #include. Remove useless ones. IWYU part 2. 2018-11-28 18:25:07 +00:00
math_utils.h Provide robust and efficient variance computation for online statistics. 2019-04-10 16:27:57 +00:00
mod_ops.h [Cleanup] Add missing #include. Remove useless ones. IWYU part 2. 2018-11-28 18:25:07 +00:00
mod_ops_unittest.cc [Cleanup] Add missing #include. Remove useless ones. IWYU part 2. 2018-11-28 18:25:07 +00:00
moving_average.cc Move MovingAverage to rtc_base/numerics and update it. 2018-11-05 13:02:29 +00:00
moving_average.h [Cleanup] Add missing #include. Remove useless ones. IWYU part 2. 2018-11-28 18:25:07 +00:00
moving_average_unittest.cc Move MovingAverage to rtc_base/numerics and update it. 2018-11-05 13:02:29 +00:00
moving_max_counter.h (4) Rename files to snake_case: update BUILD.gn, include paths, header guards, and DEPS entries 2019-01-11 17:11:39 +00:00
moving_max_counter_unittest.cc Optional: Use nullopt and implicit construction in /rtc_base 2017-11-27 10:17:52 +00:00
moving_median_filter.h (4) Rename files to snake_case: update BUILD.gn, include paths, header guards, and DEPS entries 2019-01-11 17:11:39 +00:00
moving_median_filter_unittest.cc [Cleanup] Add missing #include. Remove useless ones. IWYU part 2. 2018-11-28 18:25:07 +00:00
percentile_filter.h [Cleanup] Add missing #include. Remove useless ones. IWYU part 2. 2018-11-28 18:25:07 +00:00
percentile_filter_unittest.cc Use Abseil container algorithms in rtc_base/ 2019-03-25 22:08:06 +00:00
running_statistics.h Provide robust and efficient variance computation for online statistics. 2019-04-10 16:27:57 +00:00
running_statistics_unittest.cc Provide robust and efficient variance computation for online statistics. 2019-04-10 16:27:57 +00:00
safe_compare.h Move some numeric utility code from rtc_base/ to rtc_base/numerics/ 2017-11-22 11:21:47 +00:00
safe_compare_unittest.cc Move some numeric utility code from rtc_base/ to rtc_base/numerics/ 2017-11-22 11:21:47 +00:00
safe_conversions.h Move some numeric utility code from rtc_base/ to rtc_base/numerics/ 2017-11-22 11:21:47 +00:00
safe_conversions_impl.h Move some numeric utility code from rtc_base/ to rtc_base/numerics/ 2017-11-22 11:21:47 +00:00
safe_minmax.h Fix typo in SafeClamp docs 2019-01-30 12:47:20 +00:00
safe_minmax_unittest.cc Move some numeric utility code from rtc_base/ to rtc_base/numerics/ 2017-11-22 11:21:47 +00:00
sample_counter.cc Expose video freeze metrics in GetStats. 2019-02-04 09:58:08 +00:00
sample_counter.h Expose video freeze metrics in GetStats. 2019-02-04 09:58:08 +00:00
sample_counter_unittest.cc Fully qualify googletest symbols. 2019-04-09 17:18:20 +00:00
samples_stats_counter.cc Provide robust and efficient variance computation for online statistics. 2019-04-10 16:27:57 +00:00
samples_stats_counter.h Provide robust and efficient variance computation for online statistics. 2019-04-10 16:27:57 +00:00
samples_stats_counter_unittest.cc Provide robust and efficient variance computation for online statistics. 2019-04-10 16:27:57 +00:00
sequence_number_util.h Reland "SeqNumUnwrapper::Unwrap now returns int64_t instead of uint64_t." 2019-03-19 17:02:27 +00:00
sequence_number_util_unittest.cc Reland "SeqNumUnwrapper::Unwrap now returns int64_t instead of uint64_t." 2019-03-19 17:02:27 +00:00