[Python-checkins] peps: PEP 418: Replace definitions of Accuracy, Precision and Resolution in the
victor.stinner
python-checkins at python.org
Thu Apr 19 01:12:51 CEST 2012
http://hg.python.org/peps/rev/1ea7a3edec42
changeset: 4270:1ea7a3edec42
user: Victor Stinner <victor.stinner at gmail.com>
date: Thu Apr 19 01:12:50 2012 +0200
summary:
PEP 418: Replace definitions of Accuracy, Precision and Resolution in the
glossary with Stephen J. Turnbull's definitions
files:
pep-0418.txt | 17 +++++++----------
1 files changed, 7 insertions(+), 10 deletions(-)
diff --git a/pep-0418.txt b/pep-0418.txt
--- a/pep-0418.txt
+++ b/pep-0418.txt
@@ -2,7 +2,7 @@
Title: Add monotonic time, performance counter, and process time functions
Version: $Revision$
Last-Modified: $Date$
-Author: Cameron Simpson <cs at zip.com.au>, Jim Jewett <jimjjewett at gmail.com>, Victor Stinner <victor.stinner at gmail.com>
+Author: Cameron Simpson <cs at zip.com.au>, Jim Jewett <jimjjewett at gmail.com>, Stephen J. Turnbull <stephen at xemacs.org>, Victor Stinner <victor.stinner at gmail.com>
Status: Draft
Type: Standards Track
Content-Type: text/x-rst
@@ -569,9 +569,8 @@
========
:Accuracy:
- Is the answer correct? Any clock will eventually <drift>; if a
- clock is intended to match <Civil Time>, it will need to be
- <adjusted> back to the "true" time. See also `Accuracy and precision
+ The amount of deviation of measurements by a given instrument from
+ true values. See also `Accuracy and precision
<http://en.wikipedia.org/wiki/Accuracy_and_precision>`_.
:Adjusted:
@@ -639,10 +638,8 @@
synchronization between cores.
:Precision:
- Significant Digits. What is the smallest duration that the clock
- can distinguish? This differs from <resolution> in that a
- difference greater than the minimum precision is actually
- meaningful.
+ The amount of deviation among measurements of the same physical
+ value by a single instrument.
:Process Time:
Time elapsed since the process began. It is typically measured in
@@ -657,8 +654,8 @@
ambiguity; unfortunately, that introduces different ambiguities.
:Resolution:
- Represented Digits. Note that many clocks will have a resolution
- greater than their actual <precision>.
+ The smallest difference between two physical values that results
+ in a different measurement by a given instrument.
:Slew:
A slight change to a clock's speed, usually intended to correct
--
Repository URL: http://hg.python.org/peps
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