# Difference between revisions of "File:Recall metric.jpg"

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− | {{Fig|'''[[Glossary:R-Metric|R-Metric]]''' graph demonstrates superiority of [https://supermemo.guru/wiki/Algorithm_SM- | + | {{Fig|'''[[Glossary:R-Metric|R-Metric]]''' graph demonstrates superiority of [https://supermemo.guru/wiki/Algorithm_SM-18 Algorithm SM-18] over the old [https://supermemo.guru/wiki/Algorithm_SM-15 Algorithm SM-15] for the presented [[Glossary:Collection|collection]] used in the testing period of over 3 years dating back to Apr 2, 2015. It was plotted using 10,699 data points (i.e. repetition cases with data from both algorithms), and smoothed up to show the trends. One spot beneath the line of 0 at the vertical axis (<code>R-metric<0</code>) corresponds with a moment in time when the previous version of the algorithm appeared superior (in this case, due to a small sample of repetitions). Some positive and negative trends correspond with changes in the algorithm as data were collected in the new algorithm's testing period. A gradual increase in the metric in the months Feb-May 2016, might be a statistical aberration, or it might be the result of new interval values and a bigger R-metric for [[Glossary:Interval|intervals]] departing from the optimum used in earlier SuperMemos. The latter interpretation might suggest that the benefits of [https://supermemo.guru/wiki/Algorithm_SM-18 Algorithm SM-18] can gradually increase over time.}} |

## Revision as of 19:49, 12 April 2019

Figure:R-Metricgraph demonstrates superiority of Algorithm SM-18 over the old Algorithm SM-15 for the presented collection used in the testing period of over 3 years dating back to Apr 2, 2015. It was plotted using 10,699 data points (i.e. repetition cases with data from both algorithms), and smoothed up to show the trends. One spot beneath the line of 0 at the vertical axis (`R-metric<0`

) corresponds with a moment in time when the previous version of the algorithm appeared superior (in this case, due to a small sample of repetitions). Some positive and negative trends correspond with changes in the algorithm as data were collected in the new algorithm's testing period. A gradual increase in the metric in the months Feb-May 2016, might be a statistical aberration, or it might be the result of new interval values and a bigger R-metric for intervals departing from the optimum used in earlier SuperMemos. The latter interpretation might suggest that the benefits of Algorithm SM-18 can gradually increase over time.

## File history

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current | 19:43, 12 April 2019 | 1,549 × 918 (430 KB) | SuperMemoHelp (talk | contribs) | ||

09:37, 20 January 2018 | 1,321 × 742 (240 KB) | SuperMemoHelp (talk | contribs) | incompatible with the description | ||

16:20, 14 December 2017 | 1,209 × 904 (175 KB) | SuperMemoHelp (talk | contribs) | |||

13:15, 8 May 2016 | 1,321 × 742 (240 KB) | SuperMemoHelp (talk | contribs) | |||

14:41, 2 April 2016 | 1,207 × 821 (180 KB) | SuperMemoHelp (talk | contribs) |

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