File:Recall metric.jpg: Difference between revisions

'''''Figure:''' '''[[Glossary:R-Metric|R-Metric]]''' graph demonstrates superiority of [[SuperMemo Algorithm|Algorithm SM-17]] over the old [[SuperMemo Algorithm SM-15|Algorithm SM-15]] for the presented [[Glossary:Collection|collection]] used in the testing period of 12 months before the release of SuperMemo 17. 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>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 might indicate that the benefits of [[SuperMemo Algorithm|Algorithm SM-17]] might gradually increase over time.''