File:Memory status.jpg: Difference between revisions
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'''''Figure:''' Changes in memory status over time for an exemplary item. The horizontal axis represents time spanning the entire repetition history. The top panel shows retrievability (tenth power, R^10, for easier analysis). Retrievability grid in gray is labelled by R=99%, R=98%, etc. The middle panel displays optimum intervals in dark blue. Repetition dates are marked by blue vertical lines and labelled in aqua blue. The end of the optimum interval where R crosses 90% line is marked by red lines (only if intervals are longer than optimum intervals). The bottom panel visualizes stability (presented as <code>ln(S)/ln(days)</code> for easier analysis). The graph shows that retrievability drops fast (exponentially) after early repetitions when stability is low, however, it only drops from 100% to 94% in long 10 years after the 7th review.'' | '''''Figure:''' Changes in ''memory status'' over time for an exemplary item. The horizontal axis represents time spanning the entire repetition history. The top panel shows retrievability (tenth power, R^10, for easier analysis). Retrievability grid in gray is labelled by R=99%, R=98%, etc. The middle panel displays optimum intervals in dark blue. Repetition dates are marked by blue vertical lines and labelled in aqua blue. The end of the optimum interval where R crosses 90% line is marked by red lines (only if intervals are longer than optimum intervals). The bottom panel visualizes stability (presented as <code>ln(S)/ln(days)</code> for easier analysis). The graph shows that retrievability drops fast (exponentially) after early repetitions when stability is low, however, it only drops from 100% to 94% in long 10 years after the 7th review. All values are derived from an actual repetition history and the [[Glossary:DSR model|DSR model]]'' | ||
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Revision as of 07:26, 19 June 2016
Figure: Changes in memory status over time for an exemplary item. The horizontal axis represents time spanning the entire repetition history. The top panel shows retrievability (tenth power, R^10, for easier analysis). Retrievability grid in gray is labelled by R=99%, R=98%, etc. The middle panel displays optimum intervals in dark blue. Repetition dates are marked by blue vertical lines and labelled in aqua blue. The end of the optimum interval where R crosses 90% line is marked by red lines (only if intervals are longer than optimum intervals). The bottom panel visualizes stability (presented as
ln(S)/ln(days)for easier analysis). The graph shows that retrievability drops fast (exponentially) after early repetitions when stability is low, however, it only drops from 100% to 94% in long 10 years after the 7th review. All values are derived from an actual repetition history and the DSR model
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