====Forgetting Curve====

===Description===

{{ :viz_engine:library:forgetting_curve.png?600x300 |Forgetting Curve}}

This curve displays how a student forgets a concept over time and how the reviews help him to strengthen his memory.
On the graph, it is possible to see when the student actually did the reviews and compare those dates to when the reviews were first scheduled.

===Sample url===

<code>
http://domoscio-viz-engine.herokuapp.com/forgetting_curve?student_id=9065&knowledge_node_id=1723&scheduled=true&legend=true&locale=en
</code>

===Parameters===

^ Name                  ^ Type    ^ Possible key ⇒ values  ^ Status    ^
| Student ID            | Integer | student_id=9065        | Binding   |
| Knowledege Node ID    | Integer | knowledge_node_id=1723 | Binding   |
| Scheduled             | Boolean | scheduled=true \\ scheduled=false  | Binding |
| Legend                | Boolean | legend=true \\ legend=false | Binding |
| Locale                | String  | locale=fr \\ locale=en | Optional |