lenskit.metrics.ListLength#
- class lenskit.metrics.ListLength#
Bases:
ListMetric
Report the length of the output (recommendation list or predictions).
- Stability:
- Caller (see Stability Levels).
- __init__()#
Methods
__init__
()extract_list_metrics
(data, /)Return the given per-list metric result.
measure_list
(recs, test)Compute the metric value for a single result list.
summarize
(values)Summarize per-list metric values
Attributes
default
label
- measure_list(recs, test)#
Compute the metric value for a single result list.
Individual metric classes need to implement this method.
- summarize(values)#
Summarize per-list metric values
- Returns:
A dictionary containing mean, median, and std.