per-user chronological split for rating prediction More...
Public Member Functions | |
| RatingsPerUserChronologicalSplit (ITimedRatings ratings, double ratio) | |
| Create a chronological split of rating prediction data More... | |
| RatingsPerUserChronologicalSplit (ITimedRatings ratings, int num_test_ratings_per_user) | |
| Create a chronological split of rating prediction data More... | |
Properties | |
| uint | NumberOfFolds [get] |
| IList< ITimedRatings > | Test [get] |
| IList< ITimedRatings > | Train [get] |
Detailed Description
per-user chronological split for rating prediction
Chronological splits (splits according to the time of the rating) treat all ratings before a certain time as training ratings, and the ones after that time as test/validation ratings.
Here, the split date may differ from user to user. In the constructor, you can either specify which part (ratio) or how many of a user's rating are supposed to be used for validation.
The dataset must not be modified after the split - this would lead to undefined behavior.
Constructor & Destructor Documentation
|
inline |
Create a chronological split of rating prediction data
If ratings have exactly the same date and time, and they are close to the threshold between train and test, there is no guaranteed order between them (ties are broken according to how the sorting procedure sorts the ratings).
- Parameters
-
ratings the dataset ratio the ratio of ratings to use for validation (per user)
|
inline |
Create a chronological split of rating prediction data
If ratings have exactly the same date and time, and they are close to the threshold between train and test, there is no guaranteed order between them (ties are broken according to how the sorting procedure sorts the ratings).
- Parameters
-
ratings the dataset num_test_ratings_per_user the number of test ratings (per user)
The documentation for this class was generated from the following file:
- RatingsPerUserChronologicalSplit.cs
