[Refactor] Made CrossValTypes, HoldoutValTypes to have split functions directly#108
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nabenabe0928
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Feb 22, 2021
| class HoldoutValTypes(Enum): | ||
| """The type of hold out validation (refer to CrossValTypes' doc-string)""" | ||
| holdout_validation = partial(HoldoutValFuncs.holdout_validation) | ||
| stratified_holdout_validation = partial(HoldoutValFuncs.stratified_holdout_validation) |
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Major change: IntEnum -> Enum and holding functions directly
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| def __call__(self, val_share: float, indices: np.ndarray, stratify: Optional[Any] | ||
| ) -> Tuple[np.ndarray, np.ndarray]: | ||
| self.value(val_share=val_share, indices=indices, stratify=stratify) |
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Now we can call the function directly in a way that HoldoutValTypes.holdout_validation().
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| class HoldOutFunc(Protocol): | ||
| class HoldoutValFunc(Protocol): |
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Since we often use holdout_validator, I unified the name.
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Since the previous codes had the default shuffle = True and the indices shuffle before splitting, the test cases for CV and Holdout did not match. More specifically, when I bring back the followings, I could reproduce the original outputs: 1. Bring back _get_indices in BaseDataset 2. Make the default value of self.shuffle in BaseDataset True 3. Input shuffle = True in KFold instead of using ShuffleSplit These reproduce the original outputs. Note that KFold(shuffle=True) and ShuffleSplit() are not identical and even when we input the same random_state, the results do not reproduce.
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ravinkohli
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May 20, 2021
| indices: np.ndarray, | ||
| **kwargs: Any | ||
| ) -> List[Tuple[np.ndarray, np.ndarray]]: | ||
| Additionally, HoldoutValTypes.<function> can be called directly. |
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can you add an example to use it directly?
ravinkohli
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May 20, 2021
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| class CrossValFuncs(): | ||
| # (shuffle, is_stratify) -> split_fn |
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can we also have documentation similar to HoldoutFuncs here?
ravinkohli
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May 20, 2021
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Hey, thanks a lot for this PR. I have left a few suggestions. Also, could you state the reason for making this PR. What issues were there in the previous implementation? How does this PR solve them?
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While maintaining the changes as small as possible, I made the changes.