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SamplerDataLoader

Struct SamplerDataLoader 

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pub struct SamplerDataLoader<D>
where D: Dataset,
{ /* private fields */ }
Expand description

Sampler が返す添字列をそのまま Dataset::batch へ渡す ローダー(イシュー #2182)。タプルデータセット((TensorDataset<f32>, TensorDataset<i32>) 等)でも同じ添字が全成分に適用されるため、 分類タスクのように特徴量とラベルを同一のシャッフル順で取り出す 要件を満たす(HookedDataLoader はサンプル単位 transform/collate のため TensorDataset<T> 限定になるが、本型はタプルにも使える)。

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impl<D> SamplerDataLoader<D>
where D: Dataset,

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pub fn new( dataset: D, sampler: impl Sampler + 'static, ) -> Result<SamplerDataLoader<D>, DataError>

dataset.validate() を実行し、タプル成分の長さ不一致を fail-closed に拒否する(DataLoader::new と同じ契約)。

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pub fn dataset(&self) -> &D

保持するデータセットへの参照。

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pub fn into_dataset(self) -> D

内部の dataset を取り出す。

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pub fn num_batches(&self) -> Option<usize>

1 epoch あたりのバッチ数(Sampler::num_batches が Some を 返す場合のみ)。

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pub fn iter(&mut self) -> SamplerBatches<'_, D> ⓘ

1 epoch 分のイテレータを返す。Sampler::start_epoch を呼んで から yield を始める(失敗した場合は最初の next() で 1 回だけ Err を返し、以降は None。Batches の pending_error と 同じ方式)。

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impl<D> Debug for SamplerDataLoader<D>
where D: Dataset,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<D> !RefUnwindSafe for SamplerDataLoader<D>

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impl<D> !Sync for SamplerDataLoader<D>

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impl<D> !UnwindSafe for SamplerDataLoader<D>

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impl<D> Freeze for SamplerDataLoader<D>
where D: Freeze,

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impl<D> Send for SamplerDataLoader<D>
where D: Send,

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impl<D> Unpin for SamplerDataLoader<D>
where D: Unpin,

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impl<D> UnsafeUnpin for SamplerDataLoader<D>
where D: UnsafeUnpin,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V