mabor::data::dataset::transform

Struct SamplerDataset

pub struct SamplerDataset<D, I> { /* private fields */ }
Expand description

Sample items from a dataset.

This is an convenient way of modeling a dataset as a probability distribution of a fixed size. You have multiple options to instantiate the dataset sampler.

  • With replacement (Default): This is the most efficient way of using the sampler because no state is required to keep indices that have been selected.

  • Without replacement: This has a similar effect to using a shuffled dataset, but with more flexibility since you can set the dataset to an arbitrary size. Once every item has been used, a new cycle is created with a new random suffle.

Implementations§

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impl<D, I> SamplerDataset<D, I>
where D: Dataset<I>, I: Send + Sync,

pub fn new(dataset: D, size: usize) -> SamplerDataset<D, I>

Creates a new sampler dataset with replacement.

pub fn with_replacement(dataset: D, size: usize) -> SamplerDataset<D, I>

Creates a new sampler dataset with replacement.

pub fn without_replacement(dataset: D, size: usize) -> SamplerDataset<D, I>

Creates a new sampler dataset without replacement.

Trait Implementations§

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impl<D, I> Dataset<I> for SamplerDataset<D, I>
where D: Dataset<I>, I: Send + Sync,
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fn get(&self, index: usize) -> Option<I>
Gets the item at the given index.
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fn len(&self) -> usize

Gets the number of items in the dataset.
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fn is_empty(&self) -> bool

Checks if the dataset is empty.
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fn iter(&self) -> DatasetIterator<'_, I> ⓘ
where Self: Sized,
Returns an iterator over the dataset.

Auto Trait Implementations§

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impl<D, I> !Freeze for SamplerDataset<D, I>

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impl<D, I> RefUnwindSafe for SamplerDataset<D, I>
where D: RefUnwindSafe, I: RefUnwindSafe,

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impl<D, I> Send for SamplerDataset<D, I>
where D: Send, I: Send,

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impl<D, I> Sync for SamplerDataset<D, I>
where D: Sync, I: Sync,

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impl<D, I> Unpin for SamplerDataset<D, I>
where D: Unpin, I: Unpin,

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impl<D, I> UnwindSafe for SamplerDataset<D, I>
where D: UnwindSafe, I: UnwindSafe,

Blanket Implementations§

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impl<T> Adaptor<()> for T

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fn adapt(&self)
Adapt the type to be passed to a metric.
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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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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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fn downcast(&self) -> &T

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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> Instrument for T
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fn instrument(self, span: Span) -> Instrumented<Self>
Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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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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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> PolicyExt for T
where T: ?Sized,
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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,
Create a new Policy that returns [Action::Follow] only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,
Create a new Policy that returns [Action::Follow] if either self or other returns Action::Follow. Read more
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Performs the conversion.
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Performs the conversion.
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fn upcast(&self) -> Option<&T>

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impl<V, T> VZip<V> for T
where V: MultiLane<T>,
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fn vzip(self) -> V

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impl<I, T> Window<I> for T
where T: Dataset<I> + ?Sized,
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fn window(&self, current: usize, size: NonZero<usize>) -> Option<Vec<I>>
Creates a window of a collection. Read more
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impl<I, T> Windows<I> for T
where T: Dataset<I>,
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fn windows(&self, size: usize) -> WindowsIterator<'_, I> ⓘ

Is empty if the Dataset is shorter than size.

§Panics

Panics if size is 0.

§Examples
use crate::burn_dataset::{
   transform::{Windows, WindowsDataset},
   Dataset, InMemDataset,
};

let items = [1, 2, 3, 4].to_vec();
let dataset = InMemDataset::new(items.clone());

for window in dataset.windows(2) {
 // do sth with window
}
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where S: Into<Dispatch>,
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where T: Sync,