backprop-0.1.5.2: CHANGELOG.md
Changelog
=========
Version 0.1.5.2
---------------
*Apr 26, 2018*
<https://github.com/mstksg/backprop/releases/tag/v0.1.5.2>
* Added `coerceVar` to *Numeric.Backprop*
* Added `Random` instaces for all tuple types. Same as for `Binary`, this
does incur a *random* and *time* dependency only from the tuple types.
Again, because these packages are a part of GHC's boot libraries, this
is hopefully not too bad.
Version 0.1.5.1
---------------
*Apr 9, 2018*
<https://github.com/mstksg/backprop/releases/tag/v0.1.5.1>
* Fixed `NFData` instance for `T`; before, was shallow.
* Added `Typeable` instances for all tuple types, and for `BVar`.
* Added `Eq`, `Ord`, `Show`, etc. instances for `T`.
* Added `Binary` instances for all tuple types. Note that this does incur a
*binary* dependency only because of the tuple types; however, this will
hopefully be not too much of an issue because *binary* is a GHC library
anyway.
Version 0.1.5.0
---------------
*Mar 30, 2018*
<https://github.com/mstksg/backprop/releases/tag/v0.1.5.0>
* `T` added to *Numeric.Backprop.Tuple*: basically an `HList` with a `Num`
instance.
* `Eq` and `Ord` instances for `BVar`. Is this sound?
*Internal*
* Refactored `Monoid` instances in *Numeric.Backprop.Tuple*
Version 0.1.4.0
---------------
*Mar 25, 2018*
<https://github.com/mstksg/backprop/releases/tag/v0.1.4.0>
* `isoVar`, `isoVar2`, `isoVar3`, and `isoVarN`: convenient aliases for
applying isomorphisms to `BVar`s. Helpful for use with constructors and
deconstructors.
* `opIso2` and `opIso3` added to *Numeric.Backprop.Op*, for convenience.
* `T0` (Unit with numeric instances) added to *Numeric.Backprop.Tuple".
*Internal*
* Completely decoupled the internal implementation from `Num`, which showed
some performance benefits. Mostly just to make the code slightly cleaner,
and to prepare for some day potentially decoupling the external API from
`Num` as well.
Version 0.1.3.0
---------------
*Feb 12, 2018*
<https://github.com/mstksg/backprop/releases/tag/v0.1.3.0>
* *Preulude.Backprop* module added with lifted versions of several *Prelude*
and base functions.
* `liftOpX` family of operators now have a more logical ordering for type
variables. This change breaks backwards-compatibility.
* `opIsoN` added to export list of *Numeric.Backprop*
* `noGrad` and `noGrad1` added to *Numeric.Backprop.Op*, for functions with
no defined gradient.
*Internal*
* Completely decoupled the internal implementation from `Num`, which showed
some performance benefits.
Version 0.1.2.0
---------------
*Feb 7, 2018*
<https://github.com/mstksg/backprop/releases/tag/v0.1.2.0>
* Added currying and uncurrying functions for tuples in
*Numeric.Backprop.Tuple*.
* `opIsoN`, for isomorphisms between a tuple of values and a value.
* (Internal) AD engine now using `Any` from *ghc-prim* instead of `Some I`
from *type-combinators*
Version 0.1.1.0
---------------
*Feb 6, 2018*
<https://github.com/mstksg/backprop/releases/tag/v0.1.1.0>
* Added canonical strict tuple types with `Num` instances, in the module
*Numeric.Backprop.Tuple*. This is meant to be a band-aid for the problem
of orphan instances and potential mismatched tuple types.
* Fixed bug in `collectVar` that occurs if container sizes change
*Internal*
* Internal tweaks to the underlying automatic differentiation types that
decouple backpropagation from `Num`, internally. `Num` is now just used
externally as a part of the API, which might someday be made optional.
Version 0.1.0.0
---------------
*Feb 5, 2018*
<https://github.com/mstksg/backprop/releases/tag/v0.1.0.0>
* First non-alpha release.
* More or less complete redesign of library. The entire API is completely
changed, and there is no backwards compatibility!
* Everything is now "implicit" style, and there is no more `BP` monad.
* Accessing items in `BVar`s is now lens-, prism-, and traversal- based,
instead of iso- and generics-based.
* `Op` is no longer monadic
* *Mono* modules are removed.
* *Implicit* modules are removed, since they are the default
* *Iso* module is removed, since `Iso`s no longer play major role in the
implementation of the library.
* Removed dependency on *ad* and *ad*-based ops, which had been pulling in
the vast majority of dependencies.
* Moved from *.cabal* file to *hpack* system.
Version 0.0.3.0
---------------
*Alpha*
<https://github.com/mstksg/backprop/releases/tag/v0.0.3.0>
* Removed samples as registered executables in the cabal file, to reduce
dependences to a bare minimum. For convenience, build script now also
compiles the samples into the local directory if *stack* is installed.
* Added experimental (unsafe) combinators for working with GADTs with
existential types, `withGADT`, to *Numeric.Backprop* module.
* Fixed broken links in changelog.
Version 0.0.2.0
---------------
*Alpha*
<https://github.com/mstksg/backprop/releases/tag/v0.0.2.0>
* Added optimized numeric `Op`s, and re-write `Num`/`Fractional`/`Floating`
instances in terms of them.
* Removed all traces of `Summer`/`Unity` from the library, eliminating a
whole swath of "explicit-Summer"/"explicit-Unity" versions of functions.
As a consequence, the library now only works with `Num` instances. The
API, however, is now much more simple.
* Benchmark suite added for MNIST example.
Version 0.0.1.0
---------------
*Alpha*
<https://github.com/mstksg/backprop/releases/tag/v0.0.1.0>
* Initial pre-release, as a request for comments. API is in a usable form
and everything is fully documented, but there are definitely some things
left to be done. (See [README.md][readme-0.0.1.0])
[readme-0.0.1.0]: https://github.com/mstksg/backprop/tree/v0.0.1.0#readme