* Add the DRY dynamic N-gram anti-repetition sampler
The DRY (Do not Repeat Yourself) sampler is a dynamic N-gram
repetition penalty that negatively scores tokens that would extend
sequences that already appear in the context.
See this discussion for a motivation and explanation of the sampler:
https://github.com/oobabooga/text-generation-webui/pull/5677
This implementation of DRY mostly aligns with the obabooga version
with a few modifications. It uses a more efficient linear scanning
algorithm to identify repetitions. It also supports multi-token
sequence breakers. As a limitation, this implementation reuses
the rep pen range parameter, rather than introducing a new range
just for the DRY sampler.
There is a separate change to lite.koboldai.net that exposes the DRY
sampler parameters to KoboldAI Lite, so none of the embed files have
been changed as part of this commit.
* Update default DRY parameters to match lite
* Improve DRY token debug logging
* Replace `and` with `&&` to fix MSVC compile error
Little known fact: The C++98 standard defines `and` as an
alternative token for the `&&` operator (along with a bunch
of other digraphs). MSVC does not allow these without using
the /Za option or including the <iso646.h> header. Change to
the more standard operator to make this code more portable.
* Fix MSVC compile error because log is not constexpr
Replace the compile-time computation with a floating-point
approximation of log(std::numeric_limits<float>::max()).
* Remove unused llama sampler variables and clean up sequence breakers.
* Remove KCPP_SAMPLER_DRY as a separate enum entry
The DRY sampler is effectively a repetition penalty and there
are very few reasons to apply it at a different place in sampler
order than the standard single-token penalty. There are also
multiple projects that have dependencies on the existing sampler
IDs, including KoboldAI, KoboldAI Lite, and Silly Tavern. In order
to minimize the impact of the dependencies of adding the DRY sampler
to koboldcpp, it makes the most sense to not add a new ID for now,
and instead to piggyback on KCPP_SAMPLER_REP_PEN. In the future
if we find a use case for splitting the application of rep pen and DRY
we can introduce a new enum entry then.
* Add the dry_penalty_last_n to independently control DRY penalty range
This parameter follows the oobabooga semantics: it's optional, with a
default value of zero. Zero means that DRY should sample the entire
context. Otherwise, it's the number of tokens from the end of the
context that are scanned for repetitions.
* Limit sequence breaker lengths in tokens and characters
The core DRY sampler algorithm is linear in the context length, but
there are several parts of the sampler related to multi-token
sequence breakers that are potentially quadratic. Without any
restrictions, a suitably crafted context and sequence breaker could
result in a denial-of-service attack on a server running koboldcpp.
This change limits the maximum number of characters and the maximum
token length of a sequence breaker in order to limit the maximum
overhead associated with the sampler.
This change also improves some comments, adding more detail and
changing the wording to increase clarity.
This avoids compile-time warnings with clang:
./expose.h:66:15: note: const member 'seed' will never be initialized
66 | const int seed;
| ^
No functional change intended.
* Quadratic Sampling UI
Kalomaze's Quadratic Sampling, now has a UI within KCPP.
* remove debug prints
* cleanup, add smooth sampler to dynatemp
---------
Co-authored-by: Concedo <39025047+LostRuins@users.noreply.github.com>
* move Dynatemp changes to new branch
* fix float header
* Properly reintroduce variable expert count
Controllable through experts.txt
* first pass at DynaTemp UI
Checkbox partial implemented, Min and Max Temp implemented
* DynaTemp UI Checkbox
Trigger DynaTemp on checkbox
* DynaTemp UI checkbox edition
Hell Yeah! DynaTemp!
* Remove greedy dynatemp
* Fix race condition caused by debug print
* Fixed broken presets and miro
Fixes broken presets and mirostat
* Remove debug function + HHI temp
Also removed unnecessary softmax double precision
* Fix whitespace (?) for generate function
* epic upstream renaming scheme fix
* fix stupid indents
* Other cleanup
Reintroduce unused rep pen function, move temp functions first before entropy dynamic temp
* Slight indent fix
* revert batch pyinstaller maker to mainline
and also delete experts.txt since adjustable routing is also being removed for the PR
* compact dynatemp into a single value dynatemp_range. This is a float which represents the allowed deviation from the min and max temperature when using dynatemp. Thus, if we want a value of dynatemp_min=0.3, dynatemp_max=0.5, then we would simply set temperature=0.4 and dynatemp_range=0.1. Functionally dynatemp would operate the same, but it would simplify usage and make it a single easy to adjust value.
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Co-authored-by: Alexander Abushady <aabushady214@gmail.com>
Co-authored-by: Concedo <39025047+LostRuins@users.noreply.github.com>
* Add logit_bias to the OpenAI api
* Cleanup and refactor, test in swagger.
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Co-authored-by: Concedo <39025047+LostRuins@users.noreply.github.com>
