Semanlink - Language ; Entreprise AND Language Model: Adaptation

> the paper LoRA: Low-Rank Adaptation of Large Language Models proposes to decompose the weight changes, ΔW, into a lower-rank representation. (To be technically correct, LoRA does not decompose the matrices directly, but it learns the decomposed matrices via backpropagation).
>
> suppose ΔW is the weight update for an A × B weight matrix. Then, we can decompose the weight update matrix into two smaller matrices: ΔW = WA WB, where WA is an an A × r-dimensional matrix, and WB is an an r × B-dimensional matrix.

LORA and LLama :

> Lit-LLaMA repository a simple, readable reimplementation of Meta’s popular LLaMA model. Besides code for training and running LLaMA itself (with the original Meta LLaMA weights), it also contains code for finetuning LLaMA using LLaMA-Adapter and LoRA.

2023-07-27 About

What is low-rank adaptation (LoRA)? - TechTalks

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2023-07-27 About

LoRA for semantic similarity tasks

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2023-07-21 About

clem 🤗 sur Twitter : "Llama 2 by @Meta is already integrated with @huggingface transformers, TGI, inference endpoints, PEFT and much more..."

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2023-07-19 About

How to use Alpaca-LoRA to fine-tune a model like ChatGPT

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2023-05-26 About

Google "We Have No Moat, And Neither Does OpenAI"

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> low-cost public involvement was enabled
by a vastly cheaper mechanism for fine tuning called low
rank adaptation ()[LoRA](tag:lora)

> **Part of what makes LoRA so effective is that ... it’s stackable.**
>
> By contrast, training giant models from scratch not only
throws away the pretraining, but also any iterative
improvements that have been made on top.

> LoRA updates are very cheap to produce (~$100) for the
most popular model sizes.

> Many of these projects are saving time by training on
small, highly curated datasets...
> These
datasets are built using synthetic methods (e.g. filtering
the best responses from an existing model) and
scavenging from other projects

> Directly Competing With Open Source
Is a Losing Proposition

> Paradoxically, the one clear winner in all of this is Meta.
Because the leaked model was theirs ([LLaMA](tag:llama)), they have
effectively garnered an entire planet's worth of free labor.
Since most open source innovation is happening on top of
their architecture, there is nothing stopping them from
directly incorporating it into their products.

2023-05-04 About

[2106.09685] LoRA: Low-Rank Adaptation of Large Language Models

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2023-03-21 About

[2002.01808] K-Adapter: Infusing Knowledge into Pre-Trained Models with Adapters

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2023-01-12 About

[2106.10199] BitFit: Simple Parameter-efficient Fine-tuning for Transformer-based Masked Language-models

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2022-09-01 About

On Stability of Few-Sample Transformer Fine-Tuning | Kaggle

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2022-08-29 About

adapter-hub/adapter-transformers: Huggingface Transformers + Adapters

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2022-07-22 About

[2203.10581] Cluster & Tune: Boost Cold Start Performance in Text Classification

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[Leshem Choshen sur Twitter : "Labelled data is scarce, what can we do?..."](doc:2022/04/leshem_choshen_sur_twitter_l)

> **One-sentence Summary**: we suggest adding an unsupervised intermediate classification step, before finetunning and after pretraining BERT, and show it improves performance for data-constrained cases.

> for text classification cold start (when labeled
data is scarce), **add an intermediate unsupervised
classification task**, between the pretraining
and fine-tuning phases:
> perform clustering and
train the pre-trained model on predicting the
cluster labels.

> this additional
classification phase can significantly improve
performance, mainly for **topical classification**
tasks

> we use an efficient clustering technique,
that relies on simple Bag Of Words (BOW)
representations, to partition the unlabeled training
data into relatively homogeneous clusters of text
instances.
>
> Next, we treat these clusters as labeled
data for an intermediate text classification task, and
train the pre-trained model – with or without additional
MLM pretraining – with respect to this
multi-class problem, prior to the final fine-tuning
over the actual target-task labels

> The underlying
intuition is that inter-training the model
over a related text classification task would be more
beneficial compared to MLM inter-training, which
focuses on different textual entities, namely predicting
the identity of a single token.

2022-04-06 About

Leshem Choshen sur Twitter : "Labelled data is scarce, what can we do?..."

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