AI Papers of the Week
Every paper worth reading in AI, hand-picked one week at a time.
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Branch-Train-MiX (BTX)
Meta's BTX produces a single Mixture-of-Experts LLM by first training specialized experts in parallel and then mixing them, sidestepping the high cost of training one big generalist.

MM1: Multimodal LLM Pre-training
Apple's MM1 paper runs extensive ablations on multimodal LLM pretraining choices and releases a family of models up to 30B parameters that set competitive MLLM pretraining benchmarks.

SaulLM-7B: LLM for Law
SaulLM-7B is an open legal-domain LLM built on Mistral 7B and continually pretrained on 30B+ tokens of English legal text, with a companion instruction-tuning recipe.

TripoSR
TripoSR is a transformer-based single-image 3D reconstruction model that returns a textured mesh in under 0.5 seconds, building on the LRM architecture with a stronger data and training pipeline.

Stable Diffusion 3
Stability AI previews Stable Diffusion 3, a suite of image-generation models from 800M to 8B parameters that shifts to a diffusion-transformer backbone with flow matching.

LoRA+
LoRA+ is a minimal one-line change to LoRA: use different learning rates for the down-projection (A) and up-projection (B) matrices to restore feature learning at large width.

V-JEPA
Meta's V-JEPA learns visual representations by predicting features in masked video regions, without pretrained image encoders, text, negatives, or reconstruction.

The Boundary of Neural Network Trainability is Fractal
Sohl-Dickstein finds that the boundary between trainable and untrainable hyperparameter configurations looks like a Mandelbrot-style fractal across many architectures.

Survey of LLMs
A survey that maps the landscape of the three dominant LLM families - GPT, Llama, and PaLM - and the shared toolbox used to build and augment them.

Grandmaster-Level Chess Without Search
DeepMind shows that a 270M-parameter transformer trained purely with supervised learning on Stockfish-generated data reaches grandmaster-level chess without any search at inference time.

OLMo
Allen AI releases OLMo, a truly open 7B-parameter LLM shipped with training code, pretraining data, full weights, evaluation tooling, and fine-tuning recipes - an answer to the "open-weights but closed-pipeline" releases dominating the space.

Advances in Multimodal LLMs
A comprehensive survey mapping design choices for architecture and training pipeline around multimodal large language models (MLLMs).

Compression Algorithms for LLMs
A survey covering the main families of LLM compression techniques and when each one is appropriate.

Depth Anything
A robust monocular depth estimator designed to handle "any image under any circumstance" by scaling self-training on unlabeled data rather than hunting for bigger labeled sets.

Knowledge Fusion of LLMs (FuseLLM)
FuseLLM proposes fusing the capabilities of multiple existing LLMs into a single target model by distilling their output distributions rather than retraining from scratch.

RAG vs. Finetuning
Microsoft researchers systematically compare RAG and fine-tuning (and their combination) on LLMs like Llama 2 and GPT-4 using an agricultural domain dataset.

Tuning Language Models by Proxy
Proxy-tuning steers a large frozen LLM by *decoding-time* logit arithmetic using a much smaller fine-tuned model as a "proxy".

ReFT (Reinforced Fine-Tuning)
ByteDance's ReFT enhances LLM reasoning by combining supervised fine-tuning with online RL that samples alternative reasoning paths, without a learned reward model.

Self-Play Fine-Tuning (SPIN)
SPIN shows that a supervised fine-tuned LLM can keep improving via self-play alone, without any additional human annotations.

LLaMA Pro
LLaMA Pro introduces block expansion as a recipe for adding new knowledge to a pretrained LLM without catastrophic forgetting.

DocLLM
JPMorgan's DocLLM is a lightweight extension to LLMs for visual-document understanding that uses bounding-box spatial information rather than image pixels.

Exploiting Novel GPT-4 APIs
A red-team study of three newer GPT-4 API surfaces - fine-tuning, function calling, and knowledge retrieval - that reveals each introduces new attack vectors.

Principled Instructions Are All You Need
Distills effective LLM prompting into 26 guiding principles and validates them across multiple model families.

Antibiotic Discovery with Graph Deep Learning (Nature)
MIT researchers use explainable graph neural networks to discover a new structural class of antibiotics.