BanditSpec: Adaptive Speculative Decoding via Bandit Algorithms

Recent advancements in Large Language Models (LLMs) have led to the development of a multi-reward Group Relative Policy Optimization (GRPO) framework aimed at enhancing the stability and prosody of single-codebook text-to-speech (TTS) systems. This framework integrates various rule-based rewards to optimize token generation policies, addressing issues such as unstable prosody and speaker drift that have plagued existing models.

A recent study has introduced an automated pipeline for generating large-scale, psychologically-grounded multi-turn jailbreak datasets for Large Language Models (LLMs). This approach leverages psychological principles like Foot-in-the-Door (FITD) to create a benchmark of 1,500 scenarios, revealing significant vulnerabilities in models, particularly those in the GPT family, when subjected to multi-turn conversational attacks.

A new framework called Mosaic Pruning (MoP) has been introduced to enhance the generalizability of Sparse Mixture-of-Experts (SMoE) models, addressing the limitations of existing pruning methods that often lead to performance degradation across different domains. MoP employs a structured 'cluster-then-select' process to create a comprehensive set of experts, significantly reducing the static memory overhead associated with loading all experts during inference.

Recent research has highlighted significant vulnerabilities in Large Language Models (LLMs), particularly concerning prompt injection and jailbreaking attacks. This review categorizes various attack methods and evaluates defense strategies, including prompt filtering and self-regulation, to mitigate these risks.

The introduction of HERMES, a Heterogeneous Multi-stage LLM inference Execution Simulator, marks a significant advancement in optimizing inference pipelines for Large Language Models (LLMs). This tool addresses the limitations of existing simulators by accurately modeling diverse request stages, including Retrieval Augmented Generation (RAG) and key-value cache retrieval, across complex hardware architectures.

A new framework called PersonaPulse has been introduced to optimize prompts for Large Language Models (LLMs), enhancing their ability to express realistic personality traits. This approach iteratively refines role-play prompts while using a situational response benchmark for evaluation, demonstrating improved performance over previous methods based on psychological personality descriptions.

A new framework called Mixture of Attention Spans (MoA) has been proposed to enhance the efficiency of Large Language Models (LLMs) by optimizing inference through heterogeneous sliding-window lengths. This approach addresses the limitations of existing methods that use a uniform window length, which fails to capture the diverse attention patterns in LLMs, particularly in long-context scenarios.

A systematic study has been conducted on compression ordering for large language models (LLMs), specifically focusing on the Qwen2.5 3B model. The research evaluates various compression techniques such as knowledge distillation, structured pruning, and low-bit quantization, analyzing their performance both independently and in combination. The findings indicate that quantization offers the highest standalone compression, while the sequence of techniques significantly impacts the final model quality.