Robotic manipulation policies are currently limited by their inability to extrapolate beyond their training data. While these policies can adapt to new situations, such as different object positions or lighting, they struggle with unfamiliar objects or tasks, and require assistance to process unseen instructions.
Promisingly, vision and language foundation models, like CLIP, SigLIP, and Llama…
The evaluation of Large Language Models (LLMs) requires a systematic and multi-layered approach to accurately identify areas of improvement and limitations. As these models advance and become more intricate, their assessment presents greater challenges due to the diversity of tasks they are required to execute. Current benchmarks often employ non-precise, simplistic criteria such as "helpfulness"…
Machine unlearning refers to the efficient elimination of specific training data's influence on a trained AI model. It addresses legal, privacy, and safety issues arising from large, data-dependent AI models. The primary challenge is to eliminate specific data without the expensive and time-consuming approach of retraining the model from scratch, especially for complex deep neural…
The Allen Institute for AI has recently launched the Tulu 2.5 suite, a revolutionary progression in model training employing Direct Preference Optimization (DPO) and Proximal Policy Optimization (PPO). The suite encompasses an array of models that have been trained on several datasets to augment their reward and value models, with the goal of significantly enhancing…
DeepMind researchers have presented TransNAR, a new hybrid architecture which pairs the language comprehension capabilities of Transformers with the robust algorithmic abilities of pre-trained graph neural networks (GNNs), known as neural algorithmic reasoners (NARs. This combination is designed to enhance the reasoning capabilities of language models, while maintaining generalization capacities.
The routine issue faced by…
Machine learning is a crucial domain where differential privacy (DP) and selective classification (SC) play pivotal roles in safeguarding sensitive data. DP adds random noise to protect individual privacy while retaining the overall utility of the data, while SC chooses to refrain from making predictions in cases of uncertainty to enhance model reliability. These components…
Large Language Models (LLMs) present a potential problem in their inability to accurately represent uncertainty about the reliability of their output. This uncertainty can have serious consequences in areas such as healthcare, where stakeholder confidence in the system's predictions is critical. Variations in freeform language generation can further complicate the issue, as these cannot be…
With their capacity to process and generate human-like text, Large Language Models (LLMs) have become critical tools that empower a variety of applications, from chatbots and data analysis to other advanced AI applications. The success of LLMs relies heavily on the diversity and quality of instructional data used for training.
One of the operative challenges in…
Artificial Intelligence (AI) aims to create systems that can execute tasks normally requiring human intelligence. These tasks include learning, reasoning, problem-solving, perception, and language understanding. Such technologies are highly beneficial in various industries such as healthcare, finance, transportation, and entertainment. Consequently, optimizing AI models to efficiently and precisely perform these tasks is a significant challenge…
Neural networks using gradient descent often perform well even when overparameterized and initialized randomly. They frequently find global optimal solutions, achieving zero training error without overfitting, a phenomenon referred to as "benign overfitting." However, in the case of Rectified Linear Unit (ReLU) networks, solutions can lead to overfitting if they interpolate the data. Particularly in…
Pre-trained Large language models (LLMs), such as transformers, typically have a fixed context window size, most commonly around 4K tokens. Nevertheless, numerous applications require processing significantly longer contexts, going all the way up to 256K tokens. The challenge that arises in elongating the context length of these models lies primarily in the efficient use of…
The proliferation of Large Language Models (LLMs) in the field of Artificial Intelligence (AI) has been a topic of much debate on Reddit. In a post, a user highlighted the existence of over 700,000 LLMs, raising questions about the usefulness and potential of these models. This has sparked a broad debate about the consequences of…