Large Language Model
Rethinking Time Series Forecasting with LLMs via Nearest Neighbor Contrastive Learning
Bogahawatte, Jayanie, Seneviratne, Sachith, Perera, Maneesha, Halgamuge, Saman
Adapting Large Language Models (LLMs) that are extensively trained on abundant text data, and customizing the input prompt to enable time series forecasting has received considerable attention. While recent work has shown great potential for adapting the learned prior of LLMs, the formulation of the prompt to finetune LLMs remains challenging as prompt should be aligned with time series data. Additionally, current approaches do not effectively leverage word token embeddings which embody the rich representation space learned by LLMs. This emphasizes the need for a robust approach to formulate the prompt which utilizes the word token embeddings while effectively representing the characteristics of the time series. To address these challenges, we propose NNCL-TLLM: Nearest Neighbor Contrastive Learning for Time series forecasting via LLMs. First, we generate time series compatible text prototypes such that each text prototype represents both word token embeddings in its neighborhood and time series characteristics via end-to-end finetuning. Next, we draw inspiration from Nearest Neighbor Contrastive Learning to formulate the prompt while obtaining the top-$k$ nearest neighbor time series compatible text prototypes. We then fine-tune the layer normalization and positional embeddings of the LLM, keeping the other layers intact, reducing the trainable parameters and decreasing the computational cost. Our comprehensive experiments demonstrate that NNCL-TLLM outperforms in few-shot forecasting while achieving competitive or superior performance over the state-of-the-art methods in long-term and short-term forecasting tasks.
LABIIUM: AI-Enhanced Zero-configuration Measurement Automation System
Olowe, Emmanuel A., Chitnis, Danial
The complexity of laboratory environments requires solutions that simplify instrument interaction and enhance measurement automation. Traditional tools often require configuration, software, and programming skills, creating barriers to productivity. Previous approaches, including dedicated software suites and custom scripts, frequently fall short in providing user-friendly solutions that align with programming practices. We present LABIIUM, an AI-enhanced, zero-configuration measurement automation system designed to streamline experimental workflows and improve user productivity. LABIIUM integrates an AI assistant powered by Large Language Models (LLMs) to generate code. LABIIUM's Lab-Automation-Measurement Bridges (LAMBs) enable seamless instrument connectivity using standard tools such as VSCode and Python, eliminating setup overhead. To demonstrate its capabilities, we conducted experiments involving the measurement of the parametric transfer curve of a simple two-transistor inverting amplifier with a current source load. The AI assistant was evaluated using different prompt scenarios and compared with multiple models, including Claude Sonnet 3.5, Gemini Pro 1.5, and GPT-4o. An expert solution implementing the Gradient-Weighted Adaptive Stochastic Sampling (GWASS) method was used as a baseline. The solutions generated by the AI assistant were compared with the expert solution and a uniform linear sweep baseline with 10,000 points. The graph results show that the LLMs were able to successfully complete the most basic uniform sweep, but LLMs were unable to develop adaptive sweeping algorithms to compete with GWASS. The evaluation underscores LABIIUM's ability to enhance laboratory productivity and support digital transformation in research and industry, and emphasizes the future work required to improve LLM performance in Electronic Measurement Science Tasks.
More than Marketing? On the Information Value of AI Benchmarks for Practitioners
Hardy, Amelia, Reuel, Anka, Meimandi, Kiana Jafari, Soder, Lisa, Griffith, Allie, Asmar, Dylan M., Koyejo, Sanmi, Bernstein, Michael S., Kochenderfer, Mykel J.
Public AI benchmark results are widely broadcast by model developers as indicators of model quality within a growing and competitive market. However, these advertised scores do not necessarily reflect the traits of interest to those who will ultimately apply AI models. In this paper, we seek to understand if and how AI benchmarks are used to inform decision-making. Based on the analyses of interviews with 19 individuals who have used, or decided against using, benchmarks in their day-to-day work, we find that across these settings, participants use benchmarks as a signal of relative performance difference between models. However, whether this signal was considered a definitive sign of model superiority, sufficient for downstream decisions, varied. In academia, public benchmarks were generally viewed as suitable measures for capturing research progress. By contrast, in both product and policy, benchmarks -- even those developed internally for specific tasks -- were often found to be inadequate for informing substantive decisions. Of the benchmarks deemed unsatisfactory, respondents reported that their goals were neither well-defined nor reflective of real-world use. Based on the study results, we conclude that effective benchmarks should provide meaningful, real-world evaluations, incorporate domain expertise, and maintain transparency in scope and goals. They must capture diverse, task-relevant capabilities, be challenging enough to avoid quick saturation, and account for trade-offs in model performance rather than relying on a single score. Additionally, proprietary data collection and contamination prevention are critical for producing reliable and actionable results. By adhering to these criteria, benchmarks can move beyond mere marketing tricks into robust evaluative frameworks.
Findings of the Second BabyLM Challenge: Sample-Efficient Pretraining on Developmentally Plausible Corpora
Hu, Michael Y., Mueller, Aaron, Ross, Candace, Williams, Adina, Linzen, Tal, Zhuang, Chengxu, Cotterell, Ryan, Choshen, Leshem, Warstadt, Alex, Wilcox, Ethan Gotlieb
The BabyLM Challenge is a community effort to close the data-efficiency gap between human and computational language learners. Participants compete to optimize language model training on a fixed language data budget of 100 million words or less. This year, we released improved text corpora, as well as a vision-and-language corpus to facilitate research into cognitively plausible vision language models. Submissions were compared on evaluation tasks targeting grammatical ability, (visual) question answering, pragmatic abilities, and grounding, among other abilities. Participants could submit to a 10M-word text-only track, a 100M-word text-only track, and/or a 100M-word and image multimodal track. From 31 submissions employing diverse methods, a hybrid causal-masked language model architecture outperformed other approaches. No submissions outperformed the baselines in the multimodal track. In follow-up analyses, we found a strong relationship between training FLOPs and average performance across tasks, and that the best-performing submissions proposed changes to the training data, training objective, and model architecture. This year's BabyLM Challenge shows that there is still significant room for innovation in this setting, in particular for image-text modeling, but community-driven research can yield actionable insights about effective strategies for small-scale language modeling.
GameGen-X: Interactive Open-world Game Video Generation
Che, Haoxuan, He, Xuanhua, Liu, Quande, Jin, Cheng, Chen, Hao
We introduce GameGen-X, the first diffusion transformer model specifically designed for both generating and interactively controlling open-world game videos. This model facilitates high-quality, open-domain generation by simulating an extensive array of game engine features, such as innovative characters, dynamic environments, complex actions, and diverse events. Additionally, it provides interactive controllability, predicting and altering future content based on the current clip, thus allowing for gameplay simulation. To realize this vision, we first collected and built an Open-World Video Game Dataset from scratch. It is the first and largest dataset for open-world game video generation and control, which comprises over a million diverse gameplay video clips sampling from over 150 games with informative captions from GPT-4o. GameGen-X undergoes a two-stage training process, consisting of foundation model pre-training and instruction tuning. Firstly, the model was pre-trained via text-to-video generation and video continuation, endowing it with the capability for long-sequence, high-quality open-domain game video generation. Further, to achieve interactive controllability, we designed InstructNet to incorporate game-related multi-modal control signal experts. This allows the model to adjust latent representations based on user inputs, unifying character interaction and scene content control for the first time in video generation. During instruction tuning, only the InstructNet is updated while the pre-trained foundation model is frozen, enabling the integration of interactive controllability without loss of diversity and quality of generated video content.
An Evolved Universal Transformer Memory
Cetin, Edoardo, Sun, Qi, Zhao, Tianyu, Tang, Yujin
Prior methods propose to offset the escalating costs of modern foundation models by dropping specific parts of their contexts with hand-designed rules, while attempting to preserve their original performance. We overcome this trade-off with Neural Attention Memory Models (NAMMs), introducing a learned network for memory management that improves both the performance and efficiency of transformers. We evolve NAMMs atop pre-trained transformers to provide different latent contexts focusing on the most relevant information for individual layers and attention heads. NAMMs are universally applicable to any model using self-attention as they condition exclusively on the values in the produced attention matrices. Learning NAMMs on a small set of problems, we achieve substantial performance improvements across multiple long-context benchmarks while cutting the model's input contexts up to a fraction of the original sizes. We show the generality of our conditioning enables zero-shot transfer of NAMMs trained only on language to entirely new transformer architectures even across input modalities, with their benefits carrying over to vision and reinforcement learning.
Here's What OpenAI's 200 Monthly ChatGPT Pro Subscription Includes
Earlier today, OpenAI launched ChatGPT Pro, a 200 monthly subscription for its flagship chatbot. This release is the first of many expected during the next 12 days, as the San Francisco startup has scheduled a slew of announcements to roll out starting today. Everything from OpenAI's 20 monthly subscription is included at this price level as well as significantly more access to the GPT-4o and o1 artificial intelligence models. With a ChatGPT Pro subscription--which will cost 2,400 for a full year--users can also use an exclusive model from OpenAI called o1 pro mode that wields more computing power to process answers. "Power users of ChatGPT, at this point, they really use it a lot, and they want more compute than 20 can buy," said CEO Sam Altman during the video broadcast announcing the new premium tier.
OpenAI wants 200 a month for its most advanced features
OpenAI kicked off its "12 Days of OpenAI" series of livestreams with the announcement of a new, more expensive tier for its flagship chatbot. Starting today, ChatGPT users can pay 200 per month for ChatGPT Pro. Included in the package is unlimited access to the company's latest model, o1, which following a limited preview earlier in the year, is now faster and 34 percent less likely to produce a major error when answering difficult real-world questions. ChatGPT Pro also comes with access to GPT-4o, o1-mini and the company's Advanced Voice mode, but the reason most power users are likely to splurge is the addition of an o1 "pro mode" that gives the chatbot additional compute power to reason through the most complex problems. "In evaluations from external expert testers, o1 pro mode produces more reliably accurate and comprehensive responses, especially in areas like data science, programming, and case law analysis," OpenAI says of the feature.
Microsoft's Copilot Vision preview watches your browser to offer AI help
Microsoft is slowly launching Copilot Vision in preview, a version of Copilot that "reads over your shoulder" as you browse the web, to Copilot Pro subscribers today. Microsoft is pitching Copilot Vision as a collaborative assistant that works along with you as you browse the Internet. Vision was part of a suite of new Copilot demonstrations that Microsoft showed off in October, and was easily the most underwhelming example of new Copilot technologies that I'd seen. Copilot Vision isn't a multimodal AI capability that can interpret the world around you. Instead, it's a cross between Windows Recall and the current version of Copilot.
The Download: OpenAI's defense contract, and making food from microbes
You have been born into an era of intelligent machines. They have watched over you almost since your conception. They let your parents listen in on your tiny heartbeat, track your gestation on an app, and post your sonogram on social media. Well before you were born, you were known to the algorithm. Your arrival coincided with the 125th anniversary of this magazine.