Robin: a Suite of Multi-Scale Vision-Language Models and the CHIRP Evaluation Benchmark

The proliferation of Vision-Language Models (VLMs) in the past several years calls for rigorous and comprehensive evaluation methods and benchmarks. This work analyzes existing VLM evaluation techniques, including automated metrics, AI-based assessments, and human evaluations across diverse tasks. We first introduce Robin - a novel suite of VLMs that we built by combining Large Language Models (LLMs) and Vision Encoders (VEs) at multiple scales, and use Robin to identify shortcomings of current evaluation approaches across scales. Next, to overcome the identified limitations, we introduce CHIRP - a new long form response benchmark we developed for more robust and complete VLM evaluation. We provide open access to the Robin training code, model suite, and CHIRP benchmark to promote reproducibility and advance VLM research.

Towards Adversarially Robust Vision-Language Models: Insights from Design Choices and Prompt Formatting Techniques

Vision-Language Models (VLMs) have witnessed a surge in both research and real-world applications. However, as they are becoming increasingly prevalent, ensuring their robustness against adversarial attacks is paramount. This work systematically investigates the impact of model design choices on the adversarial robustness of VLMs against image-based attacks. Additionally, we introduce novel, cost-effective approaches to enhance robustness through prompt formatting. By rephrasing questions and suggesting potential adversarial perturbations, we demonstrate substantial improvements in model robustness against strong image-based attacks such as Auto-PGD. Our findings provide important guidelines for developing more robust VLMs, particularly for deployment in safety-critical environments.

Towards ethical multimodal systems

The impact of artificial intelligence systems on our society is increasing at an unprecedented speed. For instance, ChatGPT is being tested in mental health treatment applications such as Koko, Stable Diffusion generates pieces of art competitive with (or outperforming) human artists, and so on. Ethical concerns regarding the behavior and applications of generative AI systems have been increasing over the past years, and the field of AI alignment - steering the behavior of AI systems towards being aligned with human values - is a rapidly growing subfield of modern AI. In this paper, we address the challenges involved in ethical evaluation of a multimodal artificial intelligence system. The multimodal systems we focus on take both text and an image as input and output text, completing the sentence or answering the question asked as input. We perform the evaluation of these models in two steps: we first discus the creation of a multimodal ethical database and then use this database to construct morality-evaluating algorithms. The creation of the multimodal ethical database is done interactively through human feedback. Users are presented with multiple examples and votes on whether they are ethical or not. Once these answers have been aggregated into a dataset, we built and tested different algorithms to automatically evaluate the morality of multimodal systems. These algorithms aim to classify the answers as ethical or not. The models we tested are a RoBERTa-large classifier and a multilayer perceptron classifier.

A review of modern surveillance techniques and their presence in our society

Technology is now omnipresent around us. Especially with the recent health crisis, many people started working remotely, bringing home an additional computer. Combining this with our smartphones that we could never leave behind, we are always surrounded by these technological marvels. However, they come along with a rather dark side from which many people choose to look away, preferring to live in denial: the surveillance. All of these devices can be used to keep a close eye and ear on us. The modern surveillance machine has reached a new, groundbreaking, size; and we will attempt to understand how we ended up in this situation. To have a complete understanding of the problem, it is important to gather some historical background to comprehend where this issue comes from as well as a review of the different actors. Each actor has a specific skillset it will use to acquire the desired information, and what information they choose to gather depends strongly on their motives. We will go over the many tricks used to gather our information, as well as its relevance in the current surveillance climate.