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Behavioral Bias of Vision-Language Models: A Behavioral Finance View

arXiv.org Artificial Intelligence

Large Vision-Language Models (LVLMs) evolve rapidly as Large Language Models (LLMs) was equipped with vision modules to create more human-like models. However, we should carefully evaluate their applications in different domains, as they may possess undesired biases. Our work studies the potential behavioral biases of LVLMs from a behavioral finance perspective, an interdisciplinary subject that jointly considers finance and psychology. We propose an end-to-end framework, from data collection to new evaluation metrics, to assess LVLMs' reasoning capabilities and the dynamic behaviors manifested in two established human financial behavioral biases: recency bias and authority bias. Our evaluations find that recent open-source LVLMs such as LLaVA-NeXT, MobileVLM-V2, Mini-Gemini, MiniCPM-Llama3-V 2.5 and Phi-3-vision-128k suffer significantly from these two biases, while the proprietary model GPT-4o is negligibly impacted. Our observations highlight directions in which open-source models can improve. The code is available at https://github.com/mydcxiao/vlm_behavioral_fin.


LLM+Reasoning+Planning for supporting incomplete user queries in presence of APIs

arXiv.org Artificial Intelligence

Recent availability of Large Language Models (LLMs) has led to the development of numerous LLM-based approaches aimed at providing natural language interfaces for various end-user tasks. These end-user tasks in turn can typically be accomplished by orchestrating a given set of APIs. In practice, natural language task requests (user queries) are often incomplete, i.e., they may not contain all the information required by the APIs. While LLMs excel at natural language processing (NLP) tasks, they frequently hallucinate on missing information or struggle with orchestrating the APIs. The key idea behind our proposed approach is to leverage logical reasoning and classical AI planning along with an LLM for accurately answering user queries including identification and gathering of any missing information in these queries. Our approach uses an LLM and ASP (Answer Set Programming) solver to translate a user query to a representation in Planning Domain Definition Language (PDDL) via an intermediate representation in ASP. We introduce a special API "get_info_api" for gathering missing information. We model all the APIs as PDDL actions in a way that supports dataflow between the APIs. Our approach then uses a classical AI planner to generate an orchestration of API calls (including calls to get_info_api) to answer the user query. Our evaluation results show that our approach significantly outperforms a pure LLM based approach by achieving over 95\% success rate in most cases on a dataset containing complete and incomplete single goal and multi-goal queries where the multi-goal queries may or may not require dataflow among the APIs.


AI for Managers - IIMBX

#artificialintelligence

AI for Managers is a 16-month long programme comprising 11 online modular courses stacked together based on the order of their sequence in a learning curve. It aims to make the knowledge of Artificial Intelligence and its components such as Statistical Learning, Machine Learning, and Deep Learning accessible to a large number of interested candidates from fresh graduates to senior managers who aspire to become competent Decision Makers. Understand foundations of data science on which the AI models are built. Understand and apply machine learning algorithms such as supervised learning, unsupervised learning, and reinforcement learning algorithms to solve problems across various functional areas of management. Apply AI techniques to solve problems in various sectors such as Aerospace, Banking financial services and insurance (BFSI), E-commerce, Manufacturing, Retail, Sports and Services.


RL4health: Crowdsourcing Reinforcement Learning for Knee Replacement Pathway Optimization

arXiv.org Artificial Intelligence

Joint replacement is the most common inpatient surgical treatment in the US. We investigate the clinical pathway optimization for knee replacement, which is a sequential decision process from onset to recovery. Based on episodic claims from previous cases, we view the pathway optimization as an intelligence crowdsourcing problem and learn the optimal decision policy from data by imitating the best expert at every intermediate state. We develop a reinforcement learning-based pipeline that uses value iteration, state compression and aggregation learning, kernel representation and cross validation to predict the best treatment policy. It also provides forecast of the clinical pathway under the optimized policy. Empirical validation shows that the optimized policy reduces the overall cost by 7 percent and reduces the excessive cost premium by 33 percent.


Here's The New Start Date For Fortnite: Battle Royale's Season 5

Forbes - Tech

The season that started with a big comet impact is about to enter Week 9, and by this point many have already unlocked some of the battle pass's top-tier rewards, like the fully-upgraded Omega and Carbide skins or the Visitor skin from the Blockbuster Challenge. And with that, we turn our attention forward to Season 5, which, in true Fortnite style, is an absolute mystery. Epic has, however, announced a new end date for Season 4 and a new start date for Season 5. A recent post from an Epic employee on Reddit says that the new start date for Season 5 is Thursday, July 12. This makes sense: midway through the season Epic moved the challenge reset from Tuesday to Thursday, and this shift reflects that. The previous end date for Season 4 was Monday, July 9, with Season 5 assumed to be beginning the next day after downtime at 4:00 a.m.