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AI-driven Dispensing of Coral Reseeding Devices for Broad-scale Restoration of the Great Barrier Reef

arXiv.org Artificial Intelligence

Coral reefs are on the brink of collapse, with climate change, ocean acidification, and pollution leading to a projected 70-90% loss of coral species within the next decade. Restoration efforts are crucial, but their success hinges on introducing automation to upscale efforts. We present automated deployment of coral re-seeding devices powered by artificial intelligence, computer vision, and robotics. Specifically, we perform automated substrate classification, enabling detection of areas of the seafloor suitable for coral growth, thus significantly reducing reliance on human experts and increasing the range and efficiency of restoration. Real-world testing of the algorithms on the Great Barrier Reef leads to deployment accuracy of 77.8%, sub-image patch classification of 89.1%, and real-time model inference at 5.5 frames per second. Further, we present and publicly contribute a large collection of annotated substrate image data to foster future research in this area.


Ranking of Bangla Word Graph using Graph-based Ranking Algorithms

arXiv.org Artificial Intelligence

Ranking words is an important way to summarize a text or to retrieve information. A word graph is a way to represent the words of a sentence or a text as the vertices of a graph and to show the relationship among the words. It is also useful to determine the relative importance of a word among the words in the word-graph. In this research, the ranking of Bangla words are calculated, representing Bangla words from a text in a word graph using various graph based ranking algorithms. There is a lack of a standard Bangla word database. In this research, the Indian Language POS-tag Corpora is used, which has a rich collection of Bangla words in the form of sentences with their parts of speech tags. For applying a word graph to various graph based ranking algorithms, several standard procedures are applied. The preprocessing steps are done in every word graph and then applied to graph based ranking algorithms to make a comparison among these algorithms. This paper illustrate the entire procedure of calculating the ranking of Bangla words, including the construction of the word graph from text. Experimental result analysis on real data reveals the accuracy of each ranking algorithm in terms of F1 measure.


Look Beyond: Two-Stage Scene View Generation via Panorama and Video Diffusion

arXiv.org Artificial Intelligence

Novel view synthesis (NVS) from a single image is highly ill-posed due to large unobserved regions, especially for views that deviate significantly from the input. While existing methods focus on consistency between the source and generated views, they often fail to maintain coherence and correct view alignment across long-range or looped trajectories. We propose a model that addresses this by decomposing single-view NVS into a 360-degree scene extrapolation followed by novel view interpolation. This design ensures long-term view and scene consistency by conditioning on keyframes extracted and warped from a generated panoramic representation. In the first stage, a panorama diffusion model learns the scene prior from the input perspective image. Perspective keyframes are then sampled and warped from the panorama and used as anchor frames in a pre-trained video diffusion model, which generates novel views through a proposed spatial noise diffusion process. Compared to prior work, our method produces globally consistent novel views -- even in loop closure scenarios -- while enabling flexible camera control. Experiments on diverse scene datasets demonstrate that our approach outperforms existing methods in generating coherent views along user-defined trajectories. Our implementation is available at https://github.com/YiGuYT/LookBeyond.


Fairness in Federated Learning: Trends, Challenges, and Opportunities

arXiv.org Artificial Intelligence

At the intersection of the cutting-edge technologies and privacy concerns, Federated Learning (FL) with its distributed architecture, stands at the forefront in a bid to facilitate collaborative model training across multiple clients while preserving data privacy. However, the applicability of FL systems is hindered by fairness concerns arising from numerous sources of heterogeneity that can result in biases and undermine a system's effectiveness, with skewed predictions, reduced accuracy, and inefficient model convergence. This survey thus explores the diverse sources of bias, including but not limited to, data, client, and model biases, and thoroughly discusses the strengths and limitations inherited within the array of the state-of-the-art techniques utilized in the literature to mitigate such disparities in the FL training process. We delineate a comprehensive overview of the several notions, theoretical underpinnings, and technical aspects associated with fairness and their adoption in FL-based multidisciplinary environments. Furthermore, we examine salient evaluation metrics leveraged to measure fairness quantitatively. Finally, we envisage exciting open research directions that have the potential to drive future advancements in achieving fairer FL frameworks, in turn, offering a strong foundation for future research in this pivotal area.


Enabling Transparent Cyber Threat Intelligence Combining Large Language Models and Domain Ontologies

arXiv.org Artificial Intelligence

Effective Cyber Threat Intelligence (CTI) relies upon accurately structured and semantically enriched information extracted from cybersecurity system logs. However, current methodologies often struggle to identify and interpret malicious events reliably and transparently, particularly in cases involving unstructured or ambiguous log entries. In this work, we propose a novel methodology that combines ontology-driven structured outputs with Large Language Models (LLMs), to build an Artificial Intelligence (AI) agent that improves the accuracy and explainability of information extraction from cybersecurity logs. Central to our approach is the integration of domain ontologies and SHACL-based constraints to guide the language model's output structure and enforce semantic validity over the resulting graph. Extracted information is organized into an ontology-enriched graph database, enabling future semantic analysis and querying. The design of our methodology is motivated by the analytical requirements associated with honeypot log data, which typically comprises predominantly malicious activity. While our case study illustrates the relevance of this scenario, the experimental evaluation is conducted using publicly available datasets. Results demonstrate that our method achieves higher accuracy in information extraction compared to traditional prompt-only approaches, with a deliberate focus on extraction quality rather than processing speed.


Enhancing Cryptocurrency Sentiment Analysis with Multimodal Features

arXiv.org Artificial Intelligence

As cryptocurrencies gain popularity, the digital asset marketplace becomes increasingly significant. Understanding social media signals offers valuable insights into investor sentiment and market dynamics. Prior research has predominantly focused on text-based platforms such as Twitter. However, video content remains underexplored, despite potentially containing richer emotional and contextual sentiment that is not fully captured by text alone. In this study, we present a multimodal analysis comparing TikTok and Twitter sentiment, using large language models to extract insights from both video and text data. We investigate the dynamic dependencies and spillover effects between social media sentiment and cryptocurrency market indicators. Our results reveal that TikTok's video-based sentiment significantly influences speculative assets and short-term market trends, while Twitter's text-based sentiment aligns more closely with long-term dynamics. Notably, the integration of cross-platform sentiment signals improves forecasting accuracy by up to 20%.


Convergence Analysis of Aggregation-Broadcast in LoRA-enabled Distributed Fine-Tuning

arXiv.org Artificial Intelligence

Federated Learning (FL) enables collaborative model training across decentralized data sources while preserving data privacy. However, the growing size of Machine Learning (ML) models poses communication and computation challenges in FL. Low-Rank Adaptation (LoRA) has recently been introduced into FL as an efficient fine-tuning method, reducing communication overhead by updating only a small number of trainable parameters. Despite its effectiveness, how to aggregate LoRA-updated local models on the server remains a critical and understudied problem. In this paper, we provide a unified convergence analysis for LoRA-based FL. We first categories the current aggregation method into two major type: Sum-Product (SP) and Product-Sum (PS). Then we formally define the Aggregation-Broadcast Operator (ABO) and derive both weak and strong convergence condition under mild assumptions. Furthermore, we present both weak and strong convergence condition that guarantee convergence of the local model and the global model respectively. These theoretical analyze offer a principled understanding of various aggregation strategies. Notably, we prove that the SP and PS aggregation methods satisfy the weak and strong convergence condition respectively, but differ in their ability to achieve the optimal convergence rate. Extensive experiments on standard benchmarks validate our theoretical findings.


Parents could get alerts if children show acute distress while using ChatGPT

The Guardian

Parents could be alerted if their teenagers show acute distress while talking with ChatGPT, amid child safety concerns as more young people turn to AI chatbots for support and advice. The alerts are part of new protections for children using ChatGPT to be rolled out in the next month by OpenAI, which was last week sued by the family of a boy who took his own life after allegedly receiving "months of encouragement" from the system. Other new safeguards will include parents being able to link their accounts to those of their teenagers and controlling how the AI model responds to their child with "age-appropriate model behaviour rules". But internet safety campaigners said the steps did not go far enough and AI chatbots should not be on the market before they are deemed safe for young people. Adam Raine, 16, from California, killed himself in April after discussing a method of suicide with ChatGPT.


Australia moves to stamp out 'nudify' and stalking apps

Al Jazeera

Australia has announced plans to ban apps used for stalking and creating deepfake nudes. Tech platforms will be responsible for preventing access to "nudify" and undetectable online stalking tools under the reforms announced on Tuesday by the Australian government. Minister for Communications Anika Wells said Australia would work with firms to stamp out "abhorrent technologies" while ensuring "legitimate and consent-based" artificial intelligence (AI) and online tracking services were not adversely affected. "Abusive technologies are widely and easily accessible and are causing real and irreparable damage now," Wells said in a statement. "These new, evolving, technologies require a new, proactive, approach to harm prevention – and we'll work closely with industry to achieve this." "While this move won't eliminate the problem of abusive technology in one fell swoop, alongside existing laws and our world-leading online safety reforms, it will make a real difference in protecting Australians," she added.


Australian film-maker Alex Proyas: 'broken' movie industry needs to be rebuilt and 'AI can help us do that'

The Guardian

At a time when capitalist forces are driving much of the advancement in artificial intelligence, Alex Proyas sees the use of AI in film-making as a source of artistic liberation. While many in the film sector see the emergence of artificial intelligence as a threat to their careers, livelihoods and even likenesses, the Australian film-maker behind The Crow, Dark City and I, Robot, believes the technology will make it much easier and cheaper to get projects off the ground. "The model for film-makers, who are the only people I really care about at the end of the day, is broken … and it's not AI that's causing that," Proyas tells the Guardian. He says residuals that film-makers used to rely on between projects are drying up in the streaming era, and the budgets for projects becoming smaller. "We need to rebuild it from the ground up. I believe AI can help us do that, because as it lowers the cost threshold to produce stuff, and as every month goes by, it's lowering it and lowering it, we can do more for less, and we can hopefully retain more ownership of those projects," he says.