category 1
- South America > Brazil (0.04)
- North America > United States (0.04)
- North America > Canada (0.04)
- (6 more...)
- Information Technology (0.67)
- Law (0.67)
- Government (0.46)
Descriptor: Distance-Annotated Traffic Perception Question Answering (DTPQA)
Theodoridis, Nikos, Brophy, Tim, Mohandas, Reenu, Sistu, Ganesh, Collins, Fiachra, Scanlan, Anthony, Eising, Ciaran
The remarkable progress of Vision-Language Models (VLMs) on a variety of tasks has raised interest in their application to automated driving. However, for these models to be trusted in such a safety-critical domain, they must first possess robust perception capabilities, i.e., they must be capable of understanding a traffic scene, which can often be highly complex, with many things happening simultaneously. Moreover, since critical objects and agents in traffic scenes are often at long distances, we require systems with not only strong perception capabilities at close distances (up to 20 meters), but also at long (30+ meters) range. Therefore, it is important to evaluate the perception capabilities of these models in isolation from other skills like reasoning or advanced world knowledge. Distance-Annotated Traffic Perception Question Answering (DTPQA) is a Visual Question Answering (VQA) benchmark designed specifically for this purpose: it can be used to evaluate the perception systems of VLMs in traffic scenarios using trivial yet crucial questions relevant to driving decisions. It consists of two parts: a synthetic benchmark (DTP-Synthetic) created using a simulator, and a real-world benchmark (DTP-Real) built on top of existing images of real traffic scenes. Additionally, DTPQA includes distance annotations, i.e., how far the object in question is from the camera. More specifically, each DTPQA sample consists of (at least): (a) an image, (b) a question, (c) the ground truth answer, and (d) the distance of the object in question, enabling analysis of how VLM performance degrades with increasing object distance. In this article, we provide the dataset itself along with the Python scripts used to create it, which can be used to generate additional data of the same kind.
- Transportation > Ground > Road (1.00)
- Automobiles & Trucks (0.90)
- South America > Brazil (0.04)
- North America > United States (0.04)
- North America > Canada (0.04)
- (6 more...)
- Information Technology (0.67)
- Law (0.67)
- Government (0.46)
Empirical Analysis Of Heuristic and Approximation Algorithms for the The Mutual-Visibility Problem
Stojanović, Vanja, Pangeršič, Bor
The NP-complete mutual-visibility (MV) problem currently lacks empirical analysis on its practical behaviour despite theoretical studies. This paper addresses this gap by implementing and evaluating three distinct algorithms -- a direct random heuristic, a hypergraph-based approximation, and a genetic algorithm -- on diverse synthetic graph datasets, including those with analytically known $μ(G)$ values and general graph models. Our results demonstrate that for smaller graphs, the algorithms consistently achieve MV set sizes aligning with theoretical bounds. However, for larger instances, achieved solution sizes notably diverge from theoretical limits; this, combined with the absence of tight bounds, complicates absolute quality assessment. Nevertheless, validation on known optimal graphs showed the Genetic Algorithm and other heuristics empirically performing best among tested methods.
DS@GT at CheckThat! 2025: Ensemble Methods for Detection of Scientific Discourse on Social Media
Parikh, Ayush, Truong, Hoang Thanh Thanh, Schofield, Jeanette, Heil, Maximilian
In this paper, we, as the DS@GT team for CLEF 2025 CheckThat! Task 4a Scientific Web Discourse Detection, present the methods we explored for this task. For this multiclass classification task, we determined if a tweet contained a scientific claim, a reference to a scientific study or publication, and/or mentions of scientific entities, such as a university or a scientist. We present 3 modeling approaches for this task: transformer finetuning, few-shot prompting of LLMs, and a combined ensemble model whose design was informed by earlier experiments. Our team placed 7th in the competition, achieving a macro-averaged F1 score of 0.8611, an improvement over the DeBERTaV3 baseline of 0.8375. Our code is available on Github at https://github.com/dsgt-arc/checkthat-2025-swd/tree/main/subtask-4a.
- North America > United States > Georgia > Fulton County > Atlanta (0.14)
- North America > United States > New York > New York County > New York City (0.04)
- Europe > Spain > Galicia > Madrid (0.04)
- Europe > Italy > Tuscany > Florence (0.04)
Graph Neural Networks for Travel Distance Estimation and Route Recommendation Under Probabilistic Hazards
Estimating the shortest travel time and providing route recommendation between different locations in a city or region can quantitatively measure the conditions of the transportation network during or after extreme events. One common approach is to use Dijkstra's Algorithm, which produces the shortest path as well as the shortest distance. However, this option is computationally expensive when applied to large-scale networks. This paper proposes a novel fast framework based on graph neural networks (GNNs) which approximate the single-source shortest distance between pairs of locations, and predict the single-source shortest path subsequently. We conduct multiple experiments on synthetic graphs of different size to demonstrate the feasibility and computational efficiency of the proposed model. In real-world case studies, we also applied the proposed method of flood risk analysis of coastal urban areas to calculate delays in evacuation to public shelters during hurricanes. The results indicate the accuracy and computational efficiency of the GNN model, and its potential for effective implementation in emergency planning and management.
- North America > United States > North Carolina (0.04)
- North America > United States > New York > New York County > Manhattan (0.04)
- North America > United States > Illinois > Champaign County > Urbana (0.04)
- (2 more...)
- Transportation > Infrastructure & Services (1.00)
- Transportation > Ground > Road (0.46)
On Classification with Large Language Models in Cultural Analytics
Bamman, David, Chang, Kent K., Lucy, Li, Zhou, Naitian
In this work, we survey the way in which classification is used as a sensemaking practice in cultural analytics, and assess where large language models can fit into this landscape. We identify ten tasks supported by publicly available datasets on which we empirically assess the performance of LLMs compared to traditional supervised methods, and explore the ways in which LLMs can be employed for sensemaking goals beyond mere accuracy. We find that prompt-based LLMs are competitive with traditional supervised models for established tasks, but perform less well on de novo tasks. In addition, LLMs can assist sensemaking by acting as an intermediary input to formal theory testing.
- North America > United States > Minnesota > Hennepin County > Minneapolis (0.14)
- North America > Mexico > Mexico City > Mexico City (0.04)
- Asia > Thailand > Bangkok > Bangkok (0.04)
- (8 more...)
- Law (0.68)
- Government (0.67)
- Information Technology > Artificial Intelligence > Natural Language > Large Language Model (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Neural Networks > Deep Learning (0.70)
- Information Technology > Artificial Intelligence > Machine Learning > Performance Analysis > Accuracy (0.46)
Differentially Private Data Release on Graphs: Inefficiencies and Unfairness
Fioretto, Ferdinando, Sen, Diptangshu, Ziani, Juba
Networks are crucial components of many sectors, including telecommunications, healthcare, finance, energy, and transportation.The information carried in such networks often contains sensitive user data, like location data for commuters and packet data for online users. Therefore, when considering data release for networks, one must ensure that data release mechanisms do not leak information about individuals, quantified in a precise mathematical sense. Differential Privacy (DP) is the widely accepted, formal, state-of-the-art technique, which has found use in a variety of real-life settings including the 2020 U.S. Census, Apple users' device data, or Google's location data. Yet, the use of DP comes with new challenges, as the noise added for privacy introduces inaccuracies or biases and further, DP techniques can also distribute these biases disproportionately across different populations, inducing fairness issues. The goal of this paper is to characterize the impact of DP on bias and unfairness in the context of releasing information about networks, taking a departure from previous work which has studied these effects in the context of private population counts release (such as in the U.S. Census). To this end, we consider a network release problem where the network structure is known to all, but the weights on edges must be released privately. We consider the impact of this private release on a simple downstream decision-making task run by a third-party, which is to find the shortest path between any two pairs of nodes and recommend the best route to users. This setting is of highly practical relevance, mirroring scenarios in transportation networks, where preserving privacy while providing accurate routing information is crucial. Our work provides theoretical foundations and empirical evidence into the bias and unfairness arising due to privacy in these networked decision problems.
- North America > United States > Virginia (0.04)
- North America > United States > New York (0.04)
- North America > United States > Illinois > Cook County > Chicago (0.04)
- Africa > South Sudan > Equatoria > Central Equatoria > Juba (0.04)
BACON: Supercharge Your VLM with Bag-of-Concept Graph to Mitigate Hallucinations
Yang, Zhantao, Feng, Ruili, Yan, Keyu, Wang, Huangji, Wang, Zhicai, Zhu, Shangwen, Zhang, Han, Xiao, Jie, Wu, Pingyu, Zhu, Kai, Chen, Jixuan, Xie, Chen-Wei, Mao, Chaojie, Yang, Yue, Zhang, Hongyang, Liu, Yu, Cheng, Fan
This paper presents Bag-of-Concept Graph (BACON) to gift models with limited linguistic abilities to taste the privilege of Vision Language Models (VLMs) and boost downstream tasks such as detection, visual question answering (VQA), and image generation. Since the visual scenes in physical worlds are structured with complex relations between objects, BACON breaks down annotations into basic minimum elements and presents them in a graph structure. Element-wise style enables easy understanding, and structural composition liberates difficult locating. Careful prompt design births the BACON captions with the help of public-available VLMs and segmentation methods. In this way, we gather a dataset with 100K annotated images, which endow VLMs with remarkable capabilities, such as accurately generating BACON, transforming prompts into BACON format, envisioning scenarios in the style of BACONr, and dynamically modifying elements within BACON through interactive dialogue and more. Wide representative experiments, including detection, VQA, and image generation tasks, tell BACON as a lifeline to achieve previous out-of-reach tasks or excel in their current cutting-edge solutions.
- Transportation > Passenger (0.93)
- Transportation > Ground > Road (0.68)
- Energy > Oil & Gas (0.68)
A lexicon obtained and validated by a data-driven approach for organic residues valorization in emerging and developing countries
Rakotomalala, Christiane, Paillat, Jean-Marie, Feder, Frédéric, Avadí, Angel, Thuriès, Laurent, Vermeire, Marie-Liesse, Médoc, Jean-Michel, Wassenaar, Tom, Hottelart, Caroline, Kieffer, Lilou, Ndjie, Elisa, Picart, Mathieu, Tchamgoue, Jorel, Tulle, Alvin, Valade, Laurine, Boyer, Annie, Duchamp, Marie-Christine, Roche, Mathieu
The text mining method presented in this paper was used for annotation of terms related to biological transformation and valorization of organic residues in agriculture in low and middle-income country. Specialized lexicon was obtained through different steps: corpus and extraction of terms, annotation of extracted terms, selection of relevant terms.
- Africa > Saint Helena, Ascension and Tristan da Cunha (0.29)
- North America > Central America (0.14)
- Asia > North Korea (0.14)
- (132 more...)