latitude and longitude
- Transportation > Ground > Road (1.00)
- Transportation > Passenger (0.72)
A multi-view contrastive learning framework for spatial embeddings in risk modelling
Holvoet, Freek, Blier-Wong, Christopher, Antonio, Katrien
Incorporating spatial information, particularly those influenced by climate, weather, and demographic factors, is crucial for improving underwriting precision and enhancing risk management in insurance. However, spatial data are often unstructured, high-dimensional, and difficult to integrate into predictive models. Embedding methods are needed to convert spatial data into meaningful representations for modelling tasks. We propose a novel multi-view contrastive learning framework for generating spatial embeddings that combine information from multiple spatial data sources. To train the model, we construct a spatial dataset that merges satellite imagery and OpenStreetMap features across Europe. The framework aligns these spatial views with coordinate-based encodings, producing low-dimensional embeddings that capture both spatial structure and contextual similarity. Once trained, the model generates embeddings directly from latitude-longitude pairs, enabling any dataset with coordinates to be enriched with meaningful spatial features without requiring access to the original spatial inputs. In a case study on French real estate prices, we compare models trained on raw coordinates against those using our spatial embeddings as inputs. The embeddings consistently improve predictive accuracy across generalised linear, additive, and boosting models, while providing interpretable spatial effects and demonstrating transferability to unseen regions.
- North America > United States > New York > New York County > New York City (0.14)
- Europe > Switzerland (0.14)
- North America > Canada > Ontario > Toronto (0.14)
- (6 more...)
- Health & Medicine (1.00)
- Banking & Finance > Real Estate (0.90)
- Banking & Finance > Insurance (0.87)
- Energy > Renewable > Geothermal > Geothermal Energy Exploration and Development > Geophysical Analysis & Survey (0.35)
A Appendix A.1 Datasheet for UrbanKG Dataset
We have presented the UrbanKG dataset construction progress in Section 2. The detailed statistics of We implement all models by using PyTorch. All experiments are conducted on eight NVIDIA RTX 3090 GPUs. For example, [2020/4/1/4:20, (40.68, -74.01), 2020/4/1/4:26, (40.68, -73.99)] is Human Mobility: We construct human mobility dataset based on taxi service and bike trip data. The inflow and outflow of a POI can be calculated by counting the number of taxi passengers, taxi drivers and bikers, who enter and leave within a period of time. NYC mobility prediction, we calculate the inflow and outflow at each POI at 30-minute intervals from April 1st to June 31st, 2020.
- Transportation > Passenger (1.00)
- Transportation > Ground > Road (1.00)
Agent Context Protocols Enhance Collective Inference
Bhardwaj, Devansh, Beniwal, Arjun, Chaudhari, Shreyas, Kalyan, Ashwin, Rajpurohit, Tanmay, Narasimhan, Karthik R., Deshpande, Ameet, Murahari, Vishvak
AI agents have become increasingly adept at complex tasks such as coding, reasoning, and multimodal understanding. However, building generalist systems requires moving beyond individual agents to collective inference -- a paradigm where multi-agent systems with diverse, task-specialized agents complement one another through structured communication and collaboration. Today, coordination is usually handled with imprecise, ad-hoc natural language, which limits complex interaction and hinders interoperability with domain-specific agents. We introduce Agent context protocols (ACPs): a domain- and agent-agnostic family of structured protocols for agent-agent communication, coordination, and error handling. ACPs combine (i) persistent execution blueprints -- explicit dependency graphs that store intermediate agent outputs -- with (ii) standardized message schemas, enabling robust and fault-tolerant multi-agent collective inference. ACP-powered generalist systems reach state-of-the-art performance: 28.3 % accuracy on AssistantBench for long-horizon web assistance and best-in-class multimodal technical reports, outperforming commercial AI systems in human evaluation. ACPs are highly modular and extensible, allowing practitioners to build top-tier generalist agents quickly.
- North America > United States > California > San Francisco County > San Francisco (0.14)
- North America > United States > South Carolina > Horry County > Myrtle Beach (0.04)
- North America > United States > Montana (0.04)
- (15 more...)
- Health & Medicine (0.68)
- Banking & Finance (0.68)
- Consumer Products & Services > Travel (0.49)
- Transportation > Ground > Road (0.46)
DisBeaNet: A Deep Neural Network to augment Unmanned Surface Vessels for maritime situational awareness
Vemula, Srikanth, Franco, Eulises, Frye, Michael
Intelligent detection and tracking of the vessels on the sea play a significant role in conducting traffic avoidance in unmanned surface vessels(USV). Current traffic avoidance software relies mainly on Automated Identification System (AIS) and radar to track other vessels to avoid collisions and acts as a typical perception system to detect targets. However, in a contested environment, emitting radar energy also presents the vulnerability to detection by adversaries. Deactivating these Radiofrequency transmitting sources will increase the threat of detection and degrade the USV's ability to monitor shipping traffic in the vicinity. Therefore, an intelligent visual perception system based on an onboard camera with passive sensing capabilities that aims to assist USV in addressing this problem is presented in this paper. This paper will present a novel low-cost vision perception system for detecting and tracking vessels in the maritime environment. This novel low-cost vision perception system is introduced using the deep learning framework. A neural network, DisBeaNet, can detect vessels, track, and estimate the vessel's distance and bearing from the monocular camera. The outputs obtained from this neural network are used to determine the latitude and longitude of the identified vessel.
- North America > United States > California > Monterey County > Monterey (0.04)
- Europe > Greece (0.04)
Geotokens and Geotransformers
In transformer architectures, position encoding primarily provides a sense of sequence for input tokens. While the original transformer paper's method has shown satisfactory results in general language processing tasks, there have been new proposals, such as Rotary Position Embedding (RoPE), for further improvement. This paper presents geotokens, input components for transformers, each linked to a specific geological location. Unlike typical language sequences, for these tokens, the order is not as vital as the geographical coordinates themselves. To represent the relative position in this context and to keep a balance between the real world distance and the distance in the embedding space, we design a position encoding approach drawing from the RoPE structure but tailored for spherical coordinates.
GOP candidate blasts AP 'hit piece' as 'debunked' after adult website founder calls alleged profile a 'prank'
Bernie Moreno, a Republican U.S. Senate candidate from Ohio, discusses the GOP's eagerness to retake the Senate in November, the illegal immigration crisis and Nikki Haley's refusal to drop out of the primary race. Republican Ohio Senate candidate Bernie Moreno is blasting the Associated Press after a story published days before the primary election linking him to an adult online dating site, which a former intern has taken credit for creating, was called into question by the dating site's founder. On Friday, a post on X from one of the founders of the online site Adult Friend Finder, who says he wrote "most of the early code," seemingly rejected a key aspect of an Associated Press report days earlier that suggested "geolocation data," which is commonly understood as involving an IP address or GPS, linked the account to the area of a Moreno family home. "I reviewed all the available information and it showed that the account had only a single visit, no activity, no profile photo, consistent with a prank or someone just checking out the site," Andrew Conru, the engineer who founded Adult Friend Finder, wrote on social media. "The AP report seeming to claim that the available data proves the account was created in Florida is inaccurate, as location information is manually entered during the signup (sic) process. In reality, there appears to be no public geolocation data tied to the account."
- North America > United States > Ohio > Montgomery County > Vandalia (0.05)
- North America > United States > Florida > Broward County > Fort Lauderdale (0.05)
- North America > United States > Mississippi (0.05)
- North America > United States > District of Columbia > Washington (0.05)
Road Graph Generator: Mapping roads at construction sites from GPS data
Michałowska, Katarzyna, Holmestad, Helga Margrete Bodahl, Riemer-Sørensen, Signe
We present a method for road inference from GPS trajectories to map construction sites. This task introduces a unique challenge due to the erratic and non-standard movement patterns of construction machinery, which diverge significantly from typical vehicular traffic on established roads. Our method first identifies intersections in the road network that serve as critical decision points, and later connects them with edges, producing a graph, which subsequently can be used for planning and task-allocation. We demonstrate the effectiveness of our approach by mapping roads at a real-life construction site in Norway. In Norway, the building and construction sector contributes directly and indirectly to 15% of total greenhouse gas emissions (2019), with construction vehicles accounting for 1.5% of the total emissions (2021) [1, 2].
- Europe > Norway > Eastern Norway > Oslo (0.04)
- Asia > Middle East > Israel > Tel Aviv District > Tel Aviv (0.04)
GeoDecoder: Empowering Multimodal Map Understanding
Qi, Feng, Dai, Mian, Zheng, Zixian, Wang, Chao
This paper presents GeoDecoder, a dedicated multimodal model designed for processing geospatial information in maps. Built on the BeitGPT architecture, GeoDecoder incorporates specialized expert modules for image and text processing. On the image side, GeoDecoder utilizes GaoDe Amap as the underlying base map, which inherently encompasses essential details about road and building shapes, relative positions, and other attributes. Through the utilization of rendering techniques, the model seamlessly integrates external data and features such as symbol markers, drive trajectories, heatmaps, and user-defined markers, eliminating the need for extra feature engineering. The text module of GeoDecoder accepts various context texts and question prompts, generating text outputs in the style of GPT. Furthermore, the GPT-based model allows for the training and execution of multiple tasks within the same model in an end-to-end manner. To enhance map cognition and enable GeoDecoder to acquire knowledge about the distribution of geographic entities in Beijing, we devised eight fundamental geospatial tasks and conducted pretraining of the model using large-scale text-image samples. Subsequently, rapid fine-tuning was performed on three downstream tasks, resulting in significant performance improvements. The GeoDecoder model demonstrates a comprehensive understanding of map elements and their associated operations, enabling efficient and high-quality application of diverse geospatial tasks in different business scenarios.
- Information Technology > Artificial Intelligence > Representation & Reasoning (1.00)
- Information Technology > Artificial Intelligence > Natural Language > Text Processing (0.69)
- Information Technology > Artificial Intelligence > Natural Language > Large Language Model (0.68)
- Information Technology > Artificial Intelligence > Machine Learning > Neural Networks (0.47)
Memory efficient location recommendation through proximity-aware representation
Luo, Xuan, Huang, Mingqing, Lv, Rui, Zhao, Hui
Sequential location recommendation plays a huge role in modern life, which can enhance user experience, bring more profit to businesses and assist in government administration. Although methods for location recommendation have evolved significantly thanks to the development of recommendation systems, there is still limited utilization of geographic information, along with the ongoing challenge of addressing data sparsity. In response, we introduce a Proximity-aware based region representation for Sequential Recommendation (PASR for short), built upon the Self-Attention Network architecture. We tackle the sparsity issue through a novel loss function employing importance sampling, which emphasizes informative negative samples during optimization. Moreover, PASR enhances the integration of geographic information by employing a self-attention-based geography encoder to the hierarchical grid and proximity grid at each GPS point. To further leverage geographic information, we utilize the proximity-aware negative samplers to enhance the quality of negative samples. We conducted evaluations using three real-world Location-Based Social Networking (LBSN) datasets, demonstrating that PASR surpasses state-of-the-art sequential location recommendation methods
- Asia > China > Guangdong Province > Shenzhen (0.04)
- Europe > Switzerland > Basel-City > Basel (0.04)
- Asia > Taiwan (0.04)
- Asia > Macao (0.04)