Results 161 to 170 of about 5,483,277 (408)

Automated Generalization of Facility Points-of-Interest With Service Area Delimitation

IEEE Access, 2019
Point cluster generalization is a major concern in cartography. This problem is complicated by how to preserve the distribution patterns (e.g., density) of points during the process of deriving small-scale maps from a large-scale map.
Wenhao Yu, Yifan Zhang, Zhanlong Chen
doaj   +1 more source

Spatial-RAG: Spatial Retrieval Augmented Generation for Real-World Spatial Reasoning Questions [PDF]

arXiv
Spatial reasoning remains a challenge for Large Language Models (LLMs), which struggle with spatial data retrieval and reasoning. We propose Spatial Retrieval-Augmented Generation (Spatial-RAG), a framework that extends RAG to spatial tasks by integrating sparse spatial retrieval (spatial databases) and dense semantic retrieval (LLM-based similarity ...
arxiv  

Fuzzy spatial OQL for fuzzy knowledge discovery in databases [PDF]

, 1998
Nara Martini Bigolin, Christophe Marsala
openalex   +1 more source

The role of space in urban housing market [PDF]

, 2011
This presentation emphasizes the quantitative analysis of space in relation to hedonic housing price models. Three aspects of space will be highlighted: i) spatial heterogeneity (spatial patterns): hedonic housing amenities may be valued differently in ...
Bhattacharjee, Arnab, De Castro, Eduardo Anselmo, Marques, Joao Lourenco   +2 more
core   +2 more sources

Unsupervised non‐small cell lung cancer tumor segmentation using cycled generative adversarial network with similarity‐based discriminator

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Tumor segmentation is crucial for lung disease diagnosis and treatment. Most existing deep learning‐based automatic segmentation methods rely on manually annotated data for network training. Purpose This study aims to develop an unsupervised tumor segmentation network smic‐GAN by using a similarity‐driven generative adversarial ...
Chengyijue Fang, Xiaoyang Li, Yidong Yang   +2 more
wiley   +1 more source

Integrating Space, Time, Version and Scale Using Alexandrov Topologies [PDF]

arXiv, 2013
This article introduces a novel approach to spatial database design. Instead of extending the canonical Solid-Face-Edge-Vertex schema by, say, "hypersolids" these classes are generalised to a common type SpatialEntity, and the individual BoundedBy relations between two consecutive classes are generalised to one BoundedBy relation on SpatialEntity ...
arxiv  

Linear approximation of planar spatial databases using transitive-closure logic [PDF]

, 2000
Floris Geerts, Bart Kuijpers
openalex   +1 more source

High‐Fat and Low‐Carbohydrate Dietary Environments Are Linked to Reduced Idiopathic Epilepsy Incidence and Prevalence

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Dietary manipulations like ketogenic diets are established interventions for recalcitrant epilepsy. However, it remains unknown whether specific macronutrient exposure through dietary environments could possibly extend to primary preventive qualities, associated with changes in epilepsy disease burden (prevalence and incidence).
Duan Ni, Alistair Senior, David Raubenheimer, Stephen J. Simpson, Ralph Nanan   +4 more
wiley   +1 more source

Knowledge Discovery In GIS Data [PDF]

arXiv, 2016
Intelligent geographic information system (IGIS) is one of the promising topics in GIS field. It aims at making GIS tools more sensitive for large volumes of data stored inside GIS systems by integrating GIS with other computer sciences such as Expert system (ES) Data Warehouse (DW), Decision Support System (DSS), or Knowledge Discovery Database (KDD).
arxiv  

Research on data consistency in spatial database system [PDF]

, 2000
Xinyan Zhu, Yi Wen, LI Deren, Jianya Gong   +3 more
openalex   +1 more source