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  • Article
  • Open Access

How Well Do Current Geoportals Support Geodata Discovery? An Empirical Study

  • Susanna Ankama,
  • Auriol Degbelo,
  • Erich Naoseb,
  • Christin Henzen and
  • Lars Bernard
ISPRS Int. J. Geo-Inf.2026, 15(2), 82;https://doi.org/10.3390/ijgi15020082 
(registering DOI)

14 February 2026

Implementing effective geospatial data discovery mechanisms in geoportals is crucial for facilitating easy access to geospatial data and services. Despite existing efforts to formulate geoportal design requirements, understanding end-user issues beyo...

  • Article
  • Open Access

Semi-Automated Reporting from Environmental Monitoring Data Using a Large Language Model-Based Chatbot

  • Angelica Lo Duca,
  • Rosa Lo Duca,
  • Arianna Marinelli,
  • Donatella Occhiuto and
  • Alessandra Scariot
ISPRS Int. J. Geo-Inf.2026, 15(2), 80;https://doi.org/10.3390/ijgi15020080 
(registering DOI)

14 February 2026

Producing high-quality analytical reports for the environmental domain is typically time-consuming and requires significant human expertise. This paper describes MeteoChat, a semi-automatic framework for efficiently generating specialized environment...

  • Article
  • Open Access
ISPRS Int. J. Geo-Inf.2026, 15(2), 81;https://doi.org/10.3390/ijgi15020081 
(registering DOI)

14 February 2026

Contingency epidemic outbreaks, such as the novel coronavirus (COVID-19) pandemic in 2020, have underscored the vital function of public health emergency response systems within national strategic frameworks. Public health surveillance and early warn...

  • Article
  • Open Access
ISPRS Int. J. Geo-Inf.2026, 15(2), 79;https://doi.org/10.3390/ijgi15020079 
(registering DOI)

14 February 2026

Exploring future habitat quality changes in the Mid-Section of the Tianshan Mountains (MSTM) is crucial for regional biodiversity conservation. This study utilizes climate projection data from CMIP6 and integrates the SD-PLUS-InVEST analytical framew...

  • Article
  • Open Access
ISPRS Int. J. Geo-Inf.2026, 15(2), 78;https://doi.org/10.3390/ijgi15020078 
(registering DOI)

14 February 2026

General-purpose large language models excel at open-domain question answering, but in railway operation and maintenance (O&M) scenarios they still suffer from hallucinated knowledge and poor domain adaptation. In practice, railway O&M knowled...

  • Article
  • Open Access
ISPRS Int. J. Geo-Inf.2026, 15(2), 77;https://doi.org/10.3390/ijgi15020077 
(registering DOI)

14 February 2026

Cropland non-agriculturalization (CNA) threatens food security, ecosystem services, and sustainable development amid accelerating global urbanization. However, existing monitoring methods are often retrospective and lack adequate spatial and temporal...

  • Article
  • Open Access

Location Prediction of Urban Fire Station Based on GMM Clustering and Machine Learning

  • Xiaomin Lu,
  • Lijuan Wang,
  • Haowen Yan,
  • Haoran Song,
  • Yan Wang,
  • Zhiyi Zhang and
  • Na He

Most machine learning (ML)-based facility location studies utilize uniform grid partitioning, often overlooking spatial heterogeneity. This limitation can compromise the validity and practical applicability of the resulting site selections. In respon...

  • Review
  • Open Access
34 Views
25 Pages

Despite advancements in navigation apps for wheelchair users, there is no consensus on which environmental factors to prioritize for personalized accessible routes. This scoping review synthesizes factors influencing wheelchair mobility in urban sett...

  • Article
  • Open Access
41 Views
21 Pages

Background: Research on spatial imagery as perceived by humans is an important frontier for deepening the theoretical understanding of Tourism Destination Image and promoting sustainable urban development. Significance: This study, from the perspecti...

  • Article
  • Open Access
176 Views
23 Pages

Spatial analyses of built-up areas based on aggregated land cover data are inherently affected by the Modifiable Areal Unit Problem (MAUP). This study quantifies the influence of the data scale and the areal unit configuration on Lorenz-based measure...

  • Article
  • Open Access
179 Views
16 Pages

The conventional Two-Step Floating Catchment Area (2SFCA) method treats large-scale facilities as single centroids, leading to systematic under- and overestimation of spatial accessibility measures. To address this limitation, this study proposes a G...

  • Article
  • Open Access
134 Views
24 Pages

Transportation infrastructure is vital for sustaining communities and fostering economic development. Urbanization and climate change have led to the rapid deterioration of road transport systems, posing significant challenges for future sustainabili...

  • Article
  • Open Access
241 Views
24 Pages

Modern geo-information platforms commonly adopt multi-window map interfaces that integrate heterogeneous data, such as dynamic maps and live camera feeds. These interfaces impose high cognitive load and slow spatial event detection. Operators must ra...

  • Article
  • Open Access
222 Views
22 Pages

High-Definition (HD) Maps have become a cornerstone of autonomous vehicle (AV) technology, enabling precise localization, perception, and decision-making. Despite their increasing prominence in the automotive and geospatial industries, HD Maps remain...

  • Article
  • Open Access
256 Views
30 Pages

Duckweed/algal bloom-type black–odorous waters (DAWs) exhibit composite optical properties of vegetation and pollution, posing intractable remote sensing identification challenges in complex environments. Current methods suffer from three criti...

  • Article
  • Open Access
464 Views
25 Pages

Day–Night All-Sky Scene Classification with an Attention-Enhanced EfficientNet

  • Wuttichai Boonpook,
  • Peerapong Torteeka,
  • Kritanai Torsri,
  • Daroonwan Kamthonkiat,
  • Yumin Tan,
  • Asamaporn Sitthi,
  • Patcharin Kamsing,
  • Chomchanok Arunplod,
  • Utane Sawangwit and
  • Kijnaphat Suksod
  • + 1 author

All-sky cameras provide continuous hemispherical observations essential for atmospheric monitoring and observatory operations; however, automated classification of sky conditions in tropical environments remains challenging due to strong illumination...

  • Article
  • Open Access
157 Views
18 Pages

CAE-RBNN: An Uncertainty-Aware Model of Island NDVI Prediction

  • Zheng Xiang,
  • Cunjin Xue,
  • Ziyue Ma,
  • Qingrui Liu and
  • Zhi Li

The unique geographical isolation and climate sensitivity of island ecosystems make them valuable for ecological research. The Normalized Difference Vegetation Index (NDVI) is an important indicator when monitoring and evaluating these systems, and i...

  • Article
  • Open Access
389 Views
18 Pages

To develop targeted forest management strategies, management staff must understand the statistical relationships between forest aesthetic values and landscape metrics across specified distance ranges. However, as the existing studies based on distanc...

  • Article
  • Open Access
366 Views
29 Pages

Ensuring equitable and inclusive access to children’s extracurricular activity facilities represents a profound manifestation of educational equity and is crucial for promoting children’s holistic development and societal sustainability....

  • Article
  • Open Access
268 Views
21 Pages

Street layout has a significant effect on accessibility and intelligibility, which ultimately affects navigation and movement efficiency. While previous research has examined planned and unplanned street patterns, most studies focus on single-scale a...

  • Article
  • Open Access
271 Views
21 Pages

To enhance the autonomous navigation capability of intelligent agents in complex environments, this paper presents a visual localization algorithm for dynamic scenes that leverages multi-source information fusion. The proposed approach is built upon...

  • Article
  • Open Access
246 Views
24 Pages

Efficient level-of-detail (LOD) management is crucial for handling large-scale 3D meshes in BIM, GIS, and digital twin applications. In practice, both individual models and complex multi-mesh scenes require multi-resolution representations. Yet two p...

  • Article
  • Open Access
269 Views
19 Pages

The growing availability of spatial data from remote sensing, laser scanning (LiDAR), and photogrammetric techniques stimulates the dynamic development of methods for the automatic detection and classification of topographic objects. In recent years,...

  • Article
  • Open Access
312 Views
23 Pages

Kazakhstan, located in Central Asia, is experiencing faster warming than the global trend, making it an important region regarding the study of how climate change is affecting climatic zones. This research aims to identify projected shifts in Kö...

  • Article
  • Open Access
244 Views
25 Pages

Activity space represents the spatiotemporal interaction between individuals and their environment. While most studies measure potential activity space using short-term data, few have defined or measured its actual internal structure. This study intr...

  • Article
  • Open Access
274 Views
19 Pages

The urban physical environment is composed of multiple elements that collectively influence the spatial pattern of crime. Existing research has predominantly focused on the relationship between individual types of facilities and crime, yet there rema...

  • Article
  • Open Access
358 Views
22 Pages

This study presents a robust framework for optimizing the site selection of Electric Vehicle Charging Stations (EVCS) in Qatar by integrating a Geographic Information System (GIS) with a Multi-Criteria Decision-Making (MCDM) model. The core innovatio...

  • Article
  • Open Access
237 Views
16 Pages

This article discusses public transport fare evasion from the point of view of the relations between inspection actions and detected evasion, with the aim of improving the efficacy of the former. By applying spatial statistics methods to a large data...

  • Article
  • Open Access
277 Views
30 Pages

GNN approaches to property valuation typically rely on spatial proximity, assuming that nearby properties exhibit similar price patterns. In practice, this assumption often fails as neighborhood and administrative boundaries create sharp price discon...

  • Review
  • Open Access
296 Views
53 Pages

This study proposes a systematic framework for establishing ethical guidelines for GeoAI (Geospatial Artificial Intelligence), which integrates AI with spatial data science, GIS, and remote sensing. While general AI ethics have advanced through the O...

  • Article
  • Open Access
190 Views
26 Pages

With the development of the Internet of Things (IoT) and smart industry, the demand for high-precision indoor positioning is becoming increasingly urgent. Ultra-ideband (UWB) technology has become a research hotspot due to its centimeter-level rangin...

  • Article
  • Open Access
237 Views
25 Pages

Exploring the spatiotemporal evolution of building stock in African countries is of great significance for understanding the urbanization process, regional development disparities, and sustainable development pathways in the Global South. Integrating...

  • Article
  • Open Access
206 Views
25 Pages

Investigating the spatial distribution and dynamics of terrestrial carbon storage is vital for climate change mitigation. However, horizontal spatial analyses often overlook heterogeneity in complex terrains. Here, we focused on the Gonghe Basin on t...

  • Article
  • Open Access
240 Views
22 Pages

In a situation where cities are increasingly being developed vertically and complexly, a novel approach for analyzing vertical urban functional patterns is proposed. For this purpose, a multi-dimensional GDC (Geo Data Cube) consisting of spatial and...

  • Article
  • Open Access
301 Views
19 Pages

Spatial data has distinctive properties that differentiate it from non-spatial data. One prominent characteristic is spatial autocorrelation (SA). When machine learning techniques are applied for spatial data modeling, they require spatially explicit...

  • Article
  • Open Access
474 Views
29 Pages

This observation-based and explainable approach demonstrates the applicability of multi-source remote sensing for flood assessment in data-scarce regions, offering a robust scientific basis for flood management and spatial planning in monsoon-affecte...

  • Article
  • Open Access
222 Views
13 Pages

Spatial accessibility to healthcare services is commonly determined by three core components: demand, supply, and traffic speed. Although understanding which factors contribute to accessibility changes can help prioritize interventions to enhance acc...

  • Article
  • Open Access
388 Views
26 Pages

Data–Knowledge Collaborative Learning Framework for Cellular Traffic Forecasting via Enhanced Correlation Modeling

  • Keyi An,
  • Qiangjun Li,
  • Kaiqi Chen,
  • Min Deng,
  • Yafei Liu,
  • Senzhang Wang and
  • Kaiyuan Lei

Forecasting the spatio-temporal evolutions of cellular traffic is crucial for urban management. However, achieving accurate forecasting is challenging due to “complex correlation modeling” and “model-blindness” issues. Specifi...

  • Article
  • Open Access
290 Views
28 Pages

Pedestrian trajectory prediction plays a vital role in autonomous driving and intelligent surveillance systems. Graph neural networks (GNNs) have shown remarkable effectiveness in this task by explicitly modeling social interactions among pedestrians...

  • Article
  • Open Access
334 Views
22 Pages

Rebalancing shared bikes poses a significant challenge for dockless bike-sharing (DLBS) operators, as inevitable spatiotemporal mismatches between demand and supply lead to high redistribution costs. Despite its operational significance, empirical re...

  • Article
  • Open Access
354 Views
24 Pages

The walking accessibility of primary healthcare institutions (PHCIs) is a pivotal determinant of health equity. However, prior studies often lack a comprehensive assessment that integrates the spatiotemporal dynamics of both multi-faceted supply and...

  • Article
  • Open Access
321 Views
30 Pages

In the context of the “Dual Carbon” goals, accurately predicting the spatiotemporal evolution of urban Net Primary Productivity (NPP) is crucial for resilient urban planning. While recent studies have coupled land use models with ecosyste...

  • Article
  • Open Access
378 Views
22 Pages

This article studies the application of deep neural networks for automatic building detection in aerial RGB images. Special focus is put on accuracy robustness in both well-structured and poorly planned urban scenarios, which pose significant challen...

  • Article
  • Open Access
458 Views
30 Pages

Large language models (LLMs) have advanced geospatial artificial intelligence; however, geospatial knowledge-base question answering (GeoKBQA) remains underdeveloped. Prior systems have relied on handcrafted rules and have omitted the splitting of da...

  • Article
  • Open Access
379 Views
39 Pages

Population activity drives urban development, and high-spatiotemporal-resolution population distribution provides critical insights for refined urban management and social services. However, mixed population activity patterns and spatial heterogeneit...

  • Article
  • Open Access
411 Views
24 Pages

Indoor positioning systems (IPSs) are increasingly applied in indoor settings where satellite-based GNSS signals are unavailable, including museums and other cultural heritage spaces. Within the META-MUSEUM project, we present a pilot study integrati...

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ISPRS Int. J. Geo-Inf. - ISSN 2220-9964