Urbanization enhances channel and surface runoff: A quantitative analysis using both physical and empirical models over the Yangtze River basin

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 635, P. 131194 - 131194

Published: April 6, 2024

Language: Английский

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Deep learning for cross-domain data fusion in urban computing: Taxonomy, advances, and outlook

Information Fusion, Journal Year: 2024, Volume and Issue: 113, P. 102606 - 102606

Published: Aug. 5, 2024

Language: Английский

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Learning visual features from figure-ground maps for urban morphology discovery

Computers Environment and Urban Systems, Journal Year: 2024, Volume and Issue: 109, P. 102076 - 102076

Published: Feb. 3, 2024

Language: Английский

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A multimodal data fusion model for accurate and interpretable urban land use mapping with uncertainty analysis

International Journal of Applied Earth Observation and Geoinformation, Journal Year: 2024, Volume and Issue: 129, P. 103805 - 103805

Published: April 4, 2024

Urban land use patterns can be more accurately mapped by fusing multimodal data. However, many studies only consider socioeconomic and physical attributes within parcels, neglecting spatial interaction uncertainty caused To address these issues, we constructed a data fusion model (MDFNet) to extract natural physical, socioeconomic, connectivity ancillary information from We also established an analysis framework based on generalized additive learnable weight module explain data-driven uncertainty. Shenzhen was chosen as the demonstration area. The results demonstrated effectiveness of proposed method, with test accuracy 0.882 Kappa 0.858. Uncertainty indicated contributions in overall task 0.361, 0.308, 0.232 for remote sensing, social taxi trajectory data, respectively. study illuminates collaborative mechanism various categories, offering accurate interpretable method mapping urban distribution patterns.

Language: Английский

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UrbanCLIP: Learning Text-enhanced Urban Region Profiling with Contrastive Language-Image Pretraining from the Web

Proceedings of the ACM Web Conference 2022, Journal Year: 2024, Volume and Issue: unknown, P. 4006 - 4017

Published: May 8, 2024

Language: Английский

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Zero-shot urban function inference with street view images through prompting a pretrained vision-language model

International Journal of Geographical Information Science, Journal Year: 2024, Volume and Issue: 38(7), P. 1414 - 1442

Published: May 22, 2024

Inferring urban functions using street view images (SVIs) has gained tremendous momentum. The recent prosperity of large-scale vision-language pretrained models sheds light on addressing some long-standing challenges in this regard, for example, heavy reliance labeled samples and computing resources. In paper, we present a novel prompting framework enabling the model CLIP to effectively infer fine-grained with SVIs zero-shot manner, that is, without training. UrbanCLIP comprises an taxonomy several function prompt templates, order (1) bridge abstract categories concrete object types can be readily understood by CLIP, (2) mitigate interference SVIs, street-side trees vehicles. We conduct extensive experiments verify effectiveness UrbanCLIP. results indicate largely surpasses competitive supervised baselines, e.g. fine-tuned ResNet, its advantages become more prominent cross-city transfer tests. addition, UrbanCLIP's performance is considerably better than vanilla CLIP. Overall, simple yet effective inference, showcases potential foundation geospatial applications.

Language: Английский

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A review of crowdsourced geographic information for land-use and land-cover mapping: current progress and challenges

International Journal of Geographical Information Science, Journal Year: 2024, Volume and Issue: 38(11), P. 2183 - 2215

Published: July 14, 2024

The emergence of crowdsourced geographic information (CGI) has markedly accelerated the evolution land-use and land-cover (LULC) mapping. This approach taps into collective power public to share spatial information, providing a relevant data source for producing LULC maps. Through analysis 262 papers published from 2012 2023, this work provides comprehensive overview field, including prominent researchers, key areas study, major CGI sources, mapping methods, scope research. Additionally, it evaluates pros cons various sources methods. findings reveal that while applying with labels is common way by using analysis, limited incomplete coverage other quality issues. In contrast, extracting semantic features interpretation often requires integrating multiple datasets remote sensing imagery, alongside advanced methods such as ensemble deep learning. paper also delves challenges posed in explores promising potential introducing large language models overcome these hurdles.

Language: Английский

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High-resolution mapping of GDP using multi-scale feature fusion by integrating remote sensing and POI data

International Journal of Applied Earth Observation and Geoinformation, Journal Year: 2024, Volume and Issue: 129, P. 103812 - 103812

Published: April 9, 2024

High-resolution spatial distribution maps of GDP are essential for accurately analyzing economic development, industrial layout, and urbanization processes. However, the currently accessible gridded datasets limited in number resolution. Furthermore, high-resolution mapping remains a challenge due to complex sectoral structure GDP, which encompasses agriculture, industry, services. Meanwhile, multi-source data with high resolution can effectively reflect level regional development. Therefore, we propose multi-scale fusion residual network (Res-FuseNet) designed estimate grid density by integrating remote sensing POI data. Specifically, Res-FuseNet extracts features relevant different sectors. It constructs joint representation through mechanism estimates three sectors using connections. Subsequently, obtained correcting overlaying each sector county-level statistical The 100-meter map urban agglomeration middle reaches Yangtze River 2020 was successfully generated this method. experimental results confirm that outperforms machine learning models baseline model significantly training across at town-level. R2 values 0.69, 0.91, 0.99, respectively, while town-level evaluation also exhibit accuracy (R2=0.75). provides an innovative method, reveal characteristics structures fine-scale disparities within cities, offering robust support sustainable

Language: Английский

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Context-aware multi-head self-attentional neural network model for next location prediction

Transportation Research Part C Emerging Technologies, Journal Year: 2023, Volume and Issue: 156, P. 104315 - 104315

Published: Sept. 11, 2023

Accurate activity location prediction is a crucial component of many mobility applications and particularly required to develop personalized, sustainable transportation systems. Despite the widespread adoption deep learning models, next models lack comprehensive discussion integration mobility-related spatio-temporal contexts. Here, we utilize multi-head self-attentional (MHSA) neural network that learns transition patterns from historical visits, their visit time duration, as well surrounding land use functions, infer an individual's location. Specifically, adopt point-of-interest data latent Dirichlet allocation for representing locations' contexts at multiple spatial scales, generate embedding vectors features, learn predict with MHSA network. Through experiments on two large-scale GNSS tracking datasets, demonstrate proposed model outperforms other state-of-the-art reveal contribution various model's performance. Moreover, find trained population achieves higher performance fewer parameters than individual-level due collective movement patterns. We also conducted in recent past one week before has largest influence current prediction, showing subset sufficient obtain accurate result. believe vital context-aware prediction. The gained insights will help understand promote implementation applications.

Language: Английский

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Global anthropogenic effects on meteorological—hydrological—soil moisture drought propagation: Historical analysis and future projection

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132755 - 132755

Published: Jan. 1, 2025

Language: Английский

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