A novel nonnegative matrix factorization-based model for attributed graph clustering by incorporating complementary information

Expert Systems with Applications, Год журнала: 2023, Номер 242, С. 122799 - 122799

Опубликована: Дек. 2, 2023

Attributed graph clustering is a prominent research area, catering to the increasing need for understanding real-world systems by uncovering exhaustive meaningful latent knowledge from heterogeneous spaces. Therefore, critical challenge of this problem strategy used extract and integrate information structure attribute sources. To end, in paper, we propose novel Nonnegative Matrix Factorization (NMF)-based model attributed clustering. In method, firstly, filter spaces noise irrelevant applying Symmetric NMF during task, respectively. Then, overcome heterogeneity discovered partitions spaces, suggest new regularization term inject complementary partition into transforming them their pairwise similarity which are homogeneous. Simultaneously, setting orthogonality constraints on communities, encourage representation distinct non-overlapping communities within graph. Finally, collect all these terms unified framework learn containing consensus attributes. Then iterative multiplicative updating proposed solve model, its convergence proven theoretically. Our experiments nine popular networks illustrate supremacy our methods among eleven widely recognized stat-of-the-arts accurately matching ground truth quality-based metrics.

Язык: Английский

---

Identification and optimization of ecological security pattern in arid inland basin based on ordered weighted average and ant colony algorithm: A case study of Shule River basin, NW China

Ecological Indicators, Год журнала: 2023, Номер 154, С. 110588 - 110588

Опубликована: Июль 5, 2023

Optimization of ecological security patterns (ESP) is an important way to implement land space restoration and maintain regional sustainable development. How comprehensively identify ESP while maintaining the balanced development each ecosystem service key issue in identification construction at present. Using data on use, meteorology, vegetation biomass socio-economic statistics, quality six typical services Shule River basin (SRB) 2010 2020 were calculated for food supply, water conservation, carbon fixation oxygen release, habitat quality, soil conservation culture leisure. The ordered weighted averaging (OWA) model was introduced priority areas as source, minimum cumulative resistance (MCR) used extract corridors nodes. Based ant colony algorithm optimal paths study area, spatial scope corridors, potential recovery points, construct optimization ESP. results show that temporal differences SRB significant, showing characteristics overall dispersion small concentration. 76 source patches with a total area 2.29 × 104 km2; 54 length 3161.87 km; 36 nodes identified. Overall, shows network complete but there still room optimization, local problems are prominent. extracted 4.21 km2, 4 points. Finally, "two two belts, three areas" determined.

Язык: Английский

---

Integrating spatial carbon factors into ecological network construction in an energy-intensive megaregion toward multi-objective synergy in northern China

Environmental Impact Assessment Review, Год журнала: 2024, Номер 106, С. 107480 - 107480

Опубликована: Фев. 29, 2024

Язык: Английский

---

Urban biodiversity conservation: A framework for ecological network construction and priority areas identification considering habit differences within species

Journal of Environmental Management, Год журнала: 2024, Номер 365, С. 121512 - 121512

Опубликована: Июнь 18, 2024

The construction of ecological networks within the context urbanization is an effective approach to cope with challenges urban biodiversity decline, representing a crucial goal in planning and development. However, existing studies often overlook richness uniqueness species communities by homogenizing traits same class. This study proposes framework for constructing optimizing focused on differential conservation By classifying birds into three groups (specialists water, forest or areas) based their requirements tolerance, we constructed network tailored distinct migratory dispersal patterns. We then identified strategic areas including pinch points, barriers, breakpoints specific each bird group. Our findings reveal notable variations suitable habitat distribution among different environments. Corridor layouts varied according preferences Despite these differences, built-up persist as central hubs habitats 75% species, peripheral mountain-plain transition constituting 63% corridors. emphasizes critical role maintaining connectivity. Prioritizing connectivity between distant natural spaces imperative. innovatively classifies constructs identify diverse species-specific attributes, providing valuable spatial information land guiding solutions enhance target species. While primary focus Beijing, our broadly applicable global management green under challenges. Overall, this offers innovative insights development serves decision support prioritizing actions.

Язык: Английский

---

Study on habitat suitability change and habitat network of rare wintering cranes in important international wetlands

Ecological Indicators, Год журнала: 2023, Номер 154, С. 110692 - 110692

Опубликована: Июль 21, 2023

Chongming Dongtan wetland is a typical estuarine wetland, located in District, Shanghai, China, with high ecological significance. The protection of wintering crane's habitat has attracted the wide attention international community. Because importance region biodiversity and crane habitats, it great reference value to study suitability changes rare cranes spatial temporal distribution characteristics corridors characteristics, improve quality habitats globally important wetlands. Based on remote sensing image data field survey cranes, this obtained land use change from 1986 2021 by ENVI ArcGIS10.8 software, evaluated 36 years GIS technology, constructed corridor using minimum cumulative resistance model(MCR). results showed that 2021, number four general downward trend. In past years, internationally gradually changed suitable area an unsuitable area. areas are mainly distributed eastern northern parts area, western construction deteriorating. overall shows trend low east west, degree obstruction strong south weak north. There 208 potential for Dongtan, total length 377.12 km. Get 127 Habitat nodes. density part significantly higher than region, space well connected. Finally, proposes identification based gravity model analysis network structure graph theory, which provides improving stability means node optimization, stepping stone increase restoration. This different previous studies large-scale conditions such as cities or urban coastal zones. From perspective regional species value, helpful optimize pattern overwintering provide method basis At same time, only Shanghai. Wintering most biological resources networks can effectively promote development

Язык: Английский

---

Integrating CVOR and circuit theory models to construct and reconstruct ecological networks: A case study from the Tacheng-Emin Basin, China

Ecological Indicators, Год журнала: 2024, Номер 165, С. 112170 - 112170

Опубликована: Май 26, 2024

The ecological sustainability of arid and semi-arid areas is under increasing threat due to global climate change, well-established networks are essential for improving landscape connectivity conserving biodiversity. This study takes the Tacheng-Emin Basin in China as an example. Based on "source-resistance-corridor" research paradigm sustainable development theory, "contribution-organization-vitality-resilience" circuit theory ecosystem incorporated into construction networks. results show that (1) service value basin 5.85 × 1010 Yuan, medium health level, security hierarchy has low level uncoordinated problems. (2) total integrated resistance surface dominated by natural resistance, characterized evident fragmentation. (3) 25 sources, 58 corridors, 32 stepping stones, 39 obstacle points, 46 fracture points were extracted at threshold 10,000 model. (4) reconstruction cost network 1,007.41 104 reconstructed have increased 2 1 stone, reduced 3 while closure structure been significantly improved developed toward a stable multi-grid structure. (5) zoning protection restoration scheme "one ring, one belt, sink, multiple zones, corridors" conducive basin. this can serve reference management regions Central Asia.

Язык: Английский

---

Improving the ecological network optimization with landscape connectivity: a case study of Neijiang City, Sichuan Province

Environmental Science and Pollution Research, Год журнала: 2023, Номер 30(19), С. 54753 - 54769

Опубликована: Март 7, 2023

Язык: Английский

---

Exploring the optimization and management methods of ecological networks based on the cluster mode: A case study of Wuhan Metropolis, China

Land Use Policy, Год журнала: 2023, Номер 137, С. 107021 - 107021

Опубликована: Дек. 19, 2023

Язык: Английский

---

Synergistic ecological network approach for sustainable development of highly urbanized area in the Bay Bottom region: A study in Chengyang District, Qingdao

Ecological Indicators, Год журнала: 2023, Номер 158, С. 111443 - 111443

Опубликована: Дек. 21, 2023

Rapid urbanization has put the marine environment under great threat, and cities in Bay Bottom area are more likely to cause a large number of ecological problems urban development construction due their special land-sea interaction environment. Ecological network is an effective solution coordinate regional protection sustainable development. This study focused on Chengyang District, one highly urbanized areas at bottom Jiaozhou Qingdao, China, was using Morphological Spatial Pattern Analysis (MSPA) initially identify source extracting important conjunction with landscape connectivity assessment, determining resistance values based importance ecosystem services, optimizing by minimum cumulative model (MCR) structure analysis. The results indicated that: (1) habitat District severely fragmented, significant features terms area, type corridor distribution, low percentage identification characteristic types such as reservoirs, wetlands, aquaculture ponds, while corridors concentrated rivers bays, there fragmentation inland city. (2) Preliminarily, 15 sites were identified, mainly distributed vicinity Wetland, Jihongtan Reservoir Laoshan Mountain, among which, Wetland most District. Thirty-two nodes 24 constructed. (3) By increasing sources optimized forms spatial pattern "four cores, three belts, four districts", proposes formulates targeted management strategies promote bay. In addition, this provides new reference for global bay improving area.

Язык: Английский

---

Optimization of composite ecological network patterns in Anhui Province based on multi-functional coupling of ecology-climate-economy

Ecological Indicators, Год журнала: 2024, Номер 166, С. 112524 - 112524

Опубликована: Авг. 23, 2024

Amidst global climate warming and rapid urbanization, ecological environmental issues are becoming increasingly prominent. Constructing a multi-functional coupled network pattern is essential for promoting the synergy among protection, regulation, economic development. This study focuses on Anhui Province, characterized by diverse topographical features. Utilizing "source sink" theory, employs combination of Morphological Spatial Pattern Analysis (MSPA), landscape connectivity indices, local spatial autocorrelation, circuit theory to construct single-factor networks biodiversity conservation, thermal environment mitigation, The analysis elements such as "source" areas, corridors, strategic points, nodes led formation an optimized multi-level, composite based ecology, climate, economy. results indicate that: (1) Province has 14 landscapes 31 "sink" landscapes. There 29 21 Additionally, there 30 22 biological migration corridors primarily concentrated in Northern Central while distributed throughout province. Economic relatively dense dispersed across various cities showing trend expansion all directions; (2) In multi-level network, total length surpasses which turn surpass corridors. terms area, exceed optimal widths first class secondary outlined follows: at 1000 m 6000 m, 2000 m; (3) Overlaying multi-objective identified 228 key points 501 disturbance points. Approximately 7.52 % area locations should be allocated (4) proposed optimization scheme identifies critical areas restoration network. lengths main migration, economy 2130.20 km, 2606.14 1134.63 km respectively. core zones 1166.42 km2 2999.95 2902.11 can effectively enhance regional ecosystem services, alleviate urban heat island effects, promote sustainable addresses existing gaps research provides scientific basis technical support coordinated development globally.

Язык: Английский

---