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Kappa coefficient
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The purpose of the study "Monitoring surface water bodies changes from sentinel-2A imagery with modified normalized difference water index: Application in Dalat, Lam Dong, Viet Nam" is to identify surface water body changes using Sentinel-2 MSI (Multi-Spectral Instrument) data, one of the latest types of remote sensing satellite data. The results of the research show that by using Sentinel-2 MSI imagery, MNDWI (Modified Normalized Water Index) is the appropriate parameter to detect surface water areas in the studied area, with an overall accuracy > 0.92 and Kappa coefficient > 0.84.
10p
tukhauquantuong1011
22-04-2024
4
2
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Mangrove forests, typically found along tropical and subtropical coastlines, have a crucial role in preventing coastal erosion, mitigating the effects of wave actions, and safeguarding coastal habitats. This study utilized PlanetScope mangrove forests and a Combined Mangrove Recognition Index (CMRI), which was suitable for detecting mangrove cover along the coast of Tien Yen district with an overall accuracy of over 93.0% and a Kappa coefficient greater than 0.90 for the selected years.
13p
vispacex
16-11-2023
8
2
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The main objectives of this study were to: (1) test and select the suitable vegetation index for mapping the spatio-temporal extent of land use/cover in Xaythany District, Vientiane, Lao PDR using Sentinel-2A/B from 2019 to 2021; (2) quantify the changes in the spatio-temporal extent of land use/cover in Xaythany District during 2019-2021; (3) determine the drivers responsible for the changes in the extent of land use/cover, forest cover for providing better solutions how to manage forests in a sustainable manner in Xaythany District.
11p
vikoenigsegg
26-09-2022
9
4
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The statistical validities of the official Japanese classifications of activities of daily living (ADLs), including bedriddenness ranks (BR) and cognitive function scores (CFS), have yet to be assessed. To this aim, we evaluated the ability of BR and CFS to assess ADLs using inter-rater reliability and criterion-related validity.
10p
viisaacnewton
25-04-2022
15
4
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This study focused on finding out the criteria to evaluate research projects in education. We used a mixed methods research, including a literature review, focus group interviews with experts, and a survey of 140 lecturers from 5 universities of education in Vietnam and 33 lecturers who are teaching four majors from the University of Education, Vietnam National University. The necessity, suitability, and reliability of the set of criteria in evaluating the thesis in the field of educational science were examined.
15p
caygaocaolon6
22-07-2020
20
1
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This study presents a land use pattern classification of satellite imagery. The Machine learning algorithms are overseen to pattern classifications. The supervised classifier is identifying the classes using trained set. Compiled classification has to be improvised using efficient algorithms with appropriate threshold values. The statistical significance of satellite image classifies into essential classes is of greater importance in remote sensing pattern classification methods.
10p
caygaocaolon2
14-03-2020
13
0
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