Data classification

Low-rank representation (LRR) plays a significant role in image classification tasks due to its ability to capture the underlying structure and variations in image data. However, traditional low-rank representation-based dictionary learning methods struggle to leverage discriminative information effectively.

9p viling 11-10-2024 3 1   Download

In this study, we propose a novel approach using the oscillation characteristics of the RMS current as the input to machine learning models, combined with the confident learning technique. Using the oscillation characteristics obtained by taking a discrete Fourier transform (DFT) of the RMS current as model input, we aim to reduce the computational requirements of the machine learning models.

12p viling 11-10-2024 1 0   Download

In this paper, we research and propose a network attack detection framework using a 2-stage classification algorithm with an Autoencoder model, integrating online stream processing technology based on Apache Kafka and Spark technology.

17p viyoko 01-10-2024 3 1   Download

Impervious surface is an artificial surface that prevents water from seeping into the ground. Impervious surface is not only an indicator of the level of urbanization but also a key indicator of the quality of the urban environment. This article presents the results of an impervious surface classification in Ho Chi Minh City area from multi-temporal Landsat image data.

13p viyoko 01-10-2024 3 1   Download

Vietnam experiences increasing droughts throughout the dry season due to climate change, global warming, and human-caused activities like urbanization and deforestation. Drought hazard significantly impacts socioeconomic, agriculture, and the environment; it directly threatens human lives, livelihoods, food security, and environmental degradation.

13p vifaye 20-09-2024 4 1   Download

This is a retrospective review of all patients at Pathology Department, Hue Central Hospital with the diagnosis of nasopharyngeal carcinoma between January 1st 2017 and June 30th, 2018. The patient’s clinical data and histopathological findings are presented. The histopathological diagnosis was in accordance with the WHO 1991 classification table.

3p vinatisu 29-08-2024 3 2   Download

Bài giảng Phân tích không gian I (Basic Spatial Analysis) - Bài 4: Phân tích đơn lớp - Phân loại đối tượng. Những nội dung chính được trình bày trong chương này gồm có: Thang đo lường dữ liệu (levels of measurement), phân loại dữ liệu (data classification), phương pháp phân loại dữ liệu (data classification methods). Mời các bạn cùng tham khảo để biết thêm nội dung chi tiết!

41p zizaybay1107 19-07-2024 3 1   Download

This study extracts images from Taekwondo videos and generates skeleton data from frames using the Fast Forward Moving Picture Experts Group (FFMPEG) technique using MoveNet. After that, we use deep learning architectures such as Long Short-Term Memory Networks, Convolutional Long Short-Term Memory, and Longterm Recurrent Convolutional Networks to perform the poses classification tasks in Taegeuk in Jang lessons. This work presents two approaches. The first approach uses a sequence skeleton extracted from the image by Movenet.

26p dianmotminh02 03-05-2024 3 1   Download

The study was conducted by using the method of Data Envelopment Analysis (DEA) two stages. The first stage involves the calculation a score of efficiency through the DEA by using firm’s data while the second stage Regression Tobit Analysis used to identify significant factors influencing to technical efficiency in machinery industrial.

12p longtimenosee09 08-04-2024 6 1   Download

Lecture "Applied data science: Classification" includes content: Classification - logistic regression review ; classification evaluation metrics; the expected value framework;... We invite you to consult!

18p kimphuong1144 04-12-2023 5 3   Download

Bài giảng Khai phá dữ liệu (Data mining): Naïve Bayes Classification, chương này trình bày những nội dung về: giới thiệu Naïve Bayes Classification (NBC); mô hình toán; các dạng phân phối dùng trong NBC; các ví dụ và bài tập;... Mời các bạn cùng tham khảo chi tiết nội dung bài giảng!

36p diepkhinhchau 18-09-2023 18 8   Download

The research period of this study is from 2010 to 2017. The countries in the research sample are selected based on complete market data including six Southeast Asian countries and 2,166 listed companies. by GICS (Global Industry Classification Standard).

26p nguathienthan10 23-02-2021 29 3   Download

This paper presents the method of combining of Sentinel 2 MSI and Landsat 8 multi-resolution satellite image data for urban bare land classification based on NDBaI index. Two images of Sentinel 2 and Landsat 8 acquired closely together, were used to calculate the NDBaI index, in which sortware infrared band (band 11) of Sentinel 2 MSI image and thermal infrared band (band 10) of Landsat 8 image were used to improve the spatial resolution of NDBaI index.

11p larachdumlanat129 14-01-2021 63 3   Download

This paper presents a data classification problem and methods to improve imbalanced data classification. Especially, biomedical data has a very high imbalance rate and the sample identification of minority class is a very important. Many studies have shown that border elements are important in imbalanced data classification such as Borderline-SMOTE, Random Under Border Sampling.

10p tamynhan9 02-12-2020 15 2   Download

This paper proposes a new approach which combines different classifiers in order to make best use of each classifier. To build the new model, we evaluate the accuracy and performance (training and testing time) of three classification algorithms: ID3, Naitive Bayes and SVM.

8p tamynhan8 04-11-2020 13 3   Download

In this paper, in order to increase the accuracy of the prediction model in imbalanced data classification problem, we propose a new cluster-based sampling method to address this work. Performing tests on a number of datasets, we have achieved important results when compared to cases without using any data balancing strategies and previous method.

9p koxih_kothogmih5 04-09-2020 25 3   Download

In this paper, we present an overview of the imbalanced data classification and the difficulties encountered in current approaches, from which we propose a new method, SMOTE-PLS. To evaluate the effectiveness of this new method, we conducted experiments based on standard cancer data sets from UCI sources, including breast-p, coil2000, leukemia, colon-cancer, and yeast.

9p koxih_kothogmih5 04-09-2020 4 1   Download

The thesis uses methods of investigation, survey, data collection; professional solution; methods of comparison and classification; method of morphological analysis; evaluation methods according to norms; general analytical method.

28p kequaidan7 01-09-2020 10 2   Download

Proposing a model to classify by fuzzy decision trees and a method to select the feature training samples set for classification process. Recommending the linguistic value treatment method of inhomogeneous attributes based on hedge algebra. Proposing the algorithms by fuzzy decision tree in order to be effective in predicting and simple for users.

26p gaocaolon6 30-07-2020 32 3   Download

This thesis is organized into five chapters. In chapter 1, I give an introduction to remotely-sensed data and its application in various domains. A problem statement is also presented. Theoretical backgrounds in remote sensing, compositing methods and land cover classification methods are introdu ced.

39p tamynhan0 04-07-2020 13 5   Download