Data processing

Bài giảng Data Mining and Application: Data Pre-Processing cung cấp cái nhìn tổng quan về bước tiền xử lý dữ liệu trong quá trình khai phá dữ liệu. Nội dung bài giảng đề cập đến các kỹ thuật như mô tả thống kê dữ liệu, làm sạch dữ liệu, tích hợp dữ liệu, biến đổi và rời rạc hóa dữ liệu, cũng như các phương pháp giảm chiều dữ liệu. Đây là bước quan trọng nhằm đảm bảo chất lượng và tính hiệu quả của quá trình khai thác tri thức từ dữ liệu.

32p hoatrongguong03 15-05-2025 2 1   Download

Bài giảng Khai thác dữ liệu và ứng dụng: Tổng quan về khóa học và Giới thiệu về Khai thác dữ liệu cung cấp phần giới thiệu chung về lĩnh vực khai thác dữ liệu và các ứng dụng thực tế của nó. Bài giảng giải thích các khái niệm, thuật ngữ chính và phác thảo các giai đoạn của quá trình khám phá kiến ​​thức. Bài giảng cũng nêu bật vai trò của máy học trong khai thác dữ liệu và giới thiệu các công cụ để phân tích dữ liệu và các dự án theo nhóm.

42p hoatrongguong03 15-05-2025 0 0   Download

In the rapidly evolving landscape of commerce and industry, the integration of Big Data analytics stands as a pivotal innovation driving transformation across market prediction and supply chain optimization. This paper delves into the methodologies and technologies underpinning behind the harnessing of Big Data to enhance predictive accuracy in market trends prediction and streamline supply chain processes.

13p vijiraiya 19-05-2025 2 1   Download

Lecture Cryptography: Authentication (Part 3) continues the exploration of message authentication and hash functions. The lecture reinforces key cryptographic tools to prevent tampering and verify message legitimacy. It provides practical perspectives on implementing secure communications. Please refer to the lecture for more details!

32p hoatrongguong03 15-05-2025 1 1   Download

Lecture Cryptography: Modern Symmetric Ciphers (Part 2) delves into the Advanced Encryption Standard (AES) and modes of operation. The lecture explains how AES improves upon previous methods and introduces multiple techniques for secure encryption processing. It also examines how data can be handled in different cipher modes. Please refer to the lecture for more details!

74p hoatrongguong03 15-05-2025 1 1   Download

This article presents an overview of Stream Algebra, a research field that has emerged after the birth of Relational Algebra used in Database Management Systems (DBMS). When Stream Data appeared and needed to be processed in real-time, the role of Stream Algebra became evident. Since the rise of Big Data, this field has received attention in recent years, the role of Stream Algebra has been further demonstrated.

7p visarada 28-04-2025 1 1   Download

Identifying energy consumption trends is difficult as the food processing industry is very fragmented, products are processed to varying degrees, and production is not always continuous. This study has collated data better to understand energy consumption across different food processing sectors.

7p visarada 28-04-2025 1 1   Download

The study delved into the formation of slang terms on English and Vietnamese social media in 2023, utilizing a theoretical framework that combines the works of Yule (2010), Meyer (2009), Schmid (2015), and Le (2023). Employing a quantitative method to analyze the data, the researchers discovered several instances of various word formation processes in both languages.

8p visarada 28-04-2025 1 1   Download

This study will analyze the relationship between corporate social responsibility (CSR) and sustainable tourism in the Mekong Delta, Vietnam. In the specific context of the development process in Vietnam, the researcher will try to understand the future of sustainable tourism. The researcher employs data analysis techniques to gather the respondents' demographic information, determine the data's validity, reduce the data's dimension, confirm the data's convergent validity, and calculate the influence of factors on tourists and stakeholders.

10p visarada 28-04-2025 2 1   Download

This study focuses on developing a machine learning model through the process of analyzing. comparing, and evaluating the performance of five models: AdaBoost, Decision Tree, RandomForest, ExtraTree, and BernoulliNB. All models are implemented using the "Predict Student Dropout Dataset." Based on the results obtained after processing the data, the study will conduct an analysis based on two main criteria: evaluation by average percentage, standard deviation, and final outcomes, as well as evaluation using a time-series model of age (Balanced Accuracy Progression).

16p visarada 28-04-2025 1 1   Download

In this article, we will discuss the use of a database, called Churn Modeling, which collects statistical data from banks. We will also explore the application of the BernoulliNB algorithm, combined with the incremental machine learning method, to process streaming data and analyze and predict customer churn rates in banks.

10p visarada 28-04-2025 1 1   Download

This process aims to optimize healthcare data management, enhance the quality of care, and enable remote health monitoring. The ultimate goal is to establish a smart healthcare system that prioritizes public health and promotes sustainable development. In this context, the development of high-tech and multifunctional healthcare is an inevitable and crucial trend that aligns with the principles of security and efficiency in healthcare.

13p visarada 28-04-2025 1 1   Download

This paper presents the process of building and developing a mobile application designed to assist students and users in learning and applying Database management techniques. The goal of the application is to provide a user-friendly tool for solving exercises related to functional dependencies and keys, as well as normalizing relational schemas from basic to advanced levels.

8p visarada 28-04-2025 1 1   Download

This project presents a facial recognition-based time-tracking system that aims to improve the process of monitoring employee attendance. The system utilizes the LBPH (Local Binary Patterns Histograms) algorithm to collect and analyze facial data in real-time, allowing for accurate identification of individuals even in varying lighting conditions and from different angles.

10p visarada 28-04-2025 1 1   Download

Formative assessment is a pivotal educational practice that has drawn the attention of researchers and educators worldwide. It serves as a teaching tool for both teachers and students to increase the efficiency of the learning process. This study aims to examine the theory of formative assessment and then offer some activities related to formative assessment for language teachers to apply in their classes.

3p vimaito 11-04-2025 4 1   Download

Sentiment Analysis and Opinion Mining have emerged as highly popular fields for analyzing and extracting valuable information from textual data sourced from diverse platforms like Facebook, Twitter, and Amazon. These techniques hold a crucial role in empowering businesses to actively enhance their strategies by gaining comprehensive insights into customers' feedback regarding their products.

6p viengfa 28-10-2024 5 2   Download

This study provides readers with an overview of Flipgrid, the Flipgrid implementation process, and the effectiveness of applying Flipgrid to develop speaking skills for Thai Nguyen gifted high school students. In this action research, the pre-test, post-test, and questionnaire were employed to collect data for analysis.

9p vipanly 28-10-2024 6 4   Download

This study used the Google Earth Engine (GEE) platform to calculate the water capacity of the Saigon-Dongnai basin using remote sensing-derived products related to evapotranspiration (ET) and precipitation (P). The GEE was used to retrieve two important inputs: MODIS evapotranspiration spanning the drainage basin and CHIRPS satellite precipitation.

7p vimitsuki 30-03-2025 2 1   Download

Artificial intelligence is gradually emerging as a method for optimizing various tasks, offering cost-saving and highly efficient solutions. Nowadays, Al is used as a general term for diverse tasks performed by computers. Fields like machine learning, deep learning, and data science, among others within this scope, are considered part of Al as long as they exhibit the characteristics of artificial intelligence.

12p viuzumaki 28-03-2025 4 1   Download

The study investigates the application of tongue twister as a technique to improve first-year non-English major students through a seven-stage action research process. Quantitative data were collected through pre- and post-pronunciation tests, measuring students' improvement over the course while qualitative insights were drawn from students' reflective reports to capture their personal experiences and perspectives on the technique.

7p viyuhi 26-03-2025 6 1   Download