Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2022

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 163741 - 163770 of 167964

Full-Text Articles in Entire DC Network

Mass Ratio Variance Majority Cleansing And Minority Oversampling Technique For Class Imbalanced, Piboon Polvimoltham Jan 2022

Mass Ratio Variance Majority Cleansing And Minority Oversampling Technique For Class Imbalanced, Piboon Polvimoltham

Chulalongkorn University Theses and Dissertations (Chula ETD)

A sampling method is one of the basic methods to deal with an imbalance problem appearing in machine learning. A dataset having an imbalance problem has a noticeably skewed distribution among different classes. There are three types of sampling techniques to solve this problem by balancing class distributions, undersampling technique, over-sampling technique, and combined sampling technique. In this research, the mass ratio variance scores of each data point of the same class are computed and used to remove noise from a majority class and synthesise instances from a minority class. The results of this proposed sampling technique improve recall over …

Go to article

Identifying The Most Distinctive Characteristics Of A Good Solution For Non-Euclidean Cvrp Using Statistical Learning Model, Piyabut Inbunsong Jan 2022

Identifying The Most Distinctive Characteristics Of A Good Solution For Non-Euclidean Cvrp Using Statistical Learning Model, Piyabut Inbunsong

Chulalongkorn University Theses and Dissertations (Chula ETD)

A capacitated vehicle routing problem (CVRP) is a well-known NP-hard combinatorial optimization. Therefore, heuristics are the common methods used to search for a good solution. The algorithms will perform better if characteristics of good solutions of the problem are known. There was a research study in the characteristics of Euclidean CVRP solutions and the knowledge was later applied in a metaheuristic. That study becomes our motivation to study the characteristics of non-Euclidean CVRP solutions. To that end, we considered the solutions of non-Euclidean CVRP in the new Euclidean space with the same or higher dimensions using multi-dimensional scaling in which …

Go to article

Stochastic Control Model With Carrying Capacity Of Population Management Policy For Squirrels In Durian Orchards, Sasiwimol Auepong Jan 2022

Stochastic Control Model With Carrying Capacity Of Population Management Policy For Squirrels In Durian Orchards, Sasiwimol Auepong

Chulalongkorn University Theses and Dissertations (Chula ETD)

In this thesis, the problem that squirrels ruin durian, which is an economic important fruit in Thailand, is considered. We seek for a strategy on squirrel elimination under the consideration that squirrels are not alien species in Thailand and also orchard ecosystem. The problem is solved through a stochastic control model. The population dynamics of squirrels is constructed as a controlled stochastic differential equation with carrying capacity, since we consider the squirrel population in a confined orchard. A performance index indicating the total benefit of a given squirrel elimination strategy is provided. The index comprises the countermeasure cost, resources loss, …

Go to article

Random Forest Of Mixed Decision Trees And Minority Condensation Decision Trees For Class Imbalanced Problem, Suvaporn Homjandee Jan 2022

Random Forest Of Mixed Decision Trees And Minority Condensation Decision Trees For Class Imbalanced Problem, Suvaporn Homjandee

Chulalongkorn University Theses and Dissertations (Chula ETD)

No abstract provided.

Go to article

Finite Integration Method Using Chebyshev Expansion For Solving Heat Equation With Non-Local Boundary Conditions, Thanakorn Prasansri Jan 2022

Finite Integration Method Using Chebyshev Expansion For Solving Heat Equation With Non-Local Boundary Conditions, Thanakorn Prasansri

Chulalongkorn University Theses and Dissertations (Chula ETD)

No abstract provided.

Go to article

3d Building Internal Structural Component Segmentation From Point Cloud Data Using Dbscan And Modified Ransac With Normal Deviation Conditions, Thanapon Doougphummet Jan 2022

3d Building Internal Structural Component Segmentation From Point Cloud Data Using Dbscan And Modified Ransac With Normal Deviation Conditions, Thanapon Doougphummet

Chulalongkorn University Theses and Dissertations (Chula ETD)

Nowadays, the laser scanner plays an important role as a tool to capture building structure in a form of point cloud which can be used to draw a blueprint or a floor plan for reconstruction or renovation of an existing building. The point cloud data represent a shape or an object in three dimensions. This point cloud together with the utilization of Building Information Modeling (BIM) which is a workflow that provides information about the foundation and structure measurement of a building, make a planning and design to construction more convenient and efficient in several aspects than the traditional way. …

Go to article

Numerical Algorithm For Heat Equation With Moving Boundary Using Finite Integration Method With Chebyshev Polynomial Expansion, Warunya Wong-U-Ra Jan 2022

Numerical Algorithm For Heat Equation With Moving Boundary Using Finite Integration Method With Chebyshev Polynomial Expansion, Warunya Wong-U-Ra

Chulalongkorn University Theses and Dissertations (Chula ETD)

No abstract provided.

Go to article

Enhanced Triacylglycerol Production In Chlorella Vulgaris By Flux Balance Analysis On Metabolic Network, Issalapap Kaothong Jan 2022

Enhanced Triacylglycerol Production In Chlorella Vulgaris By Flux Balance Analysis On Metabolic Network, Issalapap Kaothong

Chulalongkorn University Theses and Dissertations (Chula ETD)

Triacylglycerol (TAG) is a type of lipid that can be produced by a microalga called Chlorella vulgaris, which is a promising source of biodiesel. However, there is a lack of research and models explaining how to directly produce this lipid. To address this, we propose using linear minimization of metabolic adjustment (LMOMA), which predicts gene manipulation effects based on Flux Balance Analysis (FBA), to enhance TAG production. We conducted single-gene deletion experiments on the genome-scale metabolic model of C. vulgaris UTEX 395 (iCZ843) under different growth conditions: heterotrophy, photoautotrophy, and mixotrophy conditions. We found that the TAG production increased by …

Go to article

Comparative Analysis Of Mutational Landscapes Identified From Exome Sequencing Of Tumor Tissues And Circulating Tumor Dna, Julanee Leenanitikul Jan 2022

Comparative Analysis Of Mutational Landscapes Identified From Exome Sequencing Of Tumor Tissues And Circulating Tumor Dna, Julanee Leenanitikul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Next-generation sequencing of circulating tumor DNA (ctDNA) has been used as a noninvasive alternative for cancer diagnosis and characterization of tumor mutational landscape. However, low ctDNA fraction and other factors can limit the ability of ctDNA analysis to capture tumor-specific and actionable variants. In this study, whole-exome sequencings (WES) were performed on paired ctDNA and tumor biopsy in 15 cancer patients to assess the extent of concordance between mutational profiles derived from the two source materials. We found that up to 16.4% ctDNA fraction can still be insufficient for detecting tumor-specific variants and that high concordance with tumor biopsy is …

Go to article

Catalytic Mechanism And Inhibition Of Plasmodium Sp. Serine Hydroxymethyltransferase By Computational Simulations, Pitchayathida Mee-Udorn Jan 2022

Catalytic Mechanism And Inhibition Of Plasmodium Sp. Serine Hydroxymethyltransferase By Computational Simulations, Pitchayathida Mee-Udorn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Malaria has spread in many countries with a 12% increase in death cases after the COVID-19 pandemic. Over the Greater Mekong subregion, the clinical efficacy of antimalarial drugs has been reduced due to resistance. Target-based approaches on attractive drug targets, such as Plasmodium serine hydroxymethyltransferases (SHMTs) exhibiting distinct structure and function as well as kinetic mechanisms from the human enzyme homologue, are highly useful methods to be used for bypassing the present resistance in the field. In this study, the catalytic mechanism of Plasmodium SHMT was investigated following the retro-aldol proposed scheme by the combined quantum mechanics/molecular mechanics molecular dynamics …

Go to article

Computational Approaches For Identifying Bioactive Compounds Inhibiting Sars-Cov-2 Main Protease, Piyatida Pojtanadithee Jan 2022

Computational Approaches For Identifying Bioactive Compounds Inhibiting Sars-Cov-2 Main Protease, Piyatida Pojtanadithee

Chulalongkorn University Theses and Dissertations (Chula ETD)

The infectious disease caused by the novel coronavirus 2019 has devastatingly affected the global economy and society. However, the drug discovery process from concept to approval requires a significant investment of time and resources. To address these challenges, we employed structure-based virtual screening techniques, including drug-likeness screening, pharmacophore-based virtual screening, molecular docking, molecular dynamics simulation, and fragment molecular orbital calculation. The protein target of this investigation was the main protease or 3-chymotrypsin-like-protease (3CLpro) of the coronavirus, given its pivotal role in the viral replication process. Using our in-house database of natural products and their derivatives, we aimed to identify potent …

Go to article

Analysis Of Expression Patterns Of Brassinosteroid-Responsive Genes In Arabidopsis Root Using Single-Cell Rna Sequencing Datasets, Thanaporn Wongkham Jan 2022

Analysis Of Expression Patterns Of Brassinosteroid-Responsive Genes In Arabidopsis Root Using Single-Cell Rna Sequencing Datasets, Thanaporn Wongkham

Chulalongkorn University Theses and Dissertations (Chula ETD)

Brassinosteroid (BR) plays a complex role in root growth and development by regulating the expression of downstream target genes through the BR signaling pathway. In this scRNA-seq study of Arabidopsis roots, tissue- and developmental-specific roles of BR were identified. Atrichoblast, an epidermal cell that develops into a non-hair cell, displayed the highest enrichment of BR-induced genes in the elongation and maturation zones among all cell types. Trajectory analysis revealed distinct expression patterns of BR biosynthesis and signaling genes between atrichoblasts and trichoblasts. Atrichoblasts exhibited higher expression levels of BR biosynthesis genes (DET2 and ROT3) and BR signaling genes (BRI1 and …

Go to article

Whole Genome Sequencing, De Novo Assembly, And Comparative Analysis Of Varanus Salvator And Megaustenia Siamensis, Wanna Chetruengchai Jan 2022

Whole Genome Sequencing, De Novo Assembly, And Comparative Analysis Of Varanus Salvator And Megaustenia Siamensis, Wanna Chetruengchai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: Understanding the animal genome structure and function is pivotal for expanding our current knowledge of evolution, biodiversity, cosmeceutical and medical applications. Each species has a unique characteristic feature. Varanus salvator is a reptile (vertebrate) prevalent in Thailand. It has evolved over millions of years to adapt and survive in urban environments, polluted canals, and garbage dumps. It still survives without noticeable effects. Megaustenia siamensis, an invertebrate, is famous for its ability to produce biological adhesive substances enabling it to stick to trees’ leaves even in heavy rain. However, there is very little genomics or transcriptomics data for V. salvator …

Go to article

The Role Of B1 Methylation, Physiologic Replication Independent Endogenous Dna Double Strand Breaks (Phy-Rind-Edsb) And Laminin 511 E8 Proteins In Rat Second Degree Burn Wound Healing, Jiraroch Meevassana Jan 2022

The Role Of B1 Methylation, Physiologic Replication Independent Endogenous Dna Double Strand Breaks (Phy-Rind-Edsb) And Laminin 511 E8 Proteins In Rat Second Degree Burn Wound Healing, Jiraroch Meevassana

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: DNA methylation via short interspersed nuclear element (SINE) small interfering (si)RNA prevents DNA damage and promotes cell proliferation. Furthermore, laminin α5 β1 γ1(LM511) is an extracellular structural protein that can support epithelial cell adhesion and migration. Box A of high-mobility group box 1 protein (Box A of HMGB1) is a common nuclear protein in eukaryotic cells that can reduce DNA damage response toward burn injury. Objective: To investigate whether treatment of burn wounds using B1 siRNA, Box A of HMGB1 and LM511-E8 fragment improved wound closure in a rat second-degree burn wound model. Methods: I performed a cross-sectional analytical …

Go to article

Senescent White Blood Cells In Colorectal Carcinoma Patients, Khin Aye Thin Jan 2022

Senescent White Blood Cells In Colorectal Carcinoma Patients, Khin Aye Thin

Chulalongkorn University Theses and Dissertations (Chula ETD)

Colorectal cancer (CRC) and ageing can contribute to changes in immune cells including immuno-senescence. The objectives of the study were to determine if the senescence marker (p16INK4A) was expressed more at higher levels in peripheral white blood cells in CRC compared to age-matched healthy controls. Another aim was to determine the phenotypic changes of T cells, NK cells and monocytes during ageing and CRC in case-control studies. Cases were patients with CRC and controls were matched with cases based on age. Peripheral immune cells were analysed for p16INK4A using immunofluorescence and immunophenotypes were determined with flow cytometry. Correlation studies with …

Go to article

The T Cell Senescence In Breast Cancer, Sikrit Denariyakoon Jan 2022

The T Cell Senescence In Breast Cancer, Sikrit Denariyakoon

Chulalongkorn University Theses and Dissertations (Chula ETD)

Background: The cancer-immune cell crosstalk is a common immune-evasion mechanism of cancer. This crosstalk can result in epigenetic changes in immune phenotypes to accelerate tumor growth and metastasis. Senescent T lymphocytes are formed during T cell differentiation, and are recently described as one of the dysfunctional T cells in cancer. In breast cancer, estrogen does not only regulate normal physiology in females, but is also involved in cancer development and cancer treatment. It may also attenuate senescent phenotypes, and increase DNA damage in several cell-lines. This thesis therefore examined for the presence of senescent T lymphocytes in breast cancer patients, …

Go to article

Screening Of Clostridium Sp. For Biohydrogen Production From Synthetic Wastewater, Chonticha Srimawong Jan 2022

Screening Of Clostridium Sp. For Biohydrogen Production From Synthetic Wastewater, Chonticha Srimawong

Chulalongkorn University Theses and Dissertations (Chula ETD)

In this work, bacteria that can produce endospores were isolated from natural sources and industrial wastes, including mangrove forests, hot springs, and coconut factories. The bacterial isolates were identified as Clostridium spp. and Panibacillus spp. based on 16S RNA gene. When comparing the H2 produced by batch fermentation, two of the isolates with the best H2 production were selected for further study, namely CUEA01 and CUEA03. After genomics analysis, it was discovered that CUEA01 is a novel species named C. hydrogenum, and CUEA03 is C. felsineum. Both are capable of growing and producing H2 in alkaline conditions. The genomics data …

Go to article

Screening Of Clostridium Sp. For Butanol Production From Sato (Thai Rice Wine) Factory Wastewater, Julalak Buranaprasopchai Jan 2022

Screening Of Clostridium Sp. For Butanol Production From Sato (Thai Rice Wine) Factory Wastewater, Julalak Buranaprasopchai

Chulalongkorn University Theses and Dissertations (Chula ETD)

The production of Sato, a Thai traditional beverage, yields Sato wastewater (STW), which contains residual rice constituents with high chemical and biological oxygen demands and so forms an environmental problem. In addition, STW often smells rotten from the formation of hydrogen sulfide. To solve this problem, the composition of STW was analyzed for its physiological and chemical characteristics to evaluate its potential as a substrate for ABE fermentation using Clostridium spp., which has never been reported for use in acetone-butanol-ethanol (ABE) fermentation before. Solvent-producing Clostridium isolates were obtained from environmental sources in Thailand, and that producing the highest butanol level …

Go to article

Identification And Application In Plant Of Plant Growth-Promoting Endophytic Bacteria, Kanchana Sitlaothaworn Jan 2022

Identification And Application In Plant Of Plant Growth-Promoting Endophytic Bacteria, Kanchana Sitlaothaworn

Chulalongkorn University Theses and Dissertations (Chula ETD)

Seventy-eight endophytic bacteria isolated from 15 plant samples in Thailand including 50 isolates from sugarcane root samples obtained from 6 Provinces and 28 isolates from stems and leaves of healthy plants in Kanchanaburi Province, were identified and evaluated for plant growth promoting capability using rice as a plant model. They were identified as Gluconacetobacter (37 isolates), Pantoea (14 isolates), Burkholderia (2 isolates), Pseudomonas (4 isolates), Priestia (4 isolates), Enterobacter (2 isolates), Acinetobacter (2 isolates), Novosphingobium (2 isolates), Curtobacterium (2 isolates), and each of Nguyenibacter, Aureimonas, Bacillus, Peribacillus, Sphingobium, Staphylococcus, Brevibacillus, Aneurinibacillus, and Pseudarthrobacter based on their phenotypic characteristics and 16S …

Go to article

Anti-Pathogenic Yeast Malassezia Globosa Activity By Propolis Of Stingless Bee Geniotrigona Thoracica, Kawisara Konsila Jan 2022

Anti-Pathogenic Yeast Malassezia Globosa Activity By Propolis Of Stingless Bee Geniotrigona Thoracica, Kawisara Konsila

Chulalongkorn University Theses and Dissertations (Chula ETD)

Malassezia globosa is a lipophilic pathogen which relates to various chronic skin diseases. Azole drugs are main available treatments, but they have been reported with many side effects and microbial drug resistance. Therefore, the alternative medications should be developed. As the antimicrobial activity of propolis is outstanding, this study aims to investigate the potential of propolis from stingless bee, Geniotrigona thoracica against the pathogenic yeast. The extraction and characterization of the propolis components were done after the obtained extracts were evaluated for anti-M. globosa growth by using agar well diffusion assay and broth microdilution assay. Moreover, Inhibitory Concentration values at …

Go to article

Antiproliferative Agents From Mushroom Phellinus Sp., Kulrut Pichayaphinyo Jan 2022

Antiproliferative Agents From Mushroom Phellinus Sp., Kulrut Pichayaphinyo

Chulalongkorn University Theses and Dissertations (Chula ETD)

In this study, Phellinus powdered (600 g) was extracted with methanol and DI water. The methanolic crude extract of the mushroom was partitioned with hexane, dichloromethane, ethyl acetate and methanol respectively. All crude extracts were evaluated antiproliferative activity against lung cancer (A549) and neuroblastoma (SH-SY5Y) cell lines by MTT assay. It was found that the dichloromethane extract (CDE) exhibited the strongest antiproliferative activity with half maximal inhibitory concentration (IC50) values of 132.4 and 106.87 µg/mL against human lung cancer and neuroblastoma cell lines, respectively. The ethyl acetate extract (CEE) exhibited moderate antiproliferative activity with IC50 values of 138.64 and >250 …

Go to article

Effect Of Genipin Cross-Linking On Properties Of Chitosan Based Bio-Composite Film, Patthrare Inthamat Jan 2022

Effect Of Genipin Cross-Linking On Properties Of Chitosan Based Bio-Composite Film, Patthrare Inthamat

Chulalongkorn University Theses and Dissertations (Chula ETD)

Active packaging from chitosan film incorporated with astaxanthin is limited commercial application in the food industry due to its high moisture permeability and poor tensile strength. To overcome these problems, crosslinking of the film with genipin and heat curing to improve film properties were proposed. Firstly, the effects of genipin concentration on the physical, moisture barrier and mechanical properties of chitosan films incorporated with astaxanthin were investigated. Chitosan film was prepared by mixing chitosan in 2% (w/w) lactic acid. The chitosan was incorporated with astaxanthin at 0 and 1% (w/w of chitosan) (marked as CS and CA or CSA) and …

Go to article

Nft-Based Authentic Product Verification And Trading Platform, Natchapol Thongruang Jan 2022

Nft-Based Authentic Product Verification And Trading Platform, Natchapol Thongruang

Chulalongkorn University Theses and Dissertations (Chula ETD)

Counterfeit product has been a major problem to the economy for a while. The effect seems to be larger when it comes to the luxury product segment. When the consumers were unsure if the product that they are buying is genuine or not and its cost is very high, then the severity will become even greater. Among the countless number of attempts to fix this solution, utilizing blockchain technology is one of the most popular approaches for present days. In anti-counterfeit domain, associating an NFT token to a physical product is the most common approach. It allows us to unlock …

Go to article

Investigate The Possibility Of Using Smart Contracts And Digital Signatures To Create A Legally Binding Contract, And To Create A Prototype Opensource Web Application As A Proof Of Concept, Yosnai Chanatrutipan Jan 2022

Investigate The Possibility Of Using Smart Contracts And Digital Signatures To Create A Legally Binding Contract, And To Create A Prototype Opensource Web Application As A Proof Of Concept, Yosnai Chanatrutipan

Chulalongkorn University Theses and Dissertations (Chula ETD)

We investigated the possibility of using blockchain to create a legally binding contract. According to our study, blockchain can be used to authenticate the identities of the involved parties, to provide a cryptographically generated electronic signature used to sign a contract, and to automate and enforce the term of an agreement. The authentication and the signing are done using a blockchain-based self-sovereign identity framework called a decentralized identity and verifiable credentials. The term can be enforced by using a smart contract, a program that runs on the blockchain. Some contracts terms are too complex to be translated into a smart …

Go to article

Estimating Stock Price Based On Information From Financial Statement Using Machine Learning Approach, Thitikun Kunathananon Jan 2022

Estimating Stock Price Based On Information From Financial Statement Using Machine Learning Approach, Thitikun Kunathananon

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study introduces a new tool for stock market investors and institutions constructed from Long Short-Term Memory (LSTM) for predicting stock prices. By effectively analyzing financial statements and stock market data, LSTM provides a fast, unbiased, low-cost solution for stock price prediction, intending to increase profits for investors and reduce losses. The study results indicate that LSTM can maintain effectively captures complex relationships in the data and predicts stock prices. This research highlights the potential of LSTM as a valuable and innovative tool for investors and institutions in the stock market.

Go to article

Combining Technical Analysis And Deep Learning Models For Stock Market Trading, Phurinut Pholsri Jan 2022

Combining Technical Analysis And Deep Learning Models For Stock Market Trading, Phurinut Pholsri

Chulalongkorn University Theses and Dissertations (Chula ETD)

The issuance of stocks constitutes a means by which ownership in a company is represented, and its distribution may vary depending on whether the company is limited or public. The stock market offers the potential for high returns, thereby serving as an attractive avenue for investment. Against this backdrop, the objective of this study is to develop a predictive model for stock prices that can facilitate profitable trading outcomes. To achieve this aim, the study focuses on intraday and hourly trading and utilizes a hybrid model that integrates Bidirectional Long Short-Term Memory (BiLSTM) and Convolutional Neural Network (CNN) architectures, along …

Go to article

Real-Time Object Detection For Screening Cannabis Seed Gender, Prachya Boonsri Jan 2022

Real-Time Object Detection For Screening Cannabis Seed Gender, Prachya Boonsri

Chulalongkorn University Theses and Dissertations (Chula ETD)

Perception and understanding of cannabis are more expansive than they formerly were. Almost all growers are primarily interested in getting harvests of big flower buds from cannabis female plants since THC, CBD and other cannabinoids are found in female flowers and valuable for medical and industrial market segments. Selecting only female seeds to cultivate is thus an important step to produce THC, CBD profitably. Unfortunately, outdoor cultivation in Thailand traditionally grows regular cannabis seeds that grow up of mixed male and female plants. The male plants will be later spot and eliminated during the pre-flowering stage. This incurs the higher …

Go to article

A Comparative Study On Out Of Scope Detection For Chest X-Ray Images, Nuttapol Kamolkunasiri Jan 2022

A Comparative Study On Out Of Scope Detection For Chest X-Ray Images, Nuttapol Kamolkunasiri

Chulalongkorn University Theses and Dissertations (Chula ETD)

Image classification models in actual applications may receive input outside the intended data distribution. For crucial applications such as clinical decision-making, it is critical that a model can recognize and describe such out-of-distribution (OOD) inputs. The objective of this study is to investigate the efficacy of several approaches for OOD identification in medical images. We examine three classes of OOD detection methods (Classification models, Confidence-based models, and Generative models) on the data of X-ray images. We found that simple classification methods and HealthyGAN perform the best overall. However, HealthyGAN cannot generalize to unseen scenarios, while classification models still retain some …

Go to article

Xgboost For Prediction Of Ethereum Short-Term Returns Based On Technical Factor, Wipawee Nayam Jan 2022

Xgboost For Prediction Of Ethereum Short-Term Returns Based On Technical Factor, Wipawee Nayam

Chulalongkorn University Theses and Dissertations (Chula ETD)

Unlike traditional currencies that rely on centralized such as banks or governments, cryptocurrencies today have become popular due to its decentralized transactions. Decentralization takes advantage of no requirement for intermediaries, thus reducing transaction fees and processing time. However, investing in cryptocurrencies incurs risks and uncertainties due to price volatility and rapid changes. The fact that prediction of asset prices is complex due to the influence of multiple factors on price movements. This paper studied the technical factor to analyze the short-term returns of Ethereum in the periods of 1-10 days. The historical data containing Ethereum closing price are collected from …

Go to article

Class-Level And Token-Level Approaches For Test Impact Analysis, Alon Basin Jan 2022

Class-Level And Token-Level Approaches For Test Impact Analysis, Alon Basin

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objective of the thesis is to examine the efficacy of test impact analysis in a setting of continuous testing, where automated test cases are routinely run to guarantee the integration of high-quality codes. While continuous testing can enhance code quality and minimize maintenance workload, it also leads to a notable rise in overhead for test execution. In our study on test impact analysis, we developed a novel static class level technique that utilizes JavaParser to create a dependency graph between test cases and source code classes based on abstract syntax trees. We applied this technique to seven Java systems …

Go to article

First Prev Next Last