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3D building internal structural component segmentation from point cloud data using DBscan and modified ransac with normal deviation conditions

Thanapon Doougphummet (Chulalongkorn University, 2022)

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 ...

A two-stage model for balancing instructor workload and teaching preference in university course timetabling

Nipitta Burana (Chulalongkorn University, 2020)

This thesis focuses on balancing instructor workload and maximizing preferences by using the data in the first semester of 2019 from Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University ...

Adaptive inertia weight particle swarm algorithm

Thakorn Chatchaisathaporn (Chulalongkorn University, 2012)

An Optimum Communication Spanning Tree (OCST) problem is a problem of finding a spanning tree of minimum total communication cost satisfying a given set of requirements of communication. The popular technique for solving ...

Adjustment of maximum likelihood method for multivariate fay-herriot model

Annop Angkunsit (Chulalongkorn University, 2019)

The most widely used area-level model in small area estimation is the Fay-Herriot model, proposed by Fay and Herriot. It was used first to estimate average per capita income for small places (population less than 1,000) ...

Alternative jensen functional equation on groups

Choodech Srisawat (Chulalongkorn University, 2015)

Given integers α, β, γ such that (α, β, γ) ̸= k(1,−2, 1) for all k ∈ Z, we will establish a criterion for the existence of the general solution of the alternative Jensen functional equation of the form f(xy^{−1}) − 2f(x) ...

Alternative quadratic functional equation on 2-divisible abelian groups

Jenjira Tipyan (Chulalongkorn University, 2015)

Let (G+) be a 2-divisible abelian group and let (Y+) be a real (or complex or rational) linear space. We will show that the alternative quadratic function equation ʄ(x+y) + ʄ(x-y) = 2ʄ(x)±2ʄ(y) is equivalent to the classical ...

Analytical formula for conditional moments of extended heston-CEV hybrid model with time-dependent parameters

Promsiri Anunak (Chulalongkorn University, 2023)

This thesis proposes an analytical formula for the conditional moments of the extended Heston-CEV hybrid model, which is the combination of the Heston model and the March-Rosenfeld process, also known as the constant ...

Anomaly detection on time series from furthest neighbor window subseries

Senee Kitimoon (Chulalongkorn University, 2016)

Anomaly detection in time series is classified into three types which are point anomaly, contextual anomaly, and collective anomaly. This work proposes a novel method called the Furthest Neighbor Window Subseries (FNWS) ...

Applying support vector machine with connectivity of primitive biochemical compound structure to identify target characteristics of molecules

Peemapat Wongsriphisant (Chulalongkorn University, 2019)

Graph-structured data are widely used in many fields of study. For example, in cheminformatics, the data of biochemical compounds can be encoded as a compound graph where atoms are represented by vertices and chemical bonds ...

Automatic model identification for time series analysis using deep learning

Paisit Khanarsa (Chulalongkorn University, 2019)

Most time series data can be characterized by a linear process via the autoregressive integrated moving average model requiring a three-component vector which are the autoregressive, differencing, and moving average orders ...

Bayesian models for poverty mapping in Thailand

Sarasinee Somjettana (Chulalongkorn University, 2019)

Poverty maps are important sources of information for solving social, economic, and environmental problems. Initially, the World Bank used the ELL method to produce poverty maps for used in designing, targeting, prioritizing ...

Beyond quenching profile for singular semilinear parabolic partial differential equations with mixed boundary conditions

Benjamin Thaitavorn (Chulalongkorn University, 2022)

Bi-orbital extreme pole clustering algorithm

Chalee Boonprasop (Chulalongkorn University, 2015)

Knowledge discovery has been adopted widely in many fields. Clustering algorithm is a step that filters or partitions data into manageable sizes. B. Kaveelerdpotjana, et al. proposed a simple and efficient the half-orbital ...

Boolean model for biochemical processes related To effect of cha in cancer cells

Pajaree Sonsungsan (Chulalongkorn University, 2016)

Cancer is a group of diseases involving abnormal cell growth. In the present, cancer is one of the major diseases causing death annually. To inhibit cancer cells, several substances have been proposed and studied; for ...

Building detection from remote sensing images using yolo

Noppadon Pumpong (Chulalongkorn University, 2020)

Building detection system through the remote sensing of images has been widely studied. In this thesis, we propose a model for detecting buildings at airports in Asia through different levels of remote sensing image. The ...

Classification of main components in airports from remote sensing images by efficient network

Pimpisa Charoenchittang (Chulalongkorn University, 2020)

In this thesis, we classify the type of main components in airports from the remote sensing images. This datasets is considered as an interesting information since the same type of component may have different shape, size, ...

Closed-form formulas for conditional moments of generalized cox-ingersoll-ross processes

Phiraphat Sutthimat (Chulalongkorn University, 2021)

Cox-Ingersoll-Ross (CIR) process, introduced in 1985, is a one factor model used to describe the evolution of interest rate and pricing the financial derivatives. It was later extended to have time-dependent parameters ...

Correlations between gold spot prices and futures prices

Opat Chanpongpisud (Chulalongkorn University, 2012)

In this thesis, we study behavior of gold prices by using the stochastic model proposed by Issaranusorn (2010). We use gold spot price data obtained from the LGMF (London Gold Market Fixing Limited) to estimate the model ...

Cuckoo search and enhanced artificial bee colony heuristic methods for vehicle routing problem with backhaul and time window constraints

Tanawat Worawattawechai (Chulalongkorn University, 2017)

The vehicle routing problem with backhauls and time windows (VRPBTW) aims to find a feasible vehicle route that minimizes the total traveling distance while imposing capacity, backhaul, and time-window constraints. In this ...

Discrete-time risk model based on zero inflated poisson time series

Siwarak Sawongnam (Chulalongkorn University, 2020)

An important goal of actuary is to develop models for company portfolio and insurance products. Risk measurement is one of the essential measures that inform actuaries and risk managers about the degree to which the risk ...

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