Word segmentation is an important task in natural language processing, especially for languages without word boundaries, such as Thai language. Many Thai word segmentation programs have been developed. Researchers and developers in Thai documents usually spend a tremendous amount of time in studying and trying different Thai word segmentation programs. This paper presents the performance of six...

This document describes the approach and techniques used in software that has been developed to generate phonemes from written Thai. This software has been used to generate the phonetic transcription of Thai words in a Thai-Dutch dictionary. The most important part of this software is a lexical analyzer based on regular expressions for matching patterns in the Thai writing system. Because most ...

Since Thai language lacks word/phrase/sentence boundaries, document summarization in Thai needs investigations in unit segmentation, unit selection, redundancy removal and evaluation dataset construction. In this work, we have proposed Thai Elementary Discourse Unit (TEDU) and a three-stage method of Thai multidocument summarization, i.e., unit segmentation, unit-graph formulation, and unit sel...

This article presents new research on income-based child indicators for immigrant children from 17 different national backgrounds and children of parents born in Sweden observed during the 3-year periods 1983-85, 1995-97 and 2008-10. This research examines mean household income, representation at the top of the income distribution and relative poverty differ for immigrant children from the corr...

This dissertation consists of three chapters with a central theme on Hispanic inflows and public goods provision. The first paper investigates how Hispanic immigrant inflows affect K-12 public education finance in the US. I first document the long-run trend of mean household income and average number of children per household for Hispanic immigrant households relative to native households. An a...

This paper investigates the link between natives’ residential context, perception of immigration levels and attitudes towards immigrants. We use British Election Study to extract individual level measures for 17,000 respondents in England and Wales and match them with contextual characteristics at the level of Westminster constituency. The paper focuses on three questions: (1) is perception of ...

Forecasts of the financial status of Social Security's Old-Age, Survivors, and Disability Insurance (OASDI) programs and forecasts of the effects of various OASDI policy options on Americans would be improved if information about the earnings and labor force behavior of various population subgroups were included in projection models. Focusing on the projection of immigrant earnings, this articl...

The objective of this study was to clarify the status of occupational health and safety services for immigrant workers, the barriers to employing immigrant workers and the needs of the managers in workplaces to keep immigrant workers healthy and safe. This study was a cross-sectional survey. We sent self-administered questionnaires to 126 workplaces in the western part of Shizuoka Prefecture, J...

A Thai written text is a string of symbols without explicit word boundary markup. A method for a development of a segmentation tool from a corpus of already segmented text is described. The methodology is based on the technology of competing patterns, evolved from algorithm for English hyphenation. A new UNICODE pattern generation program, OPATGEN, is used for the learning phase. We have shown ...

The oldest Thai script found in the history dated over 700 years ago, in Sukhothai age. Over years, Thai script has been gradually changed. The contemporary Thai alphabet comprises 44 consonants, 32 vowels, 4 tone marks, 2 diacritics, and 10 decimal digits. These cover only the minimal set of symbols to write Thai words. There are additional 3 symbols particularly used for writing Pali and Sans...