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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

以字詞共現網絡探勘情歌歌詞中的情感隱喻 / Exploring the Affective Metaphor and Their Relations in the Love Songs Lyrics via Word Co-Occurrence Network

李岱珊, Li, Tai Shan Unknown Date (has links)
情感運算引領人機互動開創一新的研究發展領域,通過各種能觀測人類情感表達的工具來計算不同表達方式的情感蘊含;另一方面,拜發展急速的網路媒體所賜,大量文字成為線上傳遞訊息便捷又有效率的方式,因此,各類富含情感的文字能夠被搜集成為情感分析運算的語料;而近年來跨領域研究的盛行,促成許多不同學科間的對話,也將各種技術帶入不同的領域知識範疇中,開啟創新研究的可能;有如資訊領域的社會網路分析(Social Network Analysis)技術套用到語言文字的研究上,使得大量語料的分析能夠更快速的達成。 本研究針對英文的情歌歌詞進行字詞共現網絡(Word Co-Occurrence Network)的分析,將字彙之間的概念關聯,和歌詞文本隱喻分析的結果作一比較,以評估字詞共現網絡作為隱喻表達分析工具的潛能,提供不同角度的情感語意探勘方法,作為情感溝通上的一項貢獻。 / Affective computing explore a new research field, human different emotional expression could be calculated through types of affection detection tool. On the other hand, “word” as a convenience communication medium through the online media, lead lots of entailment affection word to be the affective computing analysis corpus. Interdisciplinary cooperation researches prevail among different academic field to initiate innovation study. Applying Social Network Analysis (SNA) information technique to semantic research as an example, make the large corpus analysis to be more efficiency. In this research, Word Co-Occurrence Network was used to explore the specific meaning of the lyrics to observe what the content represent affective concepts in western classical love songs, and evaluated the potential of Word Co-Occurrence Network to be a new concept relation analysis tool by compared with the content analysis data.
2

有關對調適與演化機制的再審思-在財務時間序列資料中應用的統計分析 / Rethinking the Appeal of Adaptation and Evolution: Statistical Analysis of Empirical Study in the Financial Time Series

林維垣 Unknown Date (has links)
本研究的主要目的是希望喚起國內、外學者對演化科學在經濟學上的重視,結合電腦、生物科技、心理學與數學於經濟學中,希望對傳統經濟學上因簡化假設而無法克服的實際經濟問題,可以利用電腦模擬技術獲得解決,並獲取新知與技能。 本研究共有六章,第一章為緒論,敘述緣由與研究動機。第二章介紹傳統經濟學的缺失,再以資料掘取知識及智慧系統建構金融市場。第三章則介紹各種不同人工智慧的方法以模擬金融市場的投資策略。第四章建立無結構性變遷時間序列模型--交易策略電腦模擬分析,僅以遺傳演算法模擬金融市場的投資策略,分別由投資組合、交易成本、調適性、演化、與統計的觀點對策略作績效評分析。第五章則建立簡單的結構性變遷模型,分別由調適性與統計的觀點,採取遺傳演算法再對投資策略進行有效性評估分析。第六章則利用資料掘取知識與智慧系統結合計量經濟學的方法,建構遺傳演算法發展投資策略的步驟,以台灣股票市場的資料進行實証研究,分別就投資策略、交易成本、調適性與演化的觀點作分析。最後一章則為結論。 未來研究的方向有: 1. 其他各種不同人工智慧的方法的比較分析,如人工神經網路、遺傳規劃法等進行績效的交叉比較分析。 2. 利用分類系統(Classifier System)與模糊邏輯的方法,改善標準遺傳演算法對策略編碼的效率,並建構各種不同的複雜策略以符合真實世界的決策過程。 3. 建構其他人工時間資料的模擬比較分析,例如ARCH (Autoregressive Conditional Heteroskedasticity)模型、Threshold 模型、 確定性(Deterministic) 模型等其他時間序列模型與更複雜的結構性變遷模型。 4. 進一步研究遺傳演算法所使用的完整資訊(例如,各種不同指標的選取)。 5. 本研究係採用非即時分析系統(Offline System),進一步研究即時分析系統 (Online Sysetem)在實務上是有必要的。 / Historically, the study of economics has been advanced by a combination of empirical observation and theoretic development. The analysis of mathematical equilibrium in theoretical economic models has been the predominant mode of progress in recent decades. Such models provide powerful insights into economic processes, but usually make restrictive assumptions and appear to be over simplifications of complex economic system. However, the advent of cheap computing power and new intelligent technologies makes it possible to delve further into some of the complexities inherent in the real economy. It is now feasible to create a rudimentary form of “artificial economic life”. First, we build the framework of artificial stock markets by using data mining and intelligent system. Second, in order to analyze competition among buyers and sellers in the artificial market, we introduce various methods of artificial intelligence to design trading rules, and investigate how machine-learning techniques might be applied to search the optimal investment strategy. Third, we create a miniature economic laboratory to build the artificial stock market by genetic algorithms to analyze investment strategies, by using real and artificial data, which consider both structural change and nonstructural change cases. Finally, we use statistical analysis to examine the performance of the portfolio strategies generated by genetic algorithms.

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