Evolution of Agents in a Simple Artificial Market

2010 ◽  
pp. 118-133
Author(s):  
Hiroshi Sato ◽  
Masao Kubo ◽  
Akira Namatame
Keyword(s):  
Stock Market ◽  
Comparative Study ◽  
Wealth Distribution ◽  
Trading Strategies ◽  
The Other ◽  
Complex Behavior ◽  
Artificial Market ◽  
Agent Based ◽  
Other Hand ◽  
Artificial Stock Market

In this chapter, we conduct a comparative study of various traders following different trading strategies. We design an agent-based artificial stock market consisting of two opposing types of traders: “rational traders” (or “fundamentalists”) and “imitators” (or “chartists”). Rational traders trade by trying to optimize their short-term income. On the other hand, imitators trade by copying the majority behavior of rational traders. We obtain the wealth distribution for different fractions of rational traders and imitators. When rational traders are in the minority, they can come to dominate imitators in terms of accumulated wealth. On the other hand, when rational traders are in the majority and imitators are in the minority, imitators can come to dominate rational traders in terms of accumulated wealth. We show that survival in a finance market is a kind of minority game in behavioral types, rational traders and imitators. The coexistence of rational traders and imitators in different combinations may explain the market’s complex behavior as well as the success or failure of various trading strategies. We also show that successful rational traders are clustered into two groups: In one group traders always buy and their wealth is accumulated in stocks; in the other group they always sell and their wealth is accumulated in cash. However, successful imitators buy and sell coherently and their wealth is accumulated only in cash.

MICROSTRUCTURE DYNAMICS AND AGENT-BASED FINANCIAL MARKETS: CAN DINOSAURS RETURN?

2012 ◽  
Vol 15 (supp02) ◽  
pp. 1250060 ◽  
Author(s):  
MICHAEL KAMPOURIDIS ◽  
SHU-HENG CHEN ◽  
EDWARD TSANG
Keyword(s):  
Stock Market ◽  
Genetic Programming ◽  
Financial Markets ◽  
Trading Strategies ◽  
Self Organizing Maps ◽  
Market Models ◽  
Agent Based ◽  
Time Periods ◽  
Artificial Stock Market ◽  
Rule Inference

This paper formalizes observations made under agent-based artificial stock market models into a concrete hypothesis, which is called the Dinosaur Hypothesis. This hypothesis states that the behavior of financial markets constantly changes and that the trading strategies in a market need to continuously co-evolve with it in order to remain effective. After formalizing the hypothesis, we suggest a testing methodology and run tests under 10 international financial markets. Our tests are based on a framework that we recently developed, which used Genetic Programming as a rule inference engine, and Self-Organizing Maps as a clustering machine for the above rules. However, an important assumption of that study was that maps among different periods were directly comparable with each other. In order to allow this to happen, we had to keep the same clusters throughout the different time periods of our experiments. Nevertheless, this assumption could be considered as strict or even unrealistic. In this paper, we relax this assumption. This makes our model more realistic. In addition, this allows us to investigate in depth the dynamics of market behavior and test for the plausibility of the Dinosaur Hypothesis. The results show that indeed markets' behavior constantly changes. As a consequence, strategies need to continuously co-evolve with the market; if they do not, they become obsolete or dinosaurs.

scholarly journals Entrepreneurship in small and medium-sized enterprises: Comparative study between Slovakia and Poland for the years 2001–2007

2008 ◽  
Vol 54 (No. 8) ◽  
pp. 358-366 ◽  
Author(s):  
I. Ubrežiová ◽  
K. Wach ◽  
J. Horváthová
Keyword(s):  
Comparative Study ◽  
National Economy ◽  
Transition Economy ◽  
The Other ◽  
Regional Structure ◽  
Main Attention ◽  
Supporting System ◽  
Other Hand ◽  
The Impact

The main attention of the submitted paper is devoted to the comparison of development of entrepreneurship in Slovak and Polish small and medium-sized he enterprise sector. The conditions for blooming entrepreneurship are created in the national economy. Especially the role of SMEs in the transition economy, both in Slovakia and Poland, has the impact on SMEs. The entrepreneurship of small and medium-sized enterprises is extended in the whole Slovakia. From the viewpoint of the regional structure, most enterprises are located in the Bratislavský region (30.4%), Košický region (11.8%), Žilinský region (10.1%) and Trenčianský region (10.1%). On the other hand, the least of enterprises were registered in the Nitrianský region (8.9%), Trnavský region (9.2%) and Banskobystrický region (9.6%). Small and medium entrepreneurship is diversed throughout Poland. The average small and medium entreprenership ratio is 44.5, while the highest is in the Mazowieckie region – 55.2% and the lowest in the Podkarpackie region – 30 %. The supporting system for private entrepreneurship in both countries, Slovakia and Poland, is very similar and the entrepreneurs are satisfied with its offer and help.

scholarly journals An Agent-Based Approach to Artificial Stock Market Modeling

2020 ◽  
Vol 168 ◽  
pp. 161-169
Author(s):  
Samuel Vanfossan ◽  
Cihan H. Dagli ◽  
Benjamin Kwasa
Keyword(s):  
Stock Market ◽  
Agent Based ◽  
Artificial Stock Market

A Comparative Study of Embelia Schiperi and Embelia Keniensis on Blood Glucose and Triglycerides in Normal and Epinephrine- Induced Hyperglycemic Mice

1999 ◽  
Vol 27 (03n04) ◽  
pp. 365-370
Author(s):  
Atsushi Kato ◽  
Toshihiro Miura ◽  
Yumi Nishiyama ◽  
Yoko Tachibana ◽  
Yasuhiro Ohnishi ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Comparative Study ◽  
Methanol Extract ◽  
Intraperitoneal Administration ◽  
The Other ◽  
Blood Cholesterol ◽  
Lipid Lowering ◽  
Other Hand ◽  
Lowering Activity

Intraperitoneal administration of the methanol extract of Embelia schiperi (ES) to normal mice caused a significant decrease in blood glucose (p < 0.01) and a significant increase in triglycerides 4 hours after administration at 100 mg/kg (p < 0.01). The toluene fraction of Embelia keniensis methanol extract (TS) showed hypoglycemic and lipid lowering activity 7 hours after intraperitoneal administration at 100 mg/kg. In addition, TS (100 mg/kg) administration significantly decreased blood glucose in epinephrine-induced hyperglycemic mice (p < 0.01). Moreover, ES tended to increase while TS tended to decrease the blood triglycerides in epinephrine-induced hyperglycemic mice. On the other hand, no changes in blood cholesterol were observed after the administration of ES or TS in normal and epinephrine-induced hyperglycemic mice. We found that two species from Embelia, ES and TS, have different activities on blood glucose and triglycerides in normal and epinephrine-induced hyperglycemic mice.

scholarly journals A comparative study of using formalin in fish of Tangail and Tongi town

2015 ◽  
Vol 21 ◽  
pp. 43-49
Author(s):  
Luthfunnesa Bari ◽  
M Ariful Islam ◽  
Zannatul Ferdous ◽  
M Atiqul Azman ◽  
Shahanaz Khatun ◽  
...  
Keyword(s):  
Comparative Study ◽  
Industrial Research ◽  
The Other ◽  
Other Hand ◽  
Fish Samples

Context: Recent reports of media have brought great attention to the problem of formalin used by whole sellers and venders in preserving fish. It is evident from several studies that fish items in different markets in Bangladesh are treated with formalin for preservation which is highly hazardous and carcinogenic chemical. Objectives: The study was undertaken to determine the presence of formalin in fishes collected from various wet markets of Tangail and Tongi town. Materials and Methods: From 12 selected wet markets, various species of fishes were collected and presence of formalin was detected using the “formalin detection kit in fish” developed by Bangladesh Council of Scientific and Industrial Research (BCSIR). Results: It was found that 16 fishes were formalin contaminated out of 192 fish samples in which 0% in Santosh bazar, 11.11% in Soi ani bazar, 13.33% in Park bazar, 14.81% in Old bus stand bazar, 0% in Chara bari bazar and 12.82% in New bus stand bazar of Tangail town. On the other hand, 33 formalin contaminated fish out of 171 were obtained in which 0% in Coto bazar, 20% in Gazipura bus stand bazar, 37.5% in Chourasta bazar, 0% in Boro bari bazar, 36.36% in CheragAli bazar and 20% in Tongi bazar of Tongi town. The study indicates that almost 8.33% of fish samples in Tangail town and 19.29% of fish samples in Tongi town were formalin contaminated. Conclusion: The present study revealed that in Tangail town 75% imported fish and 25% local fishes were formalin contaminated whereas in Tongi town, 82% imported fishes and 18% local fishes were formalin contaminated. DOI: http://dx.doi.org/10.3329/jbs.v21i0.22518 J. bio-sci. 21: 43-49, 2013

scholarly journals A Cooperative Coevolutionary Stock Trading Model Using Genetic Network Programming-Sarsa

2012 ◽  
Vol 16 (5) ◽  
pp. 581-590 ◽  
Author(s):  
Yang Yang ◽  
◽  
Zhaoping He ◽  
Shingo Mabu ◽  
Kotaro Hirasawa
Keyword(s):  
Stock Market ◽  
Genetic Network ◽  
Trading Strategies ◽  
The Other ◽  
Network Programming ◽  
Cooperative Coevolution ◽  
Stock Trading ◽  
Trading Model ◽  
Genetic Network Programming

This paper presents a cooperative coevolutionary approach for stock trading model using Genetic Network Programming-Sarsa called CCGNP-Sarsa. Although theoretically, a single algorithm with sufficient size could solve any problem, in practice the stock market problem is too large and too complex to construct the appropriate algorithm to solve it. For such problems, cooperative coevolution which simultaneously evolves several species with the sum of their fitness values has been proposed as a successful alternative and was applied to make the stock trading models an integrated one. Such an approach allows different species of the GNP-Sarsa model to evolve in a parallel and cooperative manner, which makes the generated model more robust, generalized and efficient for generating stock trading strategies. CCGNP-Sarsa places as few restrictions as possible to the structure, allowing the model to obtain a wide variety of architecture during the evolution and to be easily used to solve complicated problems. To confirm the effectiveness of the proposed method, the simulations are carried out and compared with other methods like GNP-Sarsa with subroutines, GNP-Sarsa and Buy&Hold method. The results shows that the stock trading models using CCGNP-Sarsa outperforms all the other methods.

scholarly journals معايير التأثر والتأثير بين رواية زينب وفريدة هانم: دراسة مقارنة (The Criteria of Influence and Effect between the Novel of Zainab and Faridah Hanum: A Comparative Study)

1970 ◽  
Vol 2 (1) ◽  
Author(s):  
روسني بن سامة (Rosni Bin Samah)
Keyword(s):  
Comparative Study ◽  
The Other ◽  
Creative Work ◽  
The Novel ◽  
Other Hand ◽  
The Status ◽  
Literary Circles

ملخص البحث:تعد رواية فريدة هانم الماليزية أول رواية فنية في الأدب الماليزي الحديث، حيث اتفق الأدباء والباحثون على ذلك، ولكنهم اختلفوا في أصليتها الإبداعية لوجود تصوير البيئة المصرية لأحداثها. ومن جهة أخرى عاش البطل في الرواية من بدايتها حتى نهايتها في القاهرة، ومنهم من رأى بأنها رواية مترجمة من الرواية العربية، ومن منهم من رأى بأنها رواية إبداعية ابتدعها الراوي بتصوير البيئة المصرية. وتهدف هذه الدراسة إلى الكشف عن حقيقة أمرها بتجلية معايير تأثرها برواية زينب، حيث قام الباحث بالمقارنة بين الروايتين، وتوصلت النتائج إلى أن رواية فريدة هانم الماليزية تأثرت برواية زينب المصرية ولكن راويها لا يترجم تلك الرواية بل قام بالاطلاع عليها ثم صاغها بصياغته الجديدة مع رعاية البيئة المصرية وعاء لها.الكلمات المفتاحية: رواية هانم المصرية- رواي هانم الماليزية- معاير الرواية -المقارنة- التشابه.Abstract:Faridah Hanum is regarded as the first  Malay novel in Modern Malay Literature by the literary circles and researchers but they are in disagreement on the originality of its creativity features since its setting is Egyptian. On the other hand, its hero lived in Cairo from the beginning of the story until the end. Some of them viewed that it is a translated version of an Arabic novel while others still see it as a creative work with an Egyptian background. This study aims at discovering the truth about the status of the novel through pointing out the influences of the Arabic novel “Zainab” on it. This is done through comparing between the two novels. It is concluded that the Malay novel “Faridah Hanum” indeed had been influenced by “Zainab”, but it is not a translation but rather the writer happened to have read the Zainab novel but later on tried to put the story in  a new plot though he did retain the Egytian background as the setting.Keywords: Hanum Egyptian Novel–  Hanim the Malaysian novelist– Standards of Novel – Comparison– Similarities.Abstrak:Faridah Hanum dianggap sebagai novel Melayu pertama dalam kesusasteraan Melayu moden oleh kumpulan sasterawan dan penyelidik-penyelidik namun mereka masih lagi berada dalam percanggahan tentang keasliannya kerana persekitarannya yang berlatarkan sebuah negara asing: Mesir kerana wiranya tinggal di Kaherah dari permulaan cerita sehinggalah ke penghujungnya. Sebahagian dar mereka melihat yang ia adalah satu terjemahan satu novel Arab manakala yang lain masih menyaksikan ia adala satu hasil kerja kreatif dengan hanya menggunakan latar belakang Mesir. Kajian ini bertujuan untuk menemukan beberapa fakta tentang status novel tersebut dengan melihat kepada pengaruh-pengaruh novel Arab “Zainab”  yang terdapat padanya. Ini dilaksanakan melalui perbandingan antara dua novel tersebut. Kesimpulannya, novel Melayu “Faridah Hanum” sememangnya telah dipengaruhi oleh “Zainab”, namun ia bukan satu terjemahan tetapi penulis telah berpeluang  membaca novel Zainab dan kemudiannya cuba untuk meletakkan cerita dalam satu plot baru walaupun dia mengekalkan latar belakang Mesir sebagai persekitaran ceritanya.Kata kunci: Orang Mesir– Hanum– Hanim novelis Malaysia– Piawaian Novel– Persamaan-persamaan– Perbandingan.

scholarly journals A Comparative Study on Shi‘îte Tafsîr of the Qur’an 24: 55 and the Bible Isaiah 11:1-9: Theology of Hope in the Concept of Mahdism and Messianism

MUTAWATIR ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 215-234
Author(s):  
Luthfi Rahman
Keyword(s):  
Comparative Study ◽  
The State ◽  
The Other ◽  
The Bible ◽  
Other Hand ◽  
Library Research ◽  
Theological Discourse ◽  
Biblical Commentaries ◽  
The Ideal

This paper engages with the theological discourse on the state of al-Mahdi in Shi‘i tradition and the Peaceful Kingdom of Christianity. It focuses on two particular narratives, Quranic one focusing on Shi‘i tafsir Qur’an 24:55 and Biblical one concerning on Isaiah 11:1-19. This study employs library research looking specifically at Qur’anic and Biblical commentaries. By comparing the texts, it is found out that the first insists on several requirements to realize the promise of God (the state of al-Mahdî) by performing active struggles i.e. possessing strong faith and doing righteous action. On the other hand, the latter provides the description of the ideal circumstance when Messiah comes to a region in which both the ruler and the ruled do active struggles. The first still emphasizes the importance of strong faith while the second doesn’t. Yet, both narratives share that active struggles and righteous actions must be at stake.

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