ML-based Arm Recommendation in Short-Horizon MABs

2021 ◽  
Author(s):  
Or Zipori ◽  
David Sarne
Keyword(s):  
Author(s):  
Sam James Henkel ◽  
J. Spencer Martin ◽  
Federico Nardari
Keyword(s):  

2013 ◽  
Vol 25 (1) ◽  
pp. 199-229 ◽  
Author(s):  
Shane S. Dikolli ◽  
Susan L. Kulp ◽  
Karen L. Sedatole

ABSTRACT We investigate whether boards of directors adjust compensation contracts to lengthen a CEO's decision horizon, and if the use of such contract adjustments depends on the levels of external (i.e., shareholder-based) and internal (i.e., board-based) CEO monitoring. Based on insights from the career-concerns literature, we identify short-horizon CEOs as those nearing retirement, at a firm with a current earnings decline or loss, and/or with an impending job change. We find that firms with a CEO identified as having a short-horizon place greater contract weight on forward-looking information. This horizon-lengthening contract adjustment is less pronounced when there is greater external monitoring (i.e., as proxied by a high level of shareholder rights), consistent with the intuition that increased shareholder rights mitigate CEO entrenchment, leading to less myopic decision making, independent of a contract adjustment. However, we also find that the horizon-lengthening contract adjustment is more pronounced when there is greater internal monitoring (i.e., as proxied by characteristics of the board), consistent with the intuition that increased employment risk from more intense internal monitoring itself creates a demand for increased incentive weights as a means of compensating the CEO for the increased risk. Data Availability: Data used for this study are derived from publicly available databases and proxy statements. JEL Classifications: M52; M41; J33.


2013 ◽  
Vol 29 (6) ◽  
pp. 1799
Author(s):  
Abdollah Khani ◽  
Ali Saeedi ◽  
Asieh Khadem Khorasani

<p>This research investigates the relationship between stock trading of individual investors and returns in short horizon in an emerging market. The results indicate that the individuals would like to invest in stocks after declining in the preceding month prices and they would like to sell after increasing in prices. Moreover, we find that there are positive abnormal returns in the month after high buying by individuals and there are negative abnormal returns following high individuals selling. The result is consistent with the literature that the individuals play roles of liquidity providers because they can meet the institutional need of immediacy.</p>


2020 ◽  
Vol 12 (3) ◽  
pp. 123-160
Author(s):  
Muhammad Owais Qarni ◽  
Saqib Gulzar

This study examines the dynamic nature of return spillover across Bitcoins indices and foreign exchange pairs denominated in 6 major trading currencies. The findings of spillover index, Spillover Asymmetry Measure (SAM) and frequency connectedness methodologies indicate that return spillover across Bitcoin markets and foreign exchange pairs dominated in six major trading currencies is very low. The intra-market return spillover for the Bitcoin markets and foreign exchange pairs is found to be significant. Presence of asymmetry in the return spillover is also found. Evidence indicates that return spillover are dominated in short horizon, with significant spillover occurring within 4 days of an event. The low integration of Bitcoin markets with the foreign exchange markets provide significant implication for portfolio diversification and risk minimization.


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