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Heterogeneity for the Win: One-Shot Federated Clustering [article]

Don Kurian Dennis, Tian Li, Virginia Smith
2021 arXiv   pre-print
We develop and analyze a one-shot federated clustering scheme, k-FED, based on the widely-used Lloyd's method for k-means clustering.  ...  We motivate our analysis with experiments on common FL benchmarks, and highlight the practical utility of one-shot clustering through use-cases in personalized FL and device sampling.  ...  We propose and analyze a one-shot communication scheme for federated clustering.  ... 
arXiv:2103.00697v2 fatcat:hubmvmutl5av7nei3dzt2divse

Dying to win? Olympic Gold medals and longevity

Adam Leive
2018 Journal of Health Economics  
events: on average, Olympic Gold medalists expected to win, but losers exceeded their expectations.  ...  Winning on a team confers a survival advantage, with evidence that higher mortality among losers may be due to poor performance relative to one's teammates.  ...  These conversions are consistent with the scoring metrics of the International Association of Athletics Federations.  ... 
doi:10.1016/j.jhealeco.2018.07.005 pmid:30165267 fatcat:anabpket3nfrnbjhscvs7nzrkq

When BERT Plays the Lottery, All Tickets Are Winning [article]

Sai Prasanna, Anna Rogers, Anna Rumshisky
2020 arXiv   pre-print
For fine-tuned BERT, we show that (a) it is possible to find subnetworks achieving performance that is comparable with that of the full model, and (b) similarly-sized subnetworks sampled from the rest  ...  of the model perform worse.  ...  to their clusters for running our experiments, and the anonymous reviewers for their insightful reviews and suggestions.  ... 
arXiv:2005.00561v2 fatcat:n4h3va3rdnevxmmw3c4ealynpm

The use of classification and regression tree when classifying winning and losing basketball teams

Miguel A. Gómez, Sergio J. Ibáñez
2017 Kinesiology  
The results identified importance of defensive-rebounds (100%), successful free-throws (94.7%), assists (86.1%), and fouls committed (55.9%) for the classification of winning and losing teams in the fast-paced  ...  The influence of situational variables was identified only for team quality in the slow-paced games. The present findings allow coaches for a better control of games and competition.</div>  ...  A k-means cluster analysis identified two groups: the worst teams (winning%=42.25±9.32) and the best teams (winning%=61.51±12.24). Game location.  ... 
doi:10.26582/k.49.1.9 fatcat:5qqym4xs7rb65jykwieh2rk73m

Analysis of the winning probability and the scoring actions in the American professional soccer championship. [Análisis de la probabilidad de ganar y de las acciones que conducen al gol en la liga americana de fútbol profesional]
Analysis of the winning probability and the scoring actions in the American professional soccer championship

Albert Altarriba-Bartés, M. Luz Calle, Antonio Susín, Bruno Gonçalves, Marc Vives, Jaime Sampaio, Javier Peña
2020 Revista Internacional de Ciencias del Deporte  
As the match approached the end, winning or losing was even more determinant and less reversible (0.85 vs. 0.72 for the home and away team respectively when they were ahead on the score in the minute 75  ...  The temporal analysis revealed that scoring first increased the probability of winning the match significantly and showed dependency on the time in which the goal was scored.  ...  NORTE-01-0145-FEDER-000026, co-financed by Fundo Europeu de Desenvolvimento Regional (FEDER) by NORTE 2020.  ... 
doi:10.5232/ricyde2020.05906 fatcat:jxvhpngjfnfdnnae75ctk75nh4

Communication-Efficient and Personalized Federated Lottery Ticket Learning [article]

Sejin Seo, Seung-Woo Ko, Jihong Park, Seong-Lyun Kim, Mehdi Bennis
2021 arXiv   pre-print
Nonetheless, LotteryFL relies on unicast transmission on the downlink, and ignores mitigating stragglers, questioning scalability.  ...  Motivated by this, in this article we propose a personalized and communication-efficient federated lottery ticket learning algorithm, coined CELL, which exploits downlink broadcast for communication efficiency  ...  One way is explicitly clustering the users based on their task similarity calculated, for instance, using the global information on the dataset statistics and loss functions [3] , [7] , [8] .  ... 
arXiv:2104.12501v1 fatcat:pyox62apbvaghkyouww3xqkf54

The Effect of the Return of Serve on the Server Pair's Movement Parameters and Rally Outcome in Padel Using Cluster Analysis

Jesus Ramón-Llin, Jose Francisco Guzmán, Salvador Llana, Rafa Martínez-Gallego, Nic James, Goran Vučković
2019 Frontiers in Psychology  
Conclusion: It was suggested that the aim of the ROS in Padel was to prevent the serving pair winning the rally quickly, since the advantage of the serve diminished after around 6 to 8 shots.  ...  This was best achieved by good depth on lobs, regardless of the direction, and pace on low shots, predominately aimed toward the server.  ...  Cluster analysis is a data mining technique that enables the formation of groups within a data set based on maximising the homogeneity of cases within a group and the heterogeneity between clusters (Hair  ... 
doi:10.3389/fpsyg.2019.01194 pmid:31191397 pmcid:PMC6546820 fatcat:vxto5g55xnctfgzzwtbyejqp5u

Notational Analysis of Elite Men's Water Polo Related to Specific Margins of Victory

Corrado Lupo, Giancarlo Condello, Antonio Tessitore
2012 Journal of Sports Science and Medicine  
at the end of the 4(th) quarter; winning, W; losing, L) and unbalanced (>3 goals; winning, MW; losing, ML) games.  ...  The present study aimed to analyze the water polo matches of the men's World Championships, comparing technical and tactical aspects of winning and losing teams, during closed (≤ 3 goals of margin of victory  ...  However, for each game situation, winning teams showed high values of shots (despite statistically reported only for Counterattacks, between MW and L, and ML) originated from the "zone 6" (i.e., the central  ... 
pmid:24149362 pmcid:PMC3737947 fatcat:zkfoqefwwbhllcssfjrb2lcwou

Double auction and profit maximization mechanism for jobs with heterogeneous durations in cloud federations

Runhao Lu, Yuning Liang, Qing Ling, Changle Li, Weigang Wu
2021 Journal of Cloud Computing: Advances, Systems and Applications  
Then, to maximize the individual profits, we propose a dynamic resource bidding scheme and a job scheduling strategy based on our importance model of jobs with heterogeneous execution times and resource  ...  On the other hand, they need to efficiently trade the resources with a suitable mechanism, typically auction, so as to guarantee the participants' profits.  ...  Our work also focuses on individual profit maximization for selfish clouds in federation, and we extend the problem studied in [4] by considering heterogeneous job durations.  ... 
doi:10.1186/s13677-021-00249-3 fatcat:h3qy5qyinfdfdplodaay3nlboi

Padel Match Analysis: Notational and Time-Motion Analysis during Official Italian Sub-Elite Competitions

Alexandru Nicolae Ungureanu, Corrado Lupo, Paolo Riccardo Brustio
2022 International Journal of Environmental Research and Public Health  
One serve out of five ended in errors (almost half were net errors); fewer errors during serve return shots represented an advantage for the winning pairs.  ...  However, sub-elite winning pairs performed fewer volleys than the losing side and fewer errors on volleys.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/ijerph19148386 pmid:35886239 pmcid:PMC9324445 fatcat:q5fpxlita5eybcnyq2c2lvj2ga

The impact of psychological traits on performance in sequential tournaments: Evidence from a tennis field experiment

Christoph Bühren, Philip J. Steinberg
2019 Journal of Economic Psychology  
In the experiment, we also varied the payment schemes (individual, team, competition) to control for moderating effects of different incentives.  ...  Our results shed new light on the discussion of first vs. second mover advantages and performance under pressure.  ...  Philip Steinberg is grateful for the financial support from the Dr. Werner Jackstädt-Stiftung.  ... 
doi:10.1016/j.joep.2018.12.010 fatcat:hcqhwfpw5ffl5ctgkjcwo7q5pa

Analysis of discriminatory game variables between winners and losers in women's handball world championships from 2007 to 2017

Leandro V. de Paula, Flávia E. Costa, Renato M. Ferreira, Rafael P. Menezes, Francisco Z. Werneck, Emerson F. Coelho, Pablo J. Greco
2020 Kinesiology  
For victory, the number of technical faults reduce the chances of winning.  ...  We concluded that the decisive variables for victory in the balanced games showed a greater weight, with a special emphasis on stolen balls followed by offensive variables (throw efficiency indicators,  ...  To test the differences in game statistics between the winning and losing teams within each cluster, an analysis of variance (one-way ANOVA) was performed for the variables that respected such assumptions  ... 
doi:10.26582/k.52.1.6 fatcat:5xctgwyfcfcsjpzgz4lwgg5df4

Match Analysis in Handball: A Systematic Review

Willian Roque Ferrari, University of Coimbra, Faculty of Sport Sciences and Physical Education, Coimbra, Portugal, Hugo Sarmento, Vasco Vaz, University of Coimbra, Faculty of Sport Sciences and Physical Education, Research Unit for Sport and Physical Activity (CIDAF), Coimbra, Portugal, University of Coimbra, Faculty of Sport Sciences and Physical Education, Research Unit for Sport and Physical Activity (CIDAF), Coimbra, Portugal
2019 Montenegrin Journal of Sports Science and Medicine  
The main objective of this research is to focus on a systematic review of the literature on handball, to identify potential areas for future research in this specific area of specialization.  ...  The studies focused their analysis on four main variables of performance: total shots and finals, end match outcome, Time Outs (TTos), and the relationship between home advantage.  ...  Financed by CAPES -Brazilian Federal Agency for Support and Evaluation of Graduate Education within the Ministry of Education of Brazil.  ... 
doi:10.26773/mjssm.190909 fatcat:fr4l5oonvfemvlwliso6phfzva

Essays on Experimental Investigation of Lottery Contests

Roman M. Sheremeta
2009 Social Science Research Network  
In best-shot contests, where group performance depends on the best performer within the group, most of the effort is expended by strong players while weak players free-ride.  ...  The final essay investigates contests between groups. Each group has one strong player, with a higher valuation for the prize, and two weak players, with lower valuations.  ...  for the best-shot contest (pvalue < 0.01).  ... 
doi:10.2139/ssrn.2353154 fatcat:xzotolnq5zdhvgnkhdftz5lznu

Analysing a built-in advantage in asymmetric darts contests using causal machine learning [article]

Daniel Goller
2020 arXiv   pre-print
Nevertheless, the contest design produces unequal probabilities of winning for equally skilled contestants because of asymmetries in the built-in advantage associated with social pressure for contestants  ...  We analyse a sequential contest with two players in darts where one of the contestants enjoys a technical advantage.  ...  for the starting player on winning the match.  ... 
arXiv:2008.07165v1 fatcat:nh7ghxqsbrbpfcchqpr3d3gg54
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