Relações entre o cobrador do pênalti, o goleiro e o momento do jogo no futebol

The soccer is a sport that can be decided in a penalty, including world champions have already been defined For this, shoot a penalty or defend a penalty can build heroes and villains in this sport so popular and competitive. Studying penalty kicks will a better understanding of the actions of goalkeepers and kickers. This study looked at 527 penalty charges in professional games in 2010 to 2015. The objective was to verify the fact that the charge be right-handed or left-handed interfered with the action of the goalkeeper, differences in efficiency of left-and right-handed players, check results in penalty situations in the match and in the disputes of penalties and performance of players in club games and selections. The complete use in 527 penalty charges was 74%. It is concluded that if the debt collector is right-handed, the goalie moves to the right and if it's left-handed move more to the left. Tax collectors selections had better use (77%) than the clubs. Right-handers presented more efficacy (76%) compared to lefties (66%). The index of the goalkeepers was greater when centered (22%), although 91% of all charges being directed to the right and left sectors

Relações entre o cobrador do pênalti, o goleiro e o momento do jogo no futebol

The soccer is a sport that can be decided in a penalty, including world champions have already been defined For this, shoot a penalty or defend a penalty can build heroes and villains in this sport so popular and competitive. Studying penalty kicks will a better understanding of the actions of goalkeepers and kickers. This study looked at 527 penalty charges in professional games in 2010 to 2015. The objective was to verify the fact that the charge be right-handed or left-handed interfered with the action of the goalkeeper, differences in efficiency of left-and right-handed players, check results in penalty situations in the match and in the disputes of penalties and performance of players in club games and selections. The complete use in 527 penalty charges was 74%. It is concluded that if the debt collector is right-handed, the goalie moves to the right and if it's left-handed move more to the left. Tax collectors selections had better use (77%) than the clubs. Right-handers presented more efficacy (76%) compared to lefties (66%). The index of the goalkeepers was greater when centered (22%), although 91% of all charges being directed to the right and left sectors

Effects of pitch area-restrictions on tactical behavior, physical and physiological performances in soccer large-sided games

The aim of this study was to identify how pitch area-restrictions affects the tactical behavior, physical and physiological performances of players during soccer large-sided games. A 10 vs. 9 large-sided game was performed under three experimental conditions: (i) restricted-spacing, the pitch was divided into specific areas where players were assigned and they should not leave it; (ii) contiguous-spacing, the pitch was divided into specific areas where the players were only allowed to move to a neighboring one; (iii) free-spacing, the players had no restrictions in space occupation. The positional data were used to compute players’ spatial exploration index and also the distance, coefficient of variation, approximate entropy and frequency of near-in-phase displacements synchronization of players’ dyads formed by the outfield teammates. Players’ physical and physiological performances were assessed by the distance covered at different speed categories, game pace and heart rate. Most likely higher values were found in players’ spatial exploration index under free-spacing conditions. The synchronization between dyads’ displacements showed higher values for contiguous-spacing and free-spacing conditions. In contrast, for the jogging and running intensity zones, restricted-spacing demanded a moderate effect and most likely decrease compared to other scenarios (~20-50% to jogging and ~60-90% to running). Overall, the effects of limiting players’ spatial exploration greatly impaired the co-adaptation between teammates’ positioning while decreasing the physical and physiological performances. These results allow for a better understanding of players’ decision-making process according to specific task rules and can be relevant to enrich practice task design, such that coaches acknowledge the differential effect by using specific pitch-position areas restrictions.

A Reliable Basis for Approximate Association Rules

For most of the work done in developing association rule mining, the primary focus has been on the efficiency of the approach and to a lesser extent the quality of the derived rules has been emphasized. Often for a dataset, a huge number of rules can be derived, but many of them can be redundant to other rules and thus are useless in practice. The extremely large number of rules makes it difficult for the end users to comprehend and therefore effectively use the discovered rules and thus significantly reduces the effectiveness of rule mining algorithms. If the extracted knowledge can’t be effectively used in solving real world problems, the effort of extracting the knowledge is worth little. This is a serious problem but not yet solved satisfactorily. In this paper, we propose a concise representation called Reliable Approximate basis for representing non-redundant approximate association rules. We prove that the redundancy elimination based on the proposed basis does not reduce the belief to the extracted rules. We also prove that all approximate association rules can be deduced from the Reliable Approximate basis. Therefore the basis is a lossless representation of approximate association rules.

Interestingness Measures for Multi-Level Association Rules

Association rule mining is one technique that is widely used when querying databases, especially those that are transactional, in order to obtain useful associations or correlations among sets of items. Much work has been done focusing on efficiency, effectiveness and redundancy. There has also been a focusing on the quality of rules from single level datasets with many interestingness measures proposed. However, with multi-level datasets now being common there is a lack of interestingness measures developed for multi-level and cross-level rules. Single level measures do not take into account the hierarchy found in a multi-level dataset. This leaves the Support-Confidence approach,which does not consider the hierarchy anyway and has other drawbacks, as one of the few measures available. In this paper we propose two approaches which measure multi-level association rules to help evaluate their interestingness. These measures of diversity and peculiarity can be used to help identify those rules from multi-level datasets that are potentially useful.