AGM-Style Revision of Beliefs and Intentions from a Database Perspective (Preliminary Version)

We introduce a logic for temporal beliefs and intentions based on Shoham's database perspective. We separate strong beliefs from weak beliefs. Strong beliefs are independent from intentions, while weak beliefs are obtained by adding intentions to strong beliefs and everything that follows from that. We formalize coherence conditions on strong beliefs and intentions. We provide AGM-style postulates for the revision of strong beliefs and intentions. We show in a representation theorem that a revision operator satisfying our postulates can be represented by a pre-order on interpretations of the beliefs, together with a selection function for the intentions

Graduality in Probabilistic Argumentation Frameworks

Gradual semantics are methods that evaluate overall strengths of individual arguments in graphs. In this paper, we investigate gradual semantics for extended frameworks in which probabilities are used to quantify the uncertainty about arguments and attacks belonging to the graph. We define the likelihoods of an argument’s possible strengths when facing uncertainty about the topology of the argumentation framework. We also define an approach to compare the strengths of arguments in this probabilistic setting. Finally, we propose a method to calculate the overall strength of each argument in the framework, and we evaluate this method against a set of principles

Measures of inconsistency and defaults

AbstractWe introduce a method for measuring inconsistency based on the number of formulas needed for deriving a contradiction. The relationships to previously considered methods based on probability measures are discussed. Those methods are extended to conditional probability and default reasoning

Dynamic Causality

Publisher PD

A Probabilistic Finite Temporal Logic for Policies and Intentions

We propose a new probabilistic temporal logic for Markov decision processes allowing us to reason about finite histories and policies. We comment on how the logic can express statements important for a theory of intention revision, show that it possesses the finite model property, and show that the model checking and satisfiability problems for the logic are both decidable

GENDER DIFFERENCES IN THE MORPHOLOGICAL CHARACTERISTICS AND MOTOR SKILLS OF CHILDREN AGED 7 TO 11

A sample of 655 participants (348 boys and 307 girls), schoolchildren aged 7 to 11, was included in a study of a system of 10 variables (4 morphological and 6 motor variables), with the aim of applying a multivariate analysis of variance and a canonical discriminant analysis to determine the statistical significance of the differences in the means between the genders in terms of morphological characteristics and motor skills. The obtained results indicated a statistically significant difference between the genders in the entire system of applied variables, at the p=.00 level, an univariately, that the boys, probably as a result of increased body weight (p=.01) and forearm volume (p=.00), had better results in motor skills as well, including explosive strength (the standing long jump, p=.00), body coordination (the polygon backwards, p=.00), repetitive strength (sit-ups, p=.00) and force (hyperextensions, p=.00), while the girls had better values only for flexibility (deep pull-up hang on the bench, p=.00). By using a canonical discriminant analysis, we isolated a single discriminant function (p=.00) whose structure is made up of seven variables, six of which belong to the boys, and only one of which (deep pull-up hang on the bench) belongs to the girls. In accordance with the obtained values, it is necessary to consider the development (extensive changes) in the morphological characteristics and motor skills of both boys and girls equally in physical education classes. These changes are ones which are not genetically limited, that is, ones which are still susceptible to change, so as to be able to perform optimum planning and programming and the operationalization of physical education classes based on the obtained indicators, as well as the control of the ontogenetic development of these relevant anthropological characteristics, under the influence of the programmed contents according to gender at this age

EFFECTS OF TECHNICAL AND TACTICAL CHARACTERISTICS ON THE PERFORMANCE OF THE TABLE TENNIS PLAYERS

The aim of the research was to determine the effects of applied technical and tactical characteristics of table tennis players on their success in competitions. The representative sample consisted of 48 top senior table tennis players from Bosnia and Herzegovina, age 18 and 36, selected on the basis of a qualification tournament. The measuring instruments for this study included eight assessment tests for the table tennis players' technical and tactical characteristics and one test for assessing success in table tennis competitions. Technical and tactical characteristics of the participants were evaluated by five experts who analyzed the efficacy of technical and tactical characteristics of the players on a scale ranging from 1 to 5. The methods of processing the results included descriptive statistical procedures, the multiple correlation coefficient, the determinant coefficient and a multiple regression analysis. The results indicate that technical and tactical characteristics have a major impact on the player's performance and are essential for table tennis success. Based on the value of the regression coefficients and their significance, it may be concluded that the 5 variables statistically significantly contribute to the regression model are: the efficiency of the serve; the efficiency of preventing the attack of the opponent and preparation of the players’ own attack; confidence when attacking across the table; the efficiency in the active defence and the efficiency of movement during the game. In the hierarchy of significance, the most important variables are the serve efficiency and efficiency of preventing the attack of an opponent and preparation of the player's own attack. The efficiency of the serve allows an attacker to realize technical and tactical ideas and usually gain initiative in the game. By returning a serve we can prevent or at least make it harder for the opponent to attack again. A serve return can also allow us to take the initiative