In this paper, missing attribute values in incomplete data sets have three possible interpretations: lost values, attribute-concept values and ‘do not care’ conditions. For rule induction, we use characteristic sets and generalized maximal consistent blocks. Therefore, we apply six different approaches for data mining. As follows from our previous experiments, where we used an error rate evaluated by ten-fold cross validation as the main criterion of quality, no approach is universally the best. Thus, we decided to compare our six approaches (...) using complexity of rule sets induced from incomplete data sets. We show that the smallest rule sets are induced from incomplete data sets with attribute-concept values, while the most complicated rule sets are induced from data sets with lost values. The choice between interpretations of missing attribute values is more important than the choice between characteristic sets and generalized maximal consistent blocks. (shrink)

In this paper incomplete data sets, or data sets with missing attribute values, have three interpretations, lost values, attribute-concept values and ‘do not care’ conditions. Additionally, the process of data mining is based on two types of probabilistic approximations, global and saturated. We present results of experiments on mining incomplete data sets using six approaches, combining three interpretations of missing attribute values with two types of probabilistic approximations. We compare our six approaches, using the error rate computed as a result (...) of ten-fold cross validation as a criterion of quality. We show that for some data sets the error rate is significantly smaller (5% level of significance) for lost values, for some data sets the smaller error rate is associated with attribute-concept values, and sometimes with ‘do not care’ conditions. Again, for some approaches the error rate is significantly smaller for saturated probabilistic approximations than for global probabilistic approximations, while for some approaches it is the other way around. Thus, for an incomplete data set, the best approach to data mining should be chosen by trying all six approaches. (shrink)

In the 1970s Codd introduced the relational algebra, with operators selection, projection, union, difference and product, and showed that it is equivalent to first-order logic. In this paper, we show that if we replace in Codd’s relational algebra the product operator by the “semijoin” operator, then the resulting “semijoin algebra” is equivalent to the guarded fragment of first-order logic. We also define a fixed point extension of the semijoin algebra that corresponds to μGF.

Chciałem Go pożegnać. Kilkakrotnie próbowałem napisać choć parę słów. O Nim samym. Okazało się, że nie potrafię. Udało mi się tylko przedstawić Jego poglądy na reizm Tadeusza Kotarbińskiego, ale uczyniłem to gdzie indziej. Muszę tu poprzestać na ofiarowaniu Mu tego, co napisałem na Jego dziewięćdziesiąte urodziny, w osiemdziesięciolecie naszej przyjaźni.

Jerzy Perzanowski s ideas were based on an original blend of logic and ontology in what he called onto/logic, where the slash is meant to suggest a quotient of ontology by logic. Perzanowski began as a logician, his early works being on modal logic, then gradually shifted his interest to logical philosophy, meaning not so much philosophy of logic as philosophy informed by logic. Perzanowski was a rare breed of analytical philosopher who thought that a philosophical theory of everything (...) was worthwhile. In this systematic spirit, he began with method. He presented his method of total analysis and synthesis quite simply: reduce the object of research to its simplest possible constituents, and then combine them in some way. Better still, combine them in every possible way, thereby producing a space of possibilities analogous to (and in certain cases identical with) the logical space. Thus, analysis and synthesis differ from a trivial disassembly and reassembly.". (shrink)

The literature suggests that the moral sense is based on innate abilities. In fact, it has been shown that children show the capacity for moral discernment, emotions and prosocial motivations from an early age. However, the moral sense is a complex construct of an evolutionary and social nature that evolves under the influence of interpersonal relationships. The emergence and development of moral sense is a challenge that has prompted many research studies with the aim of achieving a clear comprehension of (...) moral development. However, success has been scarce, and studies relevant to this subject are limited. Thus, a systematic review of studies relevant to this topic was conducted to clearly establish how moral sense emerges and develops. An Ovid search was conducted to retrieve relevant items for this systematic review. The databases that were electronically visited are Cross-reference, Google Scholar and PubMed. Strict inclusion and exclusion criteria were imposed on the retrieved items to retain only relevant resources. Twenty-six studies were found valid for inclusion in this systematic review. The results of these studies were presented differently: In order to effectively analyze the selected papers and bring out the results more clearly, a categorization of the approaches adopted in the studies was carried out. The approaches identified were: “Natural Moral Sense,” “Social Relationships and Moral Development,” and “Environmental Factors and Moral Development.” The evidence that emerged from the analysis of the papers was collected to produce a general basic model that explains moral development while also serving as a link between the various studies. First, moral sense is found to be innate in humans; individuals can naturally respond morally to various dilemmas. As seen among children and young infants, moral sense naturally exists. Second, it can be socially nurtured through social interactions and exposure to various environmental factors. Various research studies were reviewed in this systematic review to obtain a consensus on how moral sense emerges and develops. From the systematic review, the moral sense is found to be innate. However, moral development is fostered by social interactions and environmental factors. (shrink)

Preliminary expectoration -- Alas a dirty third: the logic of death -- Thomas Bernhard's rant -- Following Sebald -- Tickling the corpse: Tom Stoppard's memento mori -- Don Rickles's rant -- Too late, my brothers -- Re: Barth.

Current research has focused on gender as a conditioning factor in students’ study choices, highlighting the existence of gender stereotypes associated with these choice. The general objective of this article is to analyse if there are differences based on sex in the choice of musical instruments in music conservatories. The methodology used is quantitative. We have analysed the data on enrolment in the different instrumental specialities of two public music conservatories in Seville (Spain) at the three levels of music education: (...) Basic, Professional and Higher Music Education. This article contrasts if there are instrumental specialities that are mostly chosen by one or the other sex, and to check if this sexual segregation has been produced by chance or can be explained by other causes. This investigation was carried out for a total of 4120 students from two different conservatories. The main conclusions of the study were the existence of feminized and masculinized instrumental families, and the relationship between the variables “students’ sex” and “instrumental families and musical specialities” was significant with a medium effect size. This research confirms that men and women choose the instruments that have traditionally been associated with their male or female roles respectively. (shrink)

Jerzy Franczak comprehensively presents Jacques Rancière's thought by emphasizing the relations between politics and literature. The detailed analysis considers the context of modern aesthetics and political philosophy, which is why the book introduces further protagonists, such as Louis Althusser, Michel Foucault, Pierre Bourdieu, or Jean-François Lyotard. Franczak first reconstructs Rancière's original philosophy of literature so as to then immediately apply it in readings of select world literature masterpieces by Gustav Flaubert, Max Jacob, Bertold Brecht, Vladimir Nabokov, and Philip Roth.

Differences on Organizational Practices and Preferred Leader Attributes Between Polish Managers Investigated in 1996/1997 and 2008/2009 This study compares Polish managers' perceptions of their organizational culture and their beliefs concerning attributes necessary for leadership effectiveness, investigated in 1996/1997 and 2008/2009. As was unexpected, our results show that Polish managers of 2008/2009 score significantly higher than managers of 1996/1997 on Power Distance, Individualism, Masculinity and slightly lower on Future Orientation and Humane Orientation. Our findings suggest that more individualistic orientation in Polish (...) organizations is still necessary in order to survive and be effective during the current turbulent and highly uncertain economic and business conditions. Relatively higher scores on Power Distance on the part of Polish managers being studied in the years 2008/2009 are also in line with findings concerned with attributes necessary for leadership effectiveness. Mean comparisons on beliefs concerning attributes necessary for leadership effectiveness show that Polish managers of 2008/2009 in comparison with their counterparts studied in 1996/1997 scored higher on Autocratic Orientation, Risk Avoidance, Isolationistic Orientation and Individualistic Orientation. Our findings are also consistent with regard to leadership attributes of Performance Orientation, Team Orientation, Decisiveness, Diplomatic, Humane Orientation, Integrity, Visionary and Charismatic/inspirational, which are somewhat less strongly associated with leadership effectiveness by Polish middle managers investigated in 2008/2009 in comparison with their counterparts studied in 1996/1997. (shrink)

Table of ContentsAndrzej KLAWITER, Krzystof #ASTOWSKI: Introduction: Originality, Courage and Responsibility List of Books by Leszek NowakSelected Bibliography of Leszek Nowak's WritingsScience and Idealization Theo A.F. KUIPERS: On Two ...

The smallest ambition of this essay is to demonstrate that Rider, the central character in William Faulkner’s short story “Pantaloon in Black,” cannot be understood. This may be of some interest to Faulkner specialists. But the fact that he cannot be understood has ramifications, because “Pantaloon in Black,” seems to be the anomaly of the book Go Down, Moses, which is either a collection of stories or a novel, depending on the success one has in integrating “Pantaloon in Black” into (...) it. If Rider cannot be understood, then Go Down, Moses has an enigma at the center of its mysteries, around which it cannot be made to cohere.More important to nonspecialists is the question of why Rider cannot be understood, and, consequently, why Go Down, Moses disintegrates. To answer this I want to perform the logical operation modus tollens on Stanley Fish’s idea that interpretations are produced by interpretive communities: if interpretations fail, then it must be because interpretive communities fail. Of course, Fish everywhere argues that interpretations must always, on the contrary, succeed; the lesson of Is There a Text in This Class? is that interpretive communities produce texts inexorably and inevitably in their own image. But Fish’s idea of an interpretive community is something like the Modern Language Association, or the set of all English professors, or the Yale school—bigger or smaller machines perfectly programmed for producing texts out of theoretical presuppositions. What is, however, even English professors are members of communities that fit the definition of an interpretive community, by virtue of the fact that they speak through our readings, but which are not chiefly engaged in the manufacture of masterful criticism? Worse: what if these communities speak a different language from those to which we professionally belong? Worse yet: what is they are disintegrating even as the MLA, or the Yale school, endures, or prevails?The point is not that Fish is wrong; it is that he has oversimplified his sense of a text by reducing it to the instrument of communication used by professor speaking to other professors. But in “Pantaloon in Black,” Faulkner has formed a text in the image of a Southern Negro and invited us to join an interpretive community on the model of Yoknapatawpha County. Insofar as we take up that invitation, we fail to understand his story; insofar as we reject it, we also fail to understand his story. The paradox is the result of our being forced to join a community which does not cohere; to the degree that that community fails to cohere, so does our reading. What Faulkner says to Fish is that the American belief in the power of interpretive communities is akin to an idealist’s dream of an integrated South. John Limon is assistant professor of English at Williams College. He is currently working on a book, Half-Sight of Science, on the history of the American novel in relation to the history of science and science philosophy. (shrink)

Parte prima. Profili speculativi -- Parte seconda. Profili sociali, politici, giuridici -- Parte terza. Profili antropologici.

Author: Sawicki Jerzy Title: THELEOGICAL PRINCIPLE IN KANT’S METHODOLOGY (Zasada teleologiczna w metodologii Kanta) Source: Filo-Sofija year: 2005, vol:.5, number: 2005/1, pages: 281-292 Keywords: KANT, THELEOGICAL PRINCIPLE, FINALISM, MECHANICISM Discipline: PHILOSOPHY Language: POLISH Document type: ARTICLE Publication order reference (Primary author’s office address): E-mail: www:The work contains a concise of I. Kant’s views on the problem of the laws of nature and the theleological principle presented in this context, which Kant proposes in the character of a regulative methodological postulate. (...) The analysis of fundamental philosophical notions (the law of nature, necessity, causality, purpose) carried out from the position of an extreme aprioristic rationalism leads Kant to the conclusion about the basic impossibility of educing the conception of purpose (in relation to nature) from aprioristic transcendental laws, ie. such laws which the theoretical reason imposes to the nature by necessity. However, the fact of a total functioning of an organism does not fit, according to Kant, into the frames of a mechanically understood causality. Kant tries to solve this problem choosing the way of conclusion by analogy and finally he suggests to introduce into the living nature a specific causal relation in which the purposes constitute a particular kind of causes and results at the same time. That conception oscillates between mechanicism and theological finalism, and the fitting of a science system into the frames of aprioristic categories does not permit a finally decide about the supremacy of one or the other way of seeing the world. However, nevertheless, the perceiving and stressing of the peculiarity of organic symptoms, the formulation of the postulate about their unreductability to the law of a mechanical type constitute unquestionable and great merit of the author of the Criticism of the Judgment Authority. The idea of the totality of organism, though involved in subjective idealistic non consequences of Kant’s conceptions has in the given historical period all features of a deep and progressive thought, outpacing and inspiring several later research ideas, both in philosophy and in natural science. (shrink)