1.

Record Nr.

UNINA9910453551803321

Autore

Das Subrata Kumar

Titolo

Foundations of decision-making agents [[electronic resource] ] : logic, probability and modality / / Subrata Das

Pubbl/distr/stampa

Singapore ; ; Hackensack, NJ, : World Scientific

[London], : Imperial College Press, c2008

ISBN

1-281-93816-5

9786611938161

981-277-984-1

Descrizione fisica

1 online resource (385 p.)

Disciplina

006.33

Soggetti

Intelligent agents (Computer software)

Artificial intelligence - Computer programs

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Bibliographic Level Mode of Issuance: Monograph

Nota di bibliografia

Includes bibliographical references (p. 347-353) and index.

Nota di contenuto

ch. 1. Modeling agent epistemic states: an informal overview. 1.1. Models of agent epistemic states. 1.2. Propositional epistemic model. 1.3. Probabilistic epistemic model. 1.4. Possible world epistemic model. 1.5. Comparisons of models. 1.6. P3 model for decision-making agents -- ch. 2. Mathematical preliminaries. 2.1. Usage of symbols. 2.2. Sets, relations, and functions. 2.3. Graphs and trees. 2.4. Probability. 2.5. Algorithmic complexity -- ch. 3. Classical logics for the propositional epistemic model. 3.1. Propositional logic. 3.2. First-order logic. 3.3. Theorem proving procedure. 3.4. Resolution theorem proving. 3.5. Refutation procedure. 3.6. Complexity analysis -- ch. 4. Logic programming. 4.1. The concept. 4.2. Program clauses and goals. 4.3. Program semantics. 4.4. Definite programs. 4.5. Normal programs. 4.6. Prolog. 4.7. Prolog systems. 4.8. Complexity analysis -- ch. 5. Logical rules for making decisions. 5.1. Evolution of rules. 5.2. Bayesian probability theory for handling uncertainty. 5.3. Dempster-Shafer theory for handling uncertainty. 5.4. Measuring consensus. 5.5. Combining sources of varying confidence. 5.6. Advantages and disadvantages of rule-based systems -- ch. 6. Bayesian belief



networks. 6.1. Bayesian belief networks. 6.2. Conditional independence in belief networks. 6.3. Evidence, belief, and likelihood. 6.4. Prior probabilities in networks without evidence. 6.5. Belief revision. 6.6. Evidence propagation in polytrees. 6.7. Evidence propagation in directed acyclic graphs. 6.8. Complexity of inference algorithms. 6.9. Acquisition of probabilities. 6.10. Advantages and disadvantages of belief networks. 6.11. Belief network tools -- ch. 7. Influence diagrams for making decisions. 7.1. Expected utility theory and decision trees. 7.2. Influence diagrams. 7.3. Inferencing in influence diagrams. 7.4. Compilation of influence diagrams. 7.5. Inferencing in strong junction tress -- ch. 8. Modal logics for the possible world epistemic model. 8.1. Historical development of modal logics. 8.2. Systems of modal logic. 8.3. Deductions in modal systems. 8.4. Modality. 8.5. Decidability and matrix method. 8.6. Relationships among modal systems. 8.7. Possible world semantics. 8.8. Soundness and completeness results. 8.9. Complexity and decidability of modal systems. 8.10. Modal first-order logics. 8.11. Resolution in modal first-order logics. 8.12. Modal epistemic logics. 8.13. Logic of agents beliefs (LAB) -- ch. 9. Symbolic argumentation for decision-making. 9.1. Toulmin's model of argumentation. 9.2. Domino decision-making model for P3. 9.3. Knowledge representation syntax of P3. 9.4. Formalization of P3 via LAB. 9.5. Aggregation via Dempster-Shafer theory. 9.6. Aggregation via Bayesian belief networks.

Sommario/riassunto

This self-contained book provides three fundamental and generic approaches (logical, probabilistic, and modal) to representing and reasoning with agent epistemic states, specifically in the context of decision making. Each of these approaches can be applied to the construction of intelligent software agents for making decisions, thereby creating computational foundations for decision-making agents. In addition, the book introduces a formal integration of the three approaches into a single unified approach that combines the advantages of all the approaches. Finally, the symbolic argumentation approach to decision making developed in this book, combining logic and probability, offers several advantages over the traditional approach to decision making which is based on simple rule-based expert systems or expected utility theory.



2.

Record Nr.

UNINA9910697169003321

Autore

Eckhardt David A

Titolo

Geophysical logs of selected wells at the Diaz Chemical Superfund Site in the Village of Holley, New York, 2009 [[electronic resource] /] / by David A.V. Eckhardt and J. Alton Anderson ; prepared in cooperation with the U.S. Environmental Protection Agency

Pubbl/distr/stampa

Reston, Va. : , : U.S. Dept. of the Interior, U.S. Geological Survey, , 2010

Descrizione fisica

1 online resource (iii, 15 pages) : color illustrations

Collana

Data series ; ; 500

Altri autori (Persone)

AndersonJ. Alton

Soggetti

Geophysics - New York (State) - Holley

Volatile organic compounds - New York (State) - Holley

Groundwater - Pollution - New York (State) - Holley

Borings - New York (State) - Holley

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Title from PDF title screen (USGS, viewed June 18, 2010).

Nota di bibliografia

Includes bibliographical references.



3.

Record Nr.

UNINA9910132106003321

Autore

Mucchielli Laurent

Titolo

Les causes du suicide : pathologie individuelle ou sociale? Durkheim, Halbwachs et les psychiatres de leur temps (1830-1930) / / Laurent Mucchielli, Marc Renneville

Pubbl/distr/stampa

Chicoutimi : , : J.-M. Tremblay, , 2006

ISBN

1-55441-924-7

Descrizione fisica

1 online resource (57 pages)

Collana

Classiques des sciences sociales

Disciplina

362.281

Soggetti

Suicide - Sociological aspects

Lingua di pubblicazione

Francese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di bibliografia

Includes bibliographical references.

Nota di contenuto

Résumé  -- Introduction  -- I.       Durkheim, lecteur des théories psychiatriques  -- 1.   La critique de l'approche médicale du suicide par Durkheim -- 2.   Retour sur le débat médical -- 3.   Les biais de Durkheim  -- II.     Le modèle durkheimien d'explication du suicide  -- 1.   Le rejet de l'analyse des motifs présumés de suicides -- 2.   L'individu comme condition et non cause du fait social -- 3.   Le tournant du Suicide : la causalité univoque du rapport individu-société -- 4.   Une fascination d'époque pour l'influence des phénomènes inconscients -- 5.   La typologie des suicides : un artifice ?  -- III.    L'individuel et le collectif : la solution d'Halbwachs  -- 1.   Les motifs et les causes : deux points de vue complémentaires pour analyser un seul et même type de suicide -- 2.   D'un déterminisme à l'autre : la causalité psychique simple -- 3.   Une réfutation empirique de la centralité des cas de psychopathologie -- 4.   De la statistique aux situations de vie : la sociologie compréhensive d'Halbwachs  -- Conclusion -- Bibliographie.

Sommario/riassunto

Cet article interroge le rapport individu/société ainsi que le modèle de causalité psychique conçus par Durkheim dans le Suicide, et les met en perspective historique au regard d'une part de l'état des interprétations l'ayant précédé, d'autre part de la relecture critique opérée par Halbwachs en 1930. Nous revenons d'abord en détail sur la façon dont Durkheim écarte les thèses psychiatriques qui, selon lui, expliquent un fait social par des pathologies individuelles. Nous montrons ensuite



que la construction durkheimienne implique le rejet de l'analyse des motifs individuels pour les remplacer par une autre interprétation psychologique fondée sur l'existence de mécanismes inconscients socialement déterminés. Au passage, nous soulignons que cette construction théorique rencontre quelques difficultés dans la confrontation avec les données empiriques de l'époque, et qu'elle amène en définitive à s'interroger sur le bien fondé de la typologie durkheimienne des suicides. Enfin, nous examinons la façon dont, plus de trente ans après, Halbwachs parvient largement à résoudre ces difficultés en abandonnant les postulats théoriques que Durkheim avait placés au coeur de l'analyse sociologique.