Filters








289,352 Hits in 4.2 sec

Staged trees and asymmetry-labeled DAGs [article]

Gherardo Varando, Federico Carli, Manuele Leonelli
2021 arXiv   pre-print
Furthermore, we define a new labeled graph, termed asymmetry-labeled directed acyclic graph, whose edges are labeled to denote the type of dependence existing between any two random variables.  ...  Here we formalize the relationship between these two models and introduce a minimal Bayesian network representation of the staged tree, which can be used to read conditional independences in an intuitive  ...  Formally, let G be the DAG of a BN and E its edge set. Let 'partial', 'context/partial', 'local', ' total'} be the set of edge labels marking the type of dependence. L A = {'context', Definition 7.  ... 
arXiv:2108.01994v1 fatcat:k42wrgqze5hm7o34lbwxbslfte

Characterizing functional dependencies in formal concept analysis with pattern structures

Jaume Baixeries, Mehdi Kaytoue, Amedeo Napoli
2014 Annals of Mathematics and Artificial Intelligence  
Considering the discovery of functional dependencies, it is indeed known that a relation can be expressed as the binary relation of a formal context, whose implications are equivalent to those dependencies  ...  However, this leads to a new data representation that is quadratic in the number of objects w.r.t. the original data.  ...  For applying the FCA machinery, a manyvalued context can be transformed into a formal context with a conceptual scaling.  ... 
doi:10.1007/s10472-014-9400-3 fatcat:ckesjrsxe5fc5cvek5x35zondy

Multiplication of Distributions and Nonperturbative Calculations of Transition Probabilities [article]

J. Aragona, P. Catuogno, J.F. Colombeau, S.O. Juriaans, C. Olivera
2018 arXiv   pre-print
In a mathematical context in which one can multiply distributions the "'formal"' nonperturbative canonical Hamiltonian formalism in Quantum Field Theory makes sense mathematically, which can be understood  ...  A novelty appears when one starts to compute the transition probabilities.  ...  One of the authors (JFC) is very much indebted to Raymond Stora for help and discussions in the years 1976-1977, which were at the origin of his work on multiplication of distributions and of the contents  ... 
arXiv:1801.03527v1 fatcat:m6zxed7m7nfzzjy7b47lw5eyk4

A connection between partial symmetry and inverse procedural modeling

Martin Bokeloh, Michael Wand, Hans-Peter Seidel
2010 ACM Transactions on Graphics  
We systematically collect such editing operations and analyze their dependency to build a shape grammar.  ...  (b) Symmetric regions are marked in red. (c) A set of symmetric curves that cuts the model into two pieces yields a docking site that corresponds to (d) a replacement operation.  ...  Acknowledgements The authors would like to thank Alexander Berner, Qi-Xing Huang, Matthias Hullin, and Leonidas Guibas for useful discussions, and Gerd Wolf for creating many of our example models.  ... 
doi:10.1145/1778765.1778841 fatcat:qeccgajgurgrhgsnxufk5jp3fa

A connection between partial symmetry and inverse procedural modeling

Martin Bokeloh, Michael Wand, Hans-Peter Seidel
2010 ACM SIGGRAPH 2010 papers on - SIGGRAPH '10  
We systematically collect such editing operations and analyze their dependency to build a shape grammar.  ...  (b) Symmetric regions are marked in red. (c) A set of symmetric curves that cuts the model into two pieces yields a docking site that corresponds to (d) a replacement operation.  ...  Acknowledgements The authors would like to thank Alexander Berner, Qi-Xing Huang, Matthias Hullin, and Leonidas Guibas for useful discussions, and Gerd Wolf for creating many of our example models.  ... 
doi:10.1145/1833349.1778841 fatcat:ma6tlkrcozd2rl6zww5xv62npe

A connection between partial symmetry and inverse procedural modeling

Martin Bokeloh, Michael Wand, Hans-Peter Seidel
2010 ACM Transactions on Graphics  
We systematically collect such editing operations and analyze their dependency to build a shape grammar.  ...  (b) Symmetric regions are marked in red. (c) A set of symmetric curves that cuts the model into two pieces yields a docking site that corresponds to (d) a replacement operation.  ...  Acknowledgements The authors would like to thank Alexander Berner, Qi-Xing Huang, Matthias Hullin, and Leonidas Guibas for useful discussions, and Gerd Wolf for creating many of our example models.  ... 
doi:10.1145/1833351.1778841 fatcat:csehgpy5bzf3lky6a76ok53s4y

Page 6205 of Mathematical Reviews Vol. , Issue 91K [page]

1991 Mathematical Reviews  
Summary: “For time-independent fields differences between the classical Lagrangian and Hamiltonian formalisms vanish.  ...  ) Remark on the paper: “Configuration dependent pressure potentials” [J.  ... 

Should Symmetric Quantum Mechanics Be Interpreted as Nonlinear?

Miloslav Znojil
2002 Journal of Nonlinear Mathematical Physics  
The resulting "effective" Hamiltonians H(eff) are always Hermitian, and the two alternative forms of their energy-dependence are interpreted as a certain dynamical nonlinearity, responsible for the repulsion  ...  The Feshbach-type reduction of the Hilbert space to the physically most relevant "model" subspace is suggested as a means of a formal unification of the standard quantum mechanics with its recently proposed  ...  A 104 8004.  ... 
doi:10.2991/jnmp.2002.9.s2.11 fatcat:i7z3pugmlrdvfkyvtd6pqi3d6y

Supersymmetry without hermiticity within symmetric quantum mechanics

Miloslav Znojil, Francesco Cannata, Bijan Bagchi, Rajkumar Roychoudhury
2000 Physics Letters B  
A new model of supersymmetry between bosons and fermions is proposed.  ...  The formalism admits vanishing Witten index.  ...  Still, even in this context many formal questions remain open.  ... 
doi:10.1016/s0370-2693(00)00569-4 fatcat:b2jydqzlcnd6pnwamkyxfc5qje

The creation of social and intellectual capital in virtual communities of practice: shaping social structure in virtual communities of practice

Iwan Von Wartburg, Katja Rost, Thorsten Teichert
2006 International Journal of Learning and Change  
CoPs are said to be a more effective organizational form for knowledge creation than traditional and formal ways of structuring interaction.  ...  CoPs are said to be a more effective organizational form for knowledge creation than traditional and formal ways of structuring interaction.  ...  As a result, we plead for a context dependent mix of weak and strong ties in VCoPs.  ... 
doi:10.1504/ijlc.2006.010972 fatcat:jfctm4gftzbehdr4xrdu2jdxee

Cooperation between research and practice for the development of innovations in an educational design project

Janika Grunau, Bernd Gössling
2020 Educational design research (EDeR)  
For this purpose, we draw on a DBR project as an example, wherein the European model of validation was adapted to the field of geriatric care in Germany.  ...  However, we additionally critically examine how cooperation between research and practice can be managed and ignite innovation that over time may have a transformative effect on practices often taken for  ...  Cooperation often has a multifaceted nature, displaying symmetrical and asymmetrical characteristics simultaneously. Cooperation may create new dependencies.  ... 
doi:10.15460/eder.4.1.1513 fatcat:bvjdhzeu4vghdagprotaxrdiwu

Selection Using Non-symmetric Context Areas [chapter]

Diane Lingrand, Stéphane Lavirotte, Jean-Yves Tigli
2005 Lecture Notes in Computer Science  
Using this extension, we exhibit three different modes of selection and demonstrate their differences on a mobile applications: the museum visit.  ...  This paper targets with applications running on mobile devices and using context informations.  ...  We exhibit an example where these definitions of context and context area are not satisfying. We then propose a new formalism to define context and context area.  ... 
doi:10.1007/11575863_40 fatcat:hay42p4be5dhdfwombgdwppxvy

Page 5260 of Mathematical Reviews Vol. , Issue 97H [page]

1997 Mathematical Reviews  
To this pur- pose, a vierbein-type formalism is developed, and it is shown that in general the symmetric sector is also not static.  ...  He attempts to involve the massive term in the spherically symmetric case at least in linear approximation. The author works in a first-order Lagrangian formalism with A = 0.  ... 

Hybrid dynamical type theories for navigation [article]

Paul Gustafson, Jared Culbertson, Daniel E. Koditschek
2021 arXiv   pre-print
controller synthesis from formal task specifications.  ...  This type theory combines the framework of Fu--Kishida--Selinger for constructing linear dependent type theories from state-parameter fibrations with previous work on categories of hybrid systems under  ...  One approach to resolving this contradiction is to have two separate contexts-one for linear data, and one for intuitionistic data-and prescribe how types are allowed to depend on linear terms.  ... 
arXiv:2108.07625v1 fatcat:ggnyks357ncvjj5exgp5btiqza

Page 4718 of Mathematical Reviews Vol. , Issue 84k [page]

1984 Mathematical Reviews  
The events in these structures are formally derived from symmetric bilateral restrictions.  ...  by a formal theory, say Peano arithmetic.  ... 
« Previous Showing results 1 — 15 out of 289,352 results