Filters








341,258 Hits in 3.4 sec

Comment on "Non-contextual hidden variables and physical measurements" [article]

Adan Cabello
1999 arXiv   pre-print
are performed or not, or even if these measurements can be achieved only with finite precision.  ...  Kent's conclusion that "non-contextual hidden variable theories cannot be excluded by theoretical arguments of the Kochen-Specker type once the imprecision in real world experiments is taken into account  ...  This subset is dense in the set of yes-no questions and admits an assignation of "yes" or "no" answers compatible with the sum rule [2] .  ... 
arXiv:quant-ph/9911024v1 fatcat:xja4enwgjzde3fnkwyo6yvyify

State Space Model with hidden variables for reconstruction of gene regulatory networks

Xi Wu, Peng Li, Nan Wang, Ping Gong, Edward J Perkins, Youping Deng, Chaoyang Zhang
2011 BMC Systems Biology  
Results: Our results show that inference precision varied with the number of hidden variables.  ...  Conclusion: This study provides useful information in handling the hidden variables and improving the inference precision.  ...  The result obtained from a larger network with 50 genes also shows that SSM with a fixed number of hidden variables (here m = 2) gives a better or compatible precision than DBN.  ... 
doi:10.1186/1752-0509-5-s3-s3 pmid:22784622 pmcid:PMC3287571 fatcat:x2ohm63qurd2ljd52vqudgq5mi

The space of compatible full conditionals is a unimodular toric variety [article]

Aleksandra B Slavkovic, Seth Sullivant
2004 arXiv   pre-print
The set of all m-tuples of compatible full conditional distributions on discrete random variables is an algebraic set whose defining ideal is a unimodular toric ideal.  ...  Our algebraic characterization provides a natural generalization of the requirement that compatible conditionals have identical odds ratios and holds regardless of the patterns of zeros in the conditional  ...  We give precise defining relations for the space of compatible conditionals which generalize the condition that odds ratios of consistent conditionals should be the same.  ... 
arXiv:math/0405046v1 fatcat:7ikm4qdp7fhlzhes6s72v3wfuq

Error optimization of a three-dimensional magnetic resonance imaging tagging-based cartilage deformation technique

C. P. Neu, M. L. Hull, J. H. Walton
2005 Magnetic Resonance in Medicine  
Error (strain bias and precision) was determined using direct experiments and Monte Carlo simulations for four variables: spatial resolution, tag line spacing, applied nominal strain, and number of control  ...  The important results include the following: (1) bias was not significantly different from zero, (2) precision increased with image resolution and with tag line spacing, (3) precision was independent of  ...  Thus, the objective of this study was to determine the values of the experimental variables that minimize the error of the CDTR technique using a custom MRI-compatible phantom.  ... 
doi:10.1002/mrm.20669 pmid:16200566 fatcat:3evznlmtsfeadmilqjyuwnepsu

The space of compatible full conditionals is a unimodular toric variety

Aleksandra B. Slavkovic, Seth Sullivant
2006 Journal of symbolic computation  
The set of all m-tuples of compatible full conditional distributions on discrete random variables is an algebraic set whose defining ideal is a unimodular toric ideal.  ...  Our algebraic characterization provides a natural generalization of the requirement that compatible conditionals have identical odds ratios and holds regardless of the patterns of zeros in the conditional  ...  We give precise defining relations for the space of compatible conditionals which generalize the condition that odds ratios of consistent conditionals should be the same.  ... 
doi:10.1016/j.jsc.2005.04.006 fatcat:egxnas6xsrbpxib7hkg32xc3zi

The introduction of a new robot for assistance in ophthalmic surgery

M. A. Nasseri, M. Eder, S. Nair, E. C. Dean, M. Maier, D. Zapp, C. P. Lohmann, A. Knoll
2013 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)  
The compatibility of the robotic system with a real world surgical setup was evaluated and confirmed in this work.  ...  robot enables variable RCM in 3D space.  ...  robot enables variable RCM in 3D space.  ... 
doi:10.1109/embc.2013.6610840 pmid:24111027 dblp:conf/embc/NasseriENDMZLK13 fatcat:4hrpsrxzmfci7lmnkmhvv3w56a

Simulating quantum mechanics by non-contextual hidden variables

R. Clifton, A. Kent
2000 Proceedings of the Royal Society A  
No physical measurement can be performed with infinite precision. This leaves a loophole in the standard no-go arguments against non-contextual hidden variables.  ...  We show here by explicit construction that there are indeed such non-contextual hidden variable models, both for projection valued and positive operator valued measurements.  ...  there can be more members of {A i } than the dimension, n, of the space, and the POs in a resolution of the identity need not be mutually compatible.  ... 
doi:10.1098/rspa.2000.0604 fatcat:33otle2n4zhtvasfhmqr24o2ua

Support and Plausibility Degrees in Generalized Functional Models [article]

Paul-Andre Monney
2013 arXiv   pre-print
Unlike traditional functional models, generalized functional models do not require that there is only one value of the parameter variable that is compatible with an observation and a realization of the  ...  A generalized functional model is a pair (f, P) where f is a function describing the interactions between a parameter variable, an observation variable and a random source, and P is a probability distribution  ...  The sample space of w is 0 = {OJ 1 02} where OJ means that the red coin ShOWS heads up and o2 that it shows tails up. By analogy, we define the sample space 0' = { o�, o2} of the random variable w'.  ... 
arXiv:1302.1562v1 fatcat:3cdk6i42hbai5ivw22wnzxnpmm

Bell Inequalities as Constraints on Unmeasurable Correlations

Costantino Budroni, Giovanni Morchio
2012 Foundations of physics  
Such extensions are compatible with QM predictions in many cases, in particular for observables with compatibility relations described by tree graphs.  ...  In all the cases, the dependence of an unmeasurable correlation on a set of variables allowing for a classical representation is the only basis for arguments about violations of locality and causality.  ...  The restriction to yes/no variables is not substantial if, as in QM, compatibility extends from generic observables to yes/no observables defined by compatible observables (in QM, spectral projections)  ... 
doi:10.1007/s10701-012-9625-0 fatcat:ywbm5yp4ibgwlabohgo7upkmla

The positive edge pricing rule for the dual simplex

Jérémy Omer, Mehdi Towhidi, François Soumis
2015 Computers & Operations Research  
The dual positive edge rule can be used to modify any pivot selection rule so as to prioritize compatible variables.  ...  We analyze dual degeneracy to characterize a particular set of dual compatible variables such that if any of them is selected to leave the basis the pivot will be nondegenerate.  ...  The following proposition states more precisely the relationship between the number of dual degenerate and dual compatible variables. Proof.  ... 
doi:10.1016/j.cor.2015.03.009 fatcat:anto3axlxnel5eqbnxf4c4fcya

Distribution of amplitude in an extended phase space of a generic quantum system [article]

C. Lopez
2015 arXiv   pre-print
A formulation of Quantum Mechanics in an extended phase space is proposed in order to restore the action reaction principle. All predictions of the standard theory are reproduced.  ...  In a theory with additional variables in an extended phase space, elementary states of the quantum system should be described by joint precise values of non commuting magnitudes, because maximal families  ...  The two slit experiment and the phase space of spin variables have been formulated in the extended phase space.  ... 
arXiv:1507.07720v1 fatcat:e3myaydqynh43a7mnmhucamxdq

Mirroring 'meaningful' actions: Sensorimotor learning modulates imitation of goal-directed actions

Caroline Catmur, Cecilia Heyes
2018 Quarterly Journal of Experimental Psychology  
One reason for the lack of research on goaldirected actions is that imitation of such actions is commonly confounded with the tendency to respond in a spatially compatible manner.  ...  Experiment 1 demonstrated that imitation of goal-directed grasping can be measured while controlling for spatial compatibility, and Experiment 2 showed that this imitation effect can be modulated by sensorimotor  ...  task space and a precision grip in the upper part of task space.  ... 
doi:10.1080/17470218.2017.1344257 pmid:28627281 fatcat:i62ilzhcn5chjfdcykm23kbqom

Semiparametric Estimation of a Noise Model with Quantization Errors [article]

Sébastien Li-Thiao-Té
2009 arXiv   pre-print
The detectors in mass spectrometers are precise enough to count ion events.  ...  When t > 1 however, we introduce compatible lattices and derive an estimator for t that is optimal, independent of N and enables subsequent analyses of the ion counts.  ...  Fig. 7 7 Fourier transform of the quasi-periodic signal, in Fourier space (left) and period space (right). The vertical line shows the upper bound from Proposition 9.  ... 
arXiv:0906.0346v1 fatcat:4zfz46xvdzc33lvekvf6ebuvfe

Representation of Linear Operators by Gabor Multipliers [chapter]

Peter C. Gibson, Michael P. Lamoureux, Gary F. Margrave
2012 Excursions in Harmonic Analysis, Volume 2  
These questions are answered completely for a special class of "compatible" window pairs.  ...  We consider a continuous version of Gabor multipliers: operators consisting of a short-time Fourier transform, followed by multiplication by a distribution on phase space (called the Gabor symbol), followed  ...  Indeed, since it is sometimes useful to make this distinction between space and frequency, we reserve ξ and η for frequency variables, using other letters (such as x,y,τ,t,v,w) for spacial variables.  ... 
doi:10.1007/978-0-8176-8379-5_12 fatcat:fg76qflnenb45gmo7vgoxzkb4u

Conflicting Multi-Objective Compatible Optimization Control [chapter]

Lihong Xu, Qingsong Hu, Haigen Hu, Erik Goodm
2010 New Achievements in Evolutionary Computation  
Multi-objective compatible control strategy with a precise model In this section, we propose a two-layer MOCC framework suitable for a problem with a precise model.  ...  Next we describe what is meant by a compatible control framework. If the model is precise, the two-layer compatible control framework is as shown in Figure 1 .  ...  /books/new-achievements-in-evolutionarycomputation/conflicting-multi-objective-compatible-optimization-control  ... 
doi:10.5772/8050 fatcat:4h434ics3vep7idu2ng7cuknz4
« Previous Showing results 1 — 15 out of 341,258 results