We propose a framework for nonparametric identification and estimation of discrete choice models with unobserved sets. recover the joint distribution sets preferences from panel dataset on choices. assume that either latent are sparse or is sufficiently long. Sparsity requires number possible to be relatively small. It satisfied, instance, when nested, they form partition. Our procedure comp...

We prove that, in stochastic approach, there exists an equivalence relation between different inflationary models under some redefinition of field and time variables. The postinflationary physics is insensitive to it and one can say that related theories are in fact indistinguishable from the viewpoint of a local observer. We discuss the methodology of cosmology as a branch of natural science a...

In this paper the control of a logical discrete-event system is introduced using predicates and associated blocking events. The blocking occurs when a predicate concerning the system behaviour becomes true. It is shown that model speciications can be transformed into control objectives involving predicates and blocking events. Next, we consider the control problem when events are unobservable a...

This position paper discusses the relation of privacy, namely pseudonymity, to evidence-based trust (or rather reputation). Critical concepts of evidence-based trust/reputation systems are outlined first, followed by an introduction to the four families of the Common Criteria (for security evaluation) Privacy Class: Unobservability, Anonymity, Unlinkability, and Pseudonymity. The paper then dis...

We present in this article a differential-geometric approach to the problem of fault detection and isolation for nonlinear systems. A necessary condition for the problem to be solvable is derived in terms of an unobservability distribution, which is computable by means of suitable algorithms. The existence and regularity of such a distribution implies the existence of changes of coordinates in ...

In this paper, we analyze family labor supply in urban China using discretized neo-classical labor supply model, where we take into account the unobserved heterogeneity of each spouse and their correlation, unobservability and measurement errors of the wage rates, and the correlation of the wage and preferences. The correlation of preference between spouses is also taken into account. Elasticit...

In a normal Fermi liquid, Landau’s theory precludes the loss of single fermion, quantum coherence in the low energy/temperature limit. For highly anisotropic, strongly correlated metals there is no proof that this remains the case: we propose that quantum coherence for transport in some directions may be lost intrinsically. This should stabilize a novel, qualitatively anisotropic non-Fermi liqu...

For simplicity we will focus on a simple Gaussian Mixture Model. Consider a mixture of k spherical gaussians in R which is the following generative process. Let w ∈ ∆([k]) denote a distribution and let μ1, . . . , μk ∈ R be the mean vectors. Each point xi is generated by first choosing a component hi ∼ w and then xi ∼ N (μhi , I). We are given n samples x1, . . . , xn drawn according to this pr...

Context information is used to derive user profiles and social networks in an enterprise system called Instant Knowledge. This system requires privacy as well as conventional information security requirements. The privacy requirements include anonymity, unlinkability, unobservability and pseudonymity; these are designed to provide privacy by default to users of an Instant Knowledge service. A p...