Polynat in PER models

Polynat in PER models

The polymorphic lambda-calculus can be modelled using PERs on a partial combinatory algebra. We say that the type of natural numbers (polynat) is polymorphically standard in such a model if the interpretation of the type only contains (the interpretations of) the Church numerals. We show that this is not always the case by constructing an explicit counterexample. On the other hand, when the PCA...

Performance-based Pricing Models in Online Advertising: Cost per Click versus Cost per Action

The multibillion-dollar online advertising industry continues to debate whether to use the CPC (cost per click) or CPA (cost per action) model as an industry standard. This article applies the economic framework of incentive contracts to study the trade-o s of these pricing models. In some conditions, the CPA model leads to higher publisher (or advertiser) payo s than the CPC model. Whether pub...

on some bayesian statistical models in actuarial science with emphasis on claim count

چکیده ندارد.

Fully Complete Minimal PER Models for theSimply Typed - al ulus ?

- IIIB . 13 - 1 - PER model - Semantic data models developing

The paper treats the developing of the semantic data models. On this basis the place and the function of PER model (processes, entity, relations) are traced.