This document defines a deterministic digital signature generation procedure. Such signatures are compatible with standard Digital Signature Algorithm (DSA) and Elliptic Curve Digital Signature Algorithm (ECDSA) digital signatures and can be processed with unmodified verifiers, which need not be aware of the procedure described therein. Deterministic signatures retain the cryptographic security...

This paper describes the participation of the iRiS team from University of Pittsburgh in the TREC Clinical Decision Support (CDS) track in 2016. According to the track requirements, 1,000 most relevant biomedical articles from the PubMed Collection were retrieved based on information needs of 30 patients with their electronic health records (EHR) notes. Our approach focuses on using MetaMap to ...

Subliminal channels in randomized signature algorithms like the DSA are well-known. However, much less seems to be known about this issue when dealing with deterministic schemes. Using some known signature schemes like ESIGN-D and SFLASH as example, we illustrate the problem of subliminal channels in non-interactive deterministic signature algorithms. Based on an appropriate formalization, a de...

Wireless spectrum is becoming a vital and scarce resource due to the increase development and deployment of mobile device and their associated applications. Dynamic Spectrum Access (DSA) represents one of the few ways that our nation can be able cope with our anticipated spectrum crisis1. Wireless communications is a key tool in today’s economy and efficient use of this spectrum is paramount. I...

In this study, we report on the results of studies in which two randomized groups of students are monitored while they solved exercises in a Data Structures and Algorithms (DSA) course. The first group did the exercises on the web and the second one in the classroom sessions. A web based system was employed that was able to give feedback and automatically assess the exercises. The research ques...

In order to opportunistically exploit unused radio spectrum nodes of dynamic spectrum access (DSA) networks monitor the spectrum around them. Such cognitive radios can greatly benefit from a spatial characterization of spectrum use. However, there is need to find an efficient way to describe spatial use, something which has not been studied in details so far. In this paper, we introduce spatial...

Modern 5G networks offer a large space for innovation and a completely new approach to addressing network functioning. A fixed spectrum assignment policy is a significant limitation of today’s wireless communication network practice and is to be replaced by a completely new approach called dynamic spectrum access (DSA). However, there is no general agreement on the organization of the DSA. Some...

With the advances of cognitive radio technologies, Dynamic Spectrum Access (DSA) has received increasing attention. For dynamic spectrum access, a good spectrum assignment algorithm often considers the spectrum demands of different devices and assigns contiguous and variable bandwidth to them. However, if the DSA devices at a location belong to two or more entities, a selfish entity may want to...

Correlated defaults and systemic risk are clearly priced in credit portfolio securities such as CDOs or index CDSs. In this paper we study an extensive CDX data set for evidence whether correlated defaults are also present in the underlying CDS market. We develop a cash flow based top-down approach for modeling CDSs from which we can derive the following major contributions: (I) Correlated defa...

Support Vector Machine (SVM) is an effective model for many classification problems. However, SVM needs the solution of a quadratic program which require specialized code. In addition, SVM has many parameters, which affects the performance of SVM classi?er. Recently, the Generalized Eigenvalue Proximal SVM (GEPSVM) has been presented to solve the SVM complexity. In real world applications data ...