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Investigation of comorbidity relations plays crucial role in patients’ stratification and risk analysis. Having a huge dataset of electronic health records of hypertensive outpatients from Federal Almazov North-West Medical Centre, we propose a hierarchical modeling scheme and present our initial results. At each level of disease hierarchy (including time domain), we consider different problems; from...
While it is important to investigate the negative effects of decoherence on the performance of quantum information processors, Landauer was one of the first to point out that an equally basic problem, i.e., the effects of unavoidable hardware flaws in the real-world implementations of quantum gates, needs to be investigated as well. Following Landauer’s suggestion, we investigated the structural stability...
In contrast to comparing faces via single exemplars, matching sets of face images increases robustness and discrimination performance. Recent image set matching approaches typically measure similarities between subspaces or manifolds, while representing faces in a rigid and holistic manner. Such representations are easily affected by variations in terms of alignment, illumination, pose and expression...
In traditional networks, a single malicious (“Byzantine”) packet switch can cause global disruption; for instance, by giving incorrect routing information, flooding the network with traffic, or forwarding data incorrectly. Previous work (which we'll call NPBR for “Network Protocols with Byzantine Robustness”) presented a network design resilient to Byzantine...
In this paper we present an empirical analysis of complex networks in the command and control system. Here we study a kind of C3I system and its two improved models. Using the software Pajek, we get the degree, the degree-distribution, the shortest path length, the clustering coefficient, the betweenness centrality and the clustering coefficient-degree relations of the networks. We find that the C...
This paper presents a Bidirectional Hierarchy-based Any cast Routing (BHAR) protocol for collecting data over multi-hop wireless sensor networks (WSNs). The BHAR protocol improves on existing HAR mechanisms to speed up the process of constructing hierarchical trees and repairing routes, and as a result to prolong network lifetime. Different from HAR, BHAR allows sinks and sources to initialize the...
The complexity of e-commerce logistics is mainly reflected by its diversity and multi-objectives of different domains which the logistics involved in. In this paper, we give a special object-oriented Petri net's definition composed by Unique Set, Service Net and Data Set, then use it to model a typical e-commerce logistics. Firstly, we analyze the process' requirements in order to abstract four objects...
In this paper a multilayer hierarchical visual processing architecture integrated with a bottom-up and top-down combined inference algorithm is proposed for robust weld joint recognition and localization. Three layers-pixel layer, primitive layer, and profile layer-are defined, firstly laser stripe centerline points are coarsely extracted from the image in pixel layer, then the primitive layer primitives...
Sparse representation theory has been increasingly used in the fields of signal processing and machine learning. The standard sparse models are not invariant to spatial transformations such as image rotations, and the representation is very sensitive even under small such distortions. Most studies addressing this problem proposed algorithms which either use transformed data as part of the training...
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