In this paper we consider structural comparison of sequences, that is, to compare sequences not by their content but by their structure. We focus on the case where this structure can be defined by a tree and propose a new tree distance metric that capture structural similarity. This metric satisfies nonnegativity, identity, symmetry and the triangle inequality. We give algorithms to compute thi...

Several learning tasks comprise hierarchies. Comparison with a ”goldstandard” is often performed to evaluate the quality of a learned hierarchy. We assembled various similarity metrics that have been proposed in different disciplines and compared them in a unified interdisciplinary framework for hierarchical evaluation which is based on the distinction of three fundamental dimensions. Identifyi...

Reducing respiratory motion artifacts in fast 2D dynamic contrast enhanced MRI in liver using structural similarity E.G.W. ter Voert, L. Heijmen, C.J.A. Punt, J.H.W. de Wilt, H.W.M. van Laarhoven, and A. Heerschap Radiology, Radboud University Medical Centre, Nijmegen, Gelderland, Netherlands, Medical Oncology, Radboud University Medical Centre, Nijmegen, Gelderland, Netherlands, Medical Oncolo...

In this paper, we start by providing an overview of the measurement of quality of image. There are various objective methods which can measure the quality of the image. In this we are providing an idea which can measure the error between the actual image and reference image. And can calculate the quality of image. Keywords— Error Sensitivity Function, Perceptual Quality, Image Quality, Structur...

When a potential hedge between alternatives does not reduce the exposure to uncertainty, we say that the decision maker considers these alternatives structurally similar. We offer a novel approach and suggest that structural similarity is subjective and should be different across decision makers. Structural similarity can be recovered through a property of the individual’s preferences referred ...

People tend to egocentrically focus on how adverse or beneficial conditions in competitions affect the self, while inadequately considering the comparable impact on opponents. This leads to overoptimism for a victory in easy tasks and underoptimism in hard tasks. Four experiments investigated whether experience and performance feedback in a multi-round competition would influence egocentric wei...

This article analyzes the role played in the credit crisis of the processes by which different groups of market participants produce knowledge about financial instruments. Employing documentary sources and a set of 76 predominantly oralhistory interviews, the article presents a historical sociology of the clusters of evaluation practices surrounding ABSs (asset-backed securities) and CDOs (coll...

This paper presents a novel approach to determine structural similarity as guidance for adaptation in case based reasoning Cbr We advance structural similarity assessment which provides not only a single numeric value but the most speci c structure two cases have in common inclusive of the modi cation rules needed to obtain this structure from the two cases Our approach treats retrieval matchin...

Plenty of approaches to stabilize chained nonholonomic systems have been proposed in the literature. However, the stabilization with constrained inputs is seldom addressed. This problem has practical importance since all physical nonholonomic systems have actuator limitations. In this article, a novel switching control design is proposed. The design strategy is inspired by the structural simila...

We propose a technique for measuring the structural similarity of semistructured documents based on entropy. After extracting the structural information from two documents we use either Ziv-Lempel encoding or Ziv-Merhav crossparsing to determine the entropy and consequently the similarity between the documents. To the best of our knowledge, this is the first true linear-time approach for evalua...