1,721,066 research outputs found
Growing Clustering Algorithms in Market Segmentation: Defining Target Groups and Related Marketing Communication
No full textDecker R, Scholz S, Wagner R. Growing Clustering Algorithms in Market Segmentation: Defining Target Groups and Related Marketing Communication. In: Zani S, Cerioli A, Riani M, Vichi M, eds. Data Analysis, Classification and the Forward Search. Studies in classification, data analysis and knowledge organization. Heidelberg: Springer; 2006: 23-30
Robust Time Series Analysis Through the Forward search
No full textIn this paper we show how the forward search, free from masking and swamping problems, can detect masked multiple outliers in time series and their effect on the model fitted to the data
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Multidimensional assessment of outcome in psychiatry: The use of graphical displays. The South-Verona Project 2
No full textIn psychiatry, the assessment of outcome, to be relevant for clinical practice, should be multidimensional. This demands suitable statistical tools both to represent and to analyse the complex relationships between variables. This paper aims to provide guidelines for selecting graphical displays of multidimensional data that enable better capturing of the relationships between variables and summarize information available for individual cases as well as for groups of patients. Muitivariate graphical techniques such as Chemoff faces, stars, parallel co-ordinates and Andrews plots are applied to a set of data drawn from the South Verona Outcome Project, a naturalistic stud based on a multidimensional model for the assessment of outcomes, routinely conducted at the Institute of Psychiatry of the University of Verona, Italy. The assessment includes global/unetioning, pschopathoiog, social disability, subjective quality of life, and satisfaction with services, number of service contacts and days of hospitalisation. The selected sequence of graphical displays allows a quick understanding of the multivariate data set not otherwise obtainable with numerical indexes and specifically enabled us to: (a) picture the characteristics of the data set on each single variable; (b) identify relationships between two or more variables; (c) identify peculiarities of individual patients and of group of patients. In psychiatry and in other areas of medicine a graphical approach to multidimensional data is a useful analytical tool for increasing the impact of outcome studies, in everyday clinical practice and in monitoring and evaluating of services
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