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Aspects of Robust Statistics are important in many areas. Based on
the International Conference on Robust Statistics 2001 (ICORS 2001)
in Vorau, Austria, this volume discusses future directions of the
discipline, bringing together leading scientists, experienced
researchers and practitioners, as well as younger researchers. The
papers cover a multitude of different aspects of Robust Statistics.
For instance, the fundamental problem of data summary (weights of
evidence) is considered and its robustness properties are studied.
Further theoretical subjects include e.g.: robust methods for
skewness, time series, longitudinal data, multivariate methods, and
tests. Some papers deal with computational aspects and algorithms.
Finally, the aspects of application and programming tools complete
the volume.
Aspects of Robust Statistics are important in many areas. Based on
the International Conference on Robust Statistics 2001 (ICORS 2001)
in Vorau, Austria, this volume discusses future directions of the
discipline, bringing together leading scientists, experienced
researchers and practitioners, as well as younger researchers. The
papers cover a multitude of different aspects of Robust Statistics.
For instance, the fundamental problem of data summary (weights of
evidence) is considered and its robustness properties are studied.
Further theoretical subjects include e.g.: robust methods for
skewness, time series, longitudinal data, multivariate methods, and
tests. Some papers deal with computational aspects and algorithms.
Finally, the aspects of application and programming tools complete
the volume.
This book assembles papers which were presented at the biennial
sympo sium in Computational Statistics held und er the a uspices of
the International Association for Statistical Computing (IASC), a
section of ISI, the Interna tional Statistical Institute. This
symposium named COMPSTAT '94 was organized by the Statistical
Institutes of the University of Vienna and the University of
Technology of Vienna, Austria. The series of COMPSTAT Symposia
started 1974 in Vienna. Mean while they took place every other year
in Berlin (Germany, 1976), Leiden (The Netherlands, 1978),
Edinburgh (Great Britain, 1980), Toulouse (France, 1982), Prague
(Czechoslovakia, 1984), Rom (Italy, 1986), Copenhagen (Den mark,
1988), Dubrovnik (Yugoslavia, 1990) and Neuchatel (Switzerland,
1992). This year we are celebrating the 20th anniversary in Vienna,
Austria. It has obviously been observed a movement from
"traditional" computa tional statistics with emphasis on methods
which produce results quickly and reliably, to computationally
intensive methods like resampling procedures, Bayesian methods,
dynamic graphics, to very recent areas like neural net works,
accentuation on spatial statistics, huge data sets, analysis
strategies, etc. For the organization of the symposium, new
guidelines worked out by the IASC in written form were in effect
this time. The goal was to refresh somehow the spirit of the start
of COMPSTAT '74, keep the tradition of the series and ensure a
certain continuity in the sequence of biannual meetings."
Geostatistik ist ein relativ neuer Zweig der Statistik, der sich
mit der Anwendung von statistischen Methoden in den
Geowissenschaften besch.!lftigt. Quantitative Analysen dieser Art
werden aber auch in sehr modernen Disziplinen wie Umweltschutz,
Raumplanung, etc. gebraucht. Man sollte deshalb vielleicht besser
das Stichwort "Statistische Analysen von r.!lumlich- abh.!lngigen
Daten" verwenden. Der Gegenstand "Geostatistik" ist unmittelbar mit
dem Namen G. Matheron, dem Statistiker aus Fontainebleau in
Frankreich verbunden. Er legte vor fast 20 Jahren das Fundament fUr
diesen Wissenschaftszweig. Ein theoretische Standardwerk in
Buchform erschien 1978 von Journel und Huijbregts, das allerdings
fUr Anwender manchmal nicht so einfach zu lesen ist. Die
vorliegende Schrift entstand nach intensivem Studium des oben
erw.!lhnten Buches, dem sichtlich viele Ideen und Beispiele
entnommen sind. Sie diente auch als Unterlage einer mehrj.!lhrigen
Vorlesung Uber "Mathematische Methoden in der Montangeologie" an
der Montanuniversit.!lt Leoben. Auf tiefgreifende theoretische
Behandlungen wurde weitgehend verzichtet, dem Leser sollen eher
einige sinnvolle Anwendungen kurz n.!lher gebracht und
WeiterfUhrendes durch Literaturhinweise erg.!lnzt werden. Wichtige
Anregungen fUr den Text kamen auch aus verschie- denen
unver8ffentlichten Skripten wie das von Prof. H. Siemes aus
Aaachen, A.G. Royle aus Leeds und J.-M. Rendu aus Johannesburg.
Eingeleitet wurde die Arbeit jedoch durch die Erm8glichung der
Abhaltung der Vorlesung in Leoben, fUr die ich besonders den
Professoren Ch. Schmidt und W. Imrich danke. Viel Motivation und
Anregung erhielt ich durch die Diskussionen mit R. Sinding-Larson
und H. Omre aus Norwegen sowie mit D. Francois-Bongarcon aus
Fontainebleau.
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