169,257 research outputs found
The emergence of French statistics. How mathematics entered the world of statistics in France during the 1920s
This paper concerns the emergence of modern mathematical statistics in France
after the First World War. Emile Borel's achievements are presented, and
especially his creation of two institutions where mathematical statistics was
developed: the {\it Statistical Institute of Paris University}, (ISUP) in 1922
and above all the {\it Henri Poincar\'e Institute} (IHP) in 1928. At the IHP, a
new journal {\it Annales de l'Institut Henri Poincar\'e} was created in 1931.
We discuss the first papers in that journal dealing with mathematical
statistics
Measuring trade in value added in the new industrial economy: statistical implications
Vertical integration of production processes at international level and the resulting fragmentation of the value chains increasingly question the relevance of traditional trade indicators. Intermediate productions are increasingly offshored within these global value chains, giving place to what is known as "trade in tasks". The paper presents some experiences of alternative measures of international trade in terms of the value added generated by this process. The strength with which the concept of value added has imposed itself as the yardstick for the measurement of international trade has very fruitful analytical implications in the context of national accounts. A second part shows how the international statistical system has responded to the obvious risk of obsolescence by launching a series of joint initiatives in order to adapt all the instruments of the statisticianâs âtool-boxâ: classifications, balance of payments and national accounts manuals. Conclusions highlight the remaining challenges, as well as the divergences that persist among the groups of experts in relation to the proposed reforms and their normative and practical impacts.vertical integration; trade in tasks; national accounts
Is there life beyond the ISI journals lists? the international impact of Spanish, Italian, French and German economics journals
This comparative study looks at the international impact of leading economics journals published in Spain, Italy, France and Germany. It also aims to establish whether they play a similar role in any of these 4 countries. For this purpose data were collected on the number of times that articles published in these journals are cited in international journals on the ISI Journals lists. The study focused on the number and characteristics of the citations received during the period 1996-2004 by articles published between 1995 and 1999 in a limited number of Spanish, Italian, French and German journals. The international impact of the Spanish journals was found to be similar in size and characteristics to that of the Italian publications. However, it differed sharply from the impact of the highest-ranking French and German journals. These last received a higher volume of citations, some of which also showed very different qualitative characteristics
Loop-free Markov chains as determinantal point processes
We show that any loop-free Markov chain on a discrete space can be viewed as
a determinantal point process. As an application, we prove central limit
theorems for the number of particles in a window for renewal processes and
Markov renewal processes with Bernoulli noise.Comment: Published in at http://dx.doi.org/10.1214/07-AIHP115 the Annales de
l'Institut Henri Poincar\'e - Probabilit\'es et Statistiques
(http://www.imstat.org/aihp/) by the Institute of Mathematical Statistics
(http://www.imstat.org
Gestion Interne de Données Statistiques
Les bases de donnees statistiques sont pratiquement toutes gerees par des systemes congus sur mesure.
Cela vient de ce que les SGBD conventionneis, destines essentiellement aux applications de gestion, ne
conviennent pas aux bases statistiques. C'est avant tout en ce qui concerne le stockage des donnees, la
gestion interne de la base, que les problemes poses et done les solutions À apporter sont differents. Les
bases statistiques necessitent en particulier des structures de fichier speciales, permettant des lectures
rapides de tres nombreuses donnees ainsi que des compactages specifiques. Cet article estune synthese
critique des organisations internes proposees pour les bases de donnees statistiques. Des propositions
nouvelles sont egalement decrites
The quenched invariance principle for random walks in random environments admitting a bounded cycle representation
We derive a quenched invariance principle for random walks in random
environments whose transition probabilities are defined in terms of weighted
cycles of bounded length. To this end, we adapt the proof for random walks
among random conductances by Sidoravicius and Sznitman (Probab. Theory Related
Fields 129 (2004) 219--244) to the non-reversible setting.Comment: Published in at http://dx.doi.org/10.1214/07-AIHP122 the Annales de
l'Institut Henri Poincar\'e - Probabilit\'es et Statistiques
(http://www.imstat.org/aihp/) by the Institute of Mathematical Statistics
(http://www.imstat.org
Empirical processes for recurrent and transient random walks in random scenery
In this paper, we are interested in the asymptotic behaviour of the sequence
of processes with \begin{equation*}
W_n(s,t):=\sum_{k=1}^{\lfloor nt\rfloor}\big(1_{\{\xi_{S_k}\leq s\}}-s\big)
\end{equation*} where is a sequence of independent
random variables uniformly distributed on and
is a random walk evolving in , independent of the 's. In
Wendler (2016), the case where is a recurrent random
walk in such that converges in
distribution to a stable distribution of index , with ,
has been investigated. Here, we consider the cases where is either: a) a transient random walk in , b) a recurrent
random walk in such that
converges in distribution to a stable distribution of index
- âŠ