Big data in practice: the example of nilearn for mining brain imaging data

International audienceThis talk will present useful patterns and lessons learned for efficientapplication of machine learning to data too big to fit in memory, in thecontext of brain imaging applications.I will discuss the design of a versatile library for mining big datasetsof brain images, nilearn, and the data patterns it relies upon,implemented in scikit-learn, for machine learning, and joblib, for dataflow. In particular, I will show how to go from general principles ofefficient data processing to a simple vocabulary that can be understoodby end users and applied to raw data. I will also discuss human factors:a big data library should be usable by end users to solve theirapplication needs. In particular this talk will cover:- out-of-core computing relying on the user's data files or disk-based cache- online and on-the-fly data reduction, to get the gist out of big data- simple chaining of operations, with caching, for a versatile processing pipeline- API-design to steer non-expert users to data-efficient code- reliable documentation through examples of a library for heavy-duty data processingThe high-level concepts introduced will be illustrated with detailedtechnical discussions of Python implementations, based both on examplesusing scikit-learn, joblib and nilearn and on an analysis of how theselibraries work. The focus here is sharing insights gained while usingand developing them, as many of the lessons are not specific to brainimaging.Links:- nilearn: https://nilearn.github.io- scikit-learn: http://scikit-learn.org/stable/- joblib: https://pythonhosted.org/joblib

Étude de la violation de symétrie CP à l'aide du canal de désintégration B0->rho0rho0 dans l'expérience BaBar

The measurement of the CP violating parameters in the b->uubard decays allow in principle to determine sin(2alpha), where alpha is one of the angle of the unitarity triangle. However, due to the presence of loop diagrams, the so-called penguin diagrams, the experimental measurement only gives information about an effective quantity of \alpha : æff. The measurements in the B->rho0rho0 decay allow to perform for the first time a full isospin analysis in the B->rhorho modes and hence to determine in principle the shift \alpha-æff induced by the penguin diagramms. The B->rho0rho0 decay was studied with the final \babar sample containing $465 10^6$ \Y4S\to\BB events collected at the PEP-II collisionner. The B->rho0rho0 branching ratio BR=0.92±0.32\±0.14 10^{-6} and the longitudinal polarization fraction fL=0.75^{+0.11}_{-0.14}±0.03 were measured. The evidence for the B->rho0rho0 signal has a significance of 3,1 \sigma including systematical uncertainties. The proper-time dependence of the longitudinal component in the decay was studied and the CP-violating coefficients S^{00}_L = 0.3\pm0.7\pm0.2, C^{00}_L = 0.2\pm0.8\pm0.2. The implication of these results on the unitarity triangle alpha was studied by performing an isospin analysis. Using the BABAR results for the B->rho+rho- and B±->rho±pi0, the 68% (90%) confidence interval on the shift in alpha induced by the penguin diagrams is |\alpha-æff|uubard permet en principe d'avoir accès à sin(2alpha), où alpha est l'un des angles du triangle d'unitarité. Cependant, la présence de diagrammes à boucle, appelées diagrammes pingouins, complique l'interprétation de la mesure expérimentale, qui ne donne en fait accès qu'à une valeur effective de \alpha : æff. Les mesures dans le canal B0->rho0rho0 permettent de réaliser pour la première fois une analyse d'isospin complète dans les modes B->rhorho, et donc en principe de déterminer le décalage \alpha-æff induit par les diagrammes pingouins. La désintégration B0->rho0rho0 a été étudiée en utilisant l'échantillon final de BABAR, soit $465 10^6$ désintégrations \Y4S\to\BB, collectées auprès du collisionneur \epem asymétrique PEP-II. Le rapport d'embranchement du mode B0->rho0rho0 a été mesuré BR=0.92±0.32±0.14 10^{-6} ainsi que la fraction de polarisation longitudinale fL= 0.75+0.11-0.14±0.03. La signifiance du signal B0->rho0rho0 est de 3.1 \sigma en prenant en compte les erreurs systématiques. La dépendance temporelle de la composante longitudinale a été étudiée et les paramètres de violation CP ont également été mesurés: S^{00}_L = 0.3±0.7±0.2, C^{00}_L = 0.2±0.8±0.2. L'implication de ces résultats sur l'angle $\alpha$ du triangle d'unitarité a été étudiée en effectuant une analyse d'isospin. En utilisant les mesures de BABAR pour les modes B->rho+rho- et B±->rho±rho0, la limite supérieure à 68% (90%) sur le décalage induit par la présence de diagrammes pingouins est donnée par: |\alpha-æff|<15.6° (<17.6°

Myocarditis during Acute Schistosomiasis in Two Travelers

We report two cases of myocarditis complicating acute schistosomiasis in returning travelers. Treatment with corticosteroids led to full recovery in both cases. Although the pathophysiology of this complication remains unclear, we recommend treating such patients with corticosteroids rather than praziquantel, which can be associated with clinical deterioration

duecredit/duecredit: 0.9.3

&lt;h4&gt; Bug Fix&lt;/h4&gt; &lt;ul&gt; &lt;li&gt;ENH: codespell &lt;a href="https://github.com/duecredit/duecredit/pull/185"&gt;#185&lt;/a&gt; (&lt;a href="https://github.com/yarikoptic"&gt;@yarikoptic&lt;/a&gt;)&lt;/li&gt; &lt;/ul&gt; &lt;h4&gt; Internal&lt;/h4&gt; &lt;ul&gt; &lt;li&gt;RF: remove remaining usage of SIX, and thus move away fully from Python 2 &lt;a href="https://github.com/duecredit/duecredit/pull/186"&gt;#186&lt;/a&gt; (&lt;a href="https://github.com/a-detiste"&gt;@a-detiste&lt;/a&gt; &lt;a href="https://github.com/yarikoptic"&gt;@yarikoptic&lt;/a&gt;)&lt;/li&gt; &lt;li&gt;Ignore &quot;vor&quot; which is now detected as typo &lt;a href="https://github.com/duecredit/duecredit/pull/186"&gt;#186&lt;/a&gt; (&lt;a href="https://github.com/yarikoptic"&gt;@yarikoptic&lt;/a&gt;)&lt;/li&gt; &lt;/ul&gt; &lt;h4&gt; Tests&lt;/h4&gt; &lt;ul&gt; &lt;li&gt;Use teardown_method instead of nose-y teardown &lt;a href="https://github.com/duecredit/duecredit/pull/190"&gt;#190&lt;/a&gt; (&lt;a href="https://github.com/yarikoptic"&gt;@yarikoptic&lt;/a&gt;)&lt;/li&gt; &lt;li&gt;Move from Travis to github workflow, disable coveralls &lt;a href="https://github.com/duecredit/duecredit/pull/187"&gt;#187&lt;/a&gt; (&lt;a href="https://github.com/yarikoptic"&gt;@yarikoptic&lt;/a&gt;)&lt;/li&gt; &lt;/ul&gt; &lt;h4&gt;Authors: 2&lt;/h4&gt; &lt;ul&gt; &lt;li&gt;Alexandre Detiste (&lt;a href="https://github.com/a-detiste"&gt;@a-detiste&lt;/a&gt;)&lt;/li&gt; &lt;li&gt;Yaroslav Halchenko (&lt;a href="https://github.com/yarikoptic"&gt;@yarikoptic&lt;/a&gt;)&lt;/li&gt; &lt;/ul&gt

duecredit/duecredit: 0.9.2

Bug Fix Tell LGTM to ignore unused imports in stub.py #179 (@jwodder) Internal Make Debian Python version PEP440 compliant #184 (@bdrung) Authors: 2 Benjamin Drung (@bdrung) John T. Wodder II (@jwodder

scikit-learn/scikit-learn: Scikit-learn 1.3.2

&lt;p&gt;We're happy to announce the 1.3.2 release.&lt;/p&gt; &lt;p&gt;You can see the changelog here: https://scikit-learn.org/stable/whats_new/v1.3.html#version-1-3-2&lt;/p&gt; &lt;p&gt;This version supports Python versions 3.8 to 3.12.&lt;/p&gt; &lt;p&gt;You can upgrade with pip as usual:&lt;/p&gt; &lt;pre&gt;&lt;code&gt;pip install -U scikit-learn &lt;/code&gt;&lt;/pre&gt; &lt;p&gt;The conda-forge builds can be installed using:&lt;/p&gt; &lt;pre&gt;&lt;code&gt;conda install -c conda-forge scikit-learn &lt;/code&gt;&lt;/pre&gt

FINDINGS OF THE IWSLT 2022 EVALUATION CAMPAIGN

The evaluation campaign of the 19th International Conference on Spoken Language Translation featured eight shared tasks: (i) Simultaneous speech translation, (ii) Offline speech translation, (iii) Speech to speech translation, (iv) Low-resource speech translation, (v) Multilingual speech translation, (vi) Dialect speech translation, (vii) Formality control for speech translation, (viii) Isometric speech translation. A total of 27 teams participated in at least one of the shared tasks. This paper details, for each shared task, the purpose of the task, the data that were released, the evaluation metrics that were applied, the submissions that were received and the results that were achieved

Software Carpentry: Version Control with Git

A half-day introduction to version control with Git and GitHub for researchers, developed and maintained by the Software Carpentry team