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_build | ||
site/ |
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mkdocs gh-deploy |
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# cms-open-data-guide | ||
MkDocs documentation for the open data guide |
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# About | ||
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This guide points you to places | ||
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## Contributors | ||
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## Contact |
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# QCD Estimation | ||
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!!! Warning | ||
This page is under construction |
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# Techniques | ||
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!!! Warning | ||
This page is under construction |
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# Collision Data | ||
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!!! Warning | ||
This page is under construction | ||
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The CMS collision data is organized in primary datasets (PD). | ||
All CMS open data primary datasets can be found with [this search](http://opendata.cern.ch/search?page=1&size=20&type=Dataset&subtype=Collision&experiment=CMS>). | ||
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The dataset name consists of three parts separated by "/", e.g.: | ||
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```/TauPlusX/Run2011A-12Oct2013-v1/AOD``` | ||
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The first part indicates the primary dataset contents (```TauPlusX```), the second part is the data-taking era (```Run2011A```) and reprocessing (```12Oct2013```), and the last one indicates the data format (```AOD```). | ||
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## Dataset contents | ||
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The primary dataset definition is centered around physics objects (SingleMu, Jet, Tau etc). | ||
Events triggered by High Level Triggers (HLT) with a similar physics contents or use | ||
are mostly directed in the same PD. [This guide](http://opendata.cern.ch/docs/cms-guide-trigger-system) | ||
gives an overview of the CMS trigger system. | ||
Besides requirements on the physics content, the organisation of the primary | ||
datasets has to satisfy constraints related to the data processing and handling, | ||
such as the average event rate approximately uniform across the | ||
different PDs, and the event rate more than 10 Hz and less than 200 Hz. (relevant?) | ||
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Each CMS collision dataset comes with a brief description of the contents, and | ||
the full listing of all possible HLT trigger streams included in the dataset. | ||
The instructions how to find the exact definitions and parameters of the | ||
HLT trigger definitions can be found in | ||
[Guide to the CMS Trigger System](http://opendata.cern.ch/docs/cms-guide-trigger-system) under "*HLT Trigger Path definitions*". | ||
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Since a given event can pass more than one HLT path, it | ||
can be included in more than one primary dataset. | ||
There's an overall overlap between the PDs of around 25-35% during Run1 and | ||
it must be taken into account when combining events from different datasets in an analysis. | ||
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## Data taking and reprocessing | ||
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One year of data taking is divided in several "eras" indicated as RunA, RunB, etc. | ||
According to the CMS data policy, 50% of data is published after the embargo period, | ||
completed with the full release within 10 years. Currently available are | ||
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* Run2010A and Run2010B | ||
* Run2011A | ||
* Run2012B and Run2012C | ||
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The data are reprocessed several times, and it is the last complete reprocessing available at the time of the release which is made public. | ||
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## Data format | ||
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The data format in use for Run1 data is Analysis Object Data (AOD). | ||
A brief description of data formats can be found in the introductory | ||
[About CMS](http://opendata.cern.ch/docs/about-cms) under "*Primary and simulated datasets*". | ||
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## Else (FIXME) | ||
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To consider: | ||
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- mention json files for validated runs/LS | ||
- mention condition data and GT | ||
- Integrated luminosity here or in a separate chapter? | ||
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Refs | ||
G. Franzoni: Dataset definition for CMS operations and physics analyses | ||
https://cds.cern.ch/record/1976679/files/CR2014_311.pdf | ||
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# Event Generation | ||
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!!! Warning | ||
This page is under construction |
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# Monte Carlo Simulations | ||
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!!! Warning | ||
This page is under construction | ||
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A set of simulated data (Monte Carlo - MC) corresponding to the collision data | ||
is made available. All directly available MC datasets can be found with | ||
[this search](http://opendata.cern.ch/search?page=1&size=20&type=Dataset&subtype=Simulated&experiment=CMS). | ||
Furthermore, large amount of MC, thought to be of less frequent use, is available on demand | ||
and included in [search results](http://opendata.cern.ch/search?page=1&size=20&type=Dataset&experiment=CMS&subtype=Simulated&ondemand=True) | ||
if "*include on-demand datasets*" option is selected. | ||
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MC dataset are searchable by [categories](http://opendata.cern.ch/docs/simulated-dataset-categories), | ||
which can be found under "Filter by category" on the left bar of the search page. | ||
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The dataset name consists of three parts separated by ```/``` e.g.: | ||
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```/DYToMuMu_M-15To50_Tune4C_8TeV-pythia8/Summer12_DR53X-PU_S10_START53_V19-v1/AODSIM``` | ||
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The first part indicates the simulated physics process (```DYToMuMu```), | ||
some of the production parameters (```M-15To50_Tune4C```), collision energy (```8TeV```), | ||
and the event generator used in the processing chain. [CMS simulated datasets names](http://opendata.cern.ch/docs/cms-simulated-dataset-names) | ||
gives more details in the naming. | ||
The second part is the production campaign (```Summer12_DR53X```), [pile-up](http://opendata.cern.ch/docs/cms-guide-pileup-simulation) | ||
profile (```PU_S10```) and processing [conditions](http://opendata.cern.ch/docs/cms-guide-for-condition-database) (```START53_V19```), | ||
and the last one indicates the data format (```AODSIM```). | ||
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## Dataset contents | ||
~~~~~~~~~~~~~~~~ | ||
The dataset naming reflects the contents of the dataset, and the actual generator parameters | ||
with which the dataset contents have been defined can be | ||
found as explained under "*Finding the generator parameters*" in the | ||
[CMS Monte Carlo production overview](http://opendata.cern.ch/docs/cms-mc-production-overview). | ||
## Processing | ||
[CMS Monte Carlo production overview](http://opendata.cern.ch/docs/cms-mc-production-overview) | ||
briefly describes the steps in the MC production chain. | ||
## Data format | ||
The data format in use for Run1 MC data is Analysis Object Data (AODSIM). | ||
A brief description of data formats can be found in the | ||
introductory [About CMS](http://opendata.cern.ch/docs/about-cms) under "*Primary and simulated datasets*". |
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#foreach file(luminosity.md ) | ||
foreach dir(backgrounds datasim interpretation selection systematics) | ||
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mkdir $dir | ||
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end | ||
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foreach file(backgrounds/qcdestimation.md backgrounds/techniques.md datasim/collisiondata.md datasim/eventgeneration.md datasim/mcsimulations.md interpretation/limits.md interpretation/stats.md selection/objectid.md selection/objects.md selection/triggers.md systematics/lumiuncertain.md systematics/mcuncertain.md systematics/objectsuncertain.md systematics/pileupuncertain.md) | ||
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echo $file | ||
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echo "# " $file > $file | ||
echo '\!\!\! Warning' >> $file | ||
echo " This page is under construction" >> $file | ||
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end | ||
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# Upper-limit calculations | ||
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!!! Warning | ||
This page is under construction |
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# Statistics | ||
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!!! Warning | ||
This page is under construction |
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# Luminosity | ||
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!!! Warning | ||
This page is under construction | ||
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## Sub-heading |
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# Object ID | ||
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!!! Warning | ||
This page is under construction |
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# Objects | ||
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!!! Warning | ||
This page is under construction |
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# Triggers | ||
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!!! Warning | ||
This page is under construction |
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# Luminosity Uncertainty | ||
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!!! Warning | ||
This page is under construction |
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# MC Uncertainty | ||
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!!! Warning | ||
This page is under construction |
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# Object Uncertainty | ||
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!!! Warning | ||
This page is under construction |
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# Pileup Uncertainty | ||
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!!! Warning | ||
This page is under construction |
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# Analyzers | ||
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!!! Warning | ||
This page is under construction |
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# Configure | ||
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!!! Warning | ||
This page is under construction |
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# Data Analysis | ||
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!!! Warning | ||
This page is under construction |
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# Data Model | ||
!!! Warning | ||
This page is under construction |
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# Frontier | ||
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!!! Warning | ||
This page is under construction |
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# Overview | ||
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!!! Warning | ||
This page is under construction |
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# FAQ | ||
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Frequently Asked Questions and other problems and issues | ||
that have come up. | ||
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***Possible subsections below*** | ||
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## High-level questions | ||
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#### **Why would I choose VirtualBox over docker? Why would I choose docker over VirtualBox?** | ||
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Great question! Anyone? | ||
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## Docker | ||
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#### **Docker downloads container but never launches environment** | ||
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This is an issue with newer OSs on your local laptop/desktop running older OSs in the container. | ||
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For example, suppose you are following the [Running CMS analysis code using Docker](http://opendata.cern.ch/docs/cms-guide-docker) | ||
tutorial. If you run | ||
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```bash | ||
docker run --name opendata -it cmsopendata/cmssw_5_3_32 /bin/bash | ||
``` | ||
and the container downloads but you don't find yourself in the ```CMSSW_5_3_32``` environment, then... | ||
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## Data | ||
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## CMSSW | ||
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# CMS Open Data Guide | ||
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All you want to know! | ||
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[CERN Open Data Portal](http://opendata.cern.ch/) | ||
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## How to use this site | ||
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# The CERN Open Data Portal | ||
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!!! Warning | ||
This page is under construction | ||
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# CMS Open Data | ||
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!!! Warning | ||
This page is under construction | ||
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# The CMS Twiki | ||
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!!! Warning | ||
This page is under construction | ||
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# C++ and python | ||
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!!! Warning | ||
This page is under construction | ||
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# Docker | ||
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!!! Warning | ||
This page is under construction |
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# Git | ||
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!!! Warning | ||
This page is under construction | ||
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Here are some helpful links to learn how to use git. |
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# ROOT | ||
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!!! Warning | ||
This page is under construction | ||
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From [ROOT's webpage](https://root.cern.ch) | ||
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*A modular scientific software toolkit. | ||
It provides all the functionalities needed to deal with big data processing, | ||
statistical analysis, visualisation and storage. | ||
It is mainly written in C++ but integrated with other languages such as Python and R.* | ||
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It is the primary toolkit for many experimental analysis and while you are | ||
free to analyze these datasets however you like, some familiarity with | ||
ROOT will serve you well when accessing the data. | ||
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* Many ROOT examples can be found [here](https://root.cern/doc/master/group__Tutorials.html>). | ||
If you don't know where to start, we would recommend | ||
* Example 1 | ||
* Example 2 | ||
* Example 3 | ||
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* Python has become the language of choice for many analysts and most of the examples | ||
you'll see make use of the PyROOT module, callable from python. You can go through | ||
a number of the examples [here](https://root.cern.ch/doc/master/group__tutorial__pyroot.html). | ||
If you don't know where to start, we would recommend | ||
* Example 1 | ||
* Example 2 | ||
* Example 3 | ||
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# Virtual machines | ||
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!!! Warning | ||
This page is under construction | ||
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Oops, something went wrong.