README.md

metadata

license: cc-by-4.0

Dataset Card for Top Quark Tagging

Table of Contents

• Dataset Card for Top Quark Tagging
  • Table of Contents
  • Dataset Description
    • Dataset Summary
    • Supported Tasks and Leaderboards
  • Dataset Structure
    • Data Instances
    • Data Fields
    • Data Splits
    • Licensing Information
    • Citation Information
    • Contributions

Dataset Description

• Homepage: https://zenodo.org/record/2603256
• Paper: https://arxiv.org/abs/1902.09914
• Point of Contact: Gregor Kasieczka

Dataset Summary

Top Quark Tagging is a dataset of Monte Carlo simulated events produced by proton-proton collisions at the Large Hadron Collider. The top-quark signal and mixed quark-gluon background jets are produced with Pythia8 with its default tune for a center-of-mass energy of 14 TeV. Multiple interactions and pile-up are ignored. The leading 200 jet constituent four-momenta $(E,p_x,p_y,p_z)(E,\; p\_x,\; p\_y,\; p\_z)$ are stored, with zero-padding applied to jets with fewer than 200 constituents.

Supported Tasks and Leaderboards

• tabular-classification: The dataset can be used to train a model for tabular binary classification, which consists in predicting whether an event is produced from a top signal or quark-gluon background. Success on this task is typically measured by achieving a high accuracy and AUC score.

Dataset Structure

Data Instances

Each instance in the dataset consists of the four-momenta of the leading 200 jet constituents, sorted by $p_{T}p\_T$. For jets with fewer than 200 constituents, zero-padding is applied. The four-momenta of the top-quark are also provided, along with a label in the is_signal_new column to indicate whether the event stems from a top-quark (1) or QCD background (0). An example instance looks as follows:

{'E_0': 474.0711364746094,
 'PX_0': -250.34703063964844,
 'PY_0': -223.65196228027344,
 'PZ_0': -334.73809814453125,
  ...
 'E_199': 0.0,
 'PX_199': 0.0,
 'PY_199': 0.0,
 'PZ_199': 0.0,
 'truthE': 0.0,
 'truthPX': 0.0,
 'truthPY': 0.0,
 'truthPZ': 0.0,
 'ttv': 0,
 'is_signal_new': 0}

Data Fields

The fields in the dataset have the following meaning:

• E_i: the energy of jet constituent $ii$.
• PX_i: the $xx$ component of the jet constituent's momentum
• PY_i: the $yy$ component of the jet constituent's momentum
• PZ_i: the $zz$ component of the jet constituent's momentum
• truthE: the energy of the top-quark
• truthPX: the $xx$ component of the top quark's momentum
• truthPY: the $yy$ component of the top quark's momentum
• truthPZ: the $zz$ component of the top quark's momentum
• ttv: a flag that indicates which split (train, validation, or test) that a jet belongs to. Redundant since each split is provided as a separate dataset
• is_signal_new: the label for each jet. A 1 indicates a top-quark, while a 0 indicates QCD background.

Data Splits

	train	validation	test
Number of events	1211000	403000	404000

Licensing Information

This dataset is released under the Creative Commons Attribution 4.0 International license.

Citation Information

@dataset{kasieczka_gregor_2019_2603256,
  author       = {Kasieczka, Gregor and
                  Plehn, Tilman and
                  Thompson, Jennifer and
                  Russel, Michael},
  title        = {Top Quark Tagging Reference Dataset},
  month        = mar,
  year         = 2019,
  publisher    = {Zenodo},
  version      = {v0 (2018\_03\_27)},
  doi          = {10.5281/zenodo.2603256},
  url          = {https://doi.org/10.5281/zenodo.2603256}
}

Contributions

Thanks to @lewtun for adding this dataset.