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Newcomers to the field are particularly encouraged. Although contact details will be required for all participants during the submission process, all entries will be presented anonymously to the evaluation panel.

Your challenge is to identify the nature of the phenomenon causing the variability in each lightcurve, whether single or binary microlensing event or variable star. For microlensing events, fit an appropriate model to the data. Analyze as much data as possible before the deadline. Contact binarycenter entries will be evaluated by a panel comprised of experts in microlensing theory and analysis, software and algorithms.

No panel member may participate in any of the teams and all panel members will be required contact binarycenter declare any conflicts of interest. It is important to note that the philosophy contact binarycenter this challenge aims to maximize innovation and problem-solving as well as participation in the field.

Accurately modeling large numbers of events in good time is of course highly important, but tackling outstanding challenges in the analysis is also valuable. For example, entries which complete a limited analysis e. Note contact binarycenter in the simulated data, the inertial frame of reference is defined with the x-axis increasing from the binary center of mass towards the less massive lens at t 0the time of closest approach to the center of mass.

The inclination of the orbit is a counter-clockwise rotation about the x-axis. Where finite source effects are significant, a linear limb darkening law has been applied.

The release will also include the surface-brightness color relation for ZW to enable lens masses to be determined where applicable. Data releases will be made through the data challenges Github organization. Github Organization A public data challenge github organization has been set-up for all entrants to use, and will be where the challenge datasets can be downloaded from. If you would like to join a team, or wish to recruit members for one, the Github organization has a project to help you make contact with other interested people: Teams are strongly encouraged to set up their contact binarycenter Teams within this Github organization, and to use its repository, wiki and issue-tracking capabilities: The first data challenge dataset are now available for download.

Entrants first need to email rstreet [at] lco. In the interests of transparency, all questions regarding the data contact binarycenter should be posted as a discussion thread to the data challenge organizer team. This then allows everyone to see the answers - after all, if its confusing you, its probably confusing someone else as well. Everyone interested in the progress of the data challenge is strongly contact binarycenter to sign up to our mailing list. In particular, this list will be contact binarycenter to announce data releases and any necessary changes.

In contact binarycenter ideal world, all entries would be compared by contact binarycenter identical set of independent and purely numerical metrics. This is difficult in practice because of a range of factors — for instance, it is impractical to expect teams to run their analysis on the same hardware and we contact binarycenter wish to limit collaboration by proscribing a fixed number of team members.

We therefore ask all teams to provide a common set of numerical metrics together with a broader description of their approach. The emphasis of the challenge is on developing novel approaches and techniques to modeling microlensing lightcurves, rather than the shear numbers of events contact binarycenter.

For example, the evaluation panel will favorably consider entries which tackle certain aspects of the modeling with a contact binarycenter approach, even if not all of the lightcurves are analyzed, or some data products are missing. A detailed description of the preferred contents of entries can be found here. The deadline for entries to the first data challenge is Oct 31, at A link to the submission portal will be provided from this data challenge website, contact binarycenter which you will be able to upload a tarball of all associated files.

The tarball should be prefixed with the lead investigator's or team name in order to distinguish it. All submissions will be judged by a panel selected for their experience in microlensing theory, statistics and software, and who did not actively participate in a submitting team. Entries will be judged quantitatively against the input parameters of the simulations, but contact binarycenter will be no ranking of entries. Entries determined to be serious contact binarycenter the discretion of the judging panel will a entitle all team members to co-authorship on a paper summarizing the results of the data challenge to be submitted to a peer reviewed journal, b imply consent for the entry's methods to be summarized and its results contact binarycenter quantitatively and qualitatively in the summary paper.

Teams will be identified with their submissions in this paper. Note, however, that we are just as interested in varying degrees contact binarycenter failure as well as success, and these will be discussed in a fair and constructive manner in the paper. Teams are contact binarycenter encouraged to publish independent papers describing their methods in detail. Data Challenge Entry Guidelines Who can participate?

What is the task? Evaluation of Entries All entries will be evaluated by a panel comprised of experts in microlensing theory and analysis, contact binarycenter and algorithms. Definitions used by the simulation Note that in the simulated contact binarycenter, the inertial frame of reference is defined with the x-axis increasing from the binary center of mass towards the less massive lens at t 0the time of closest approach to the center of mass. Contents of Entries In an ideal world, all entries would be compared by an identical set of independent and purely numerical metrics.

A detailed description of the preferred contents of entries can be found contact binarycenter Submitting your entry The deadline for entries to the first data challenge is Oct 31, at Evaluation of entries All submissions will be judged by a panel selected contact binarycenter their contact binarycenter in microlensing theory, statistics and contact binarycenter, and who did not actively participate in a submitting team.

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