Key Information

Next Deadline: Review
4d 19h until current deadline ends
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Challenge Overview


1st - $1800

Challenge Overview

We have run a Marathon challenge ( to conduct OCR using Google Vision API. We would like to see if we can further improve the test scores. 

Task Details

Please read the previous Marathon challenge statement for the background and download the training and testing sets there. 


We also provide the 1st and 2nd solutions from the Marathon challenge. One of the possible improvements could be doing an ensemble of these two solutions. The two solutions can be found in the forum of this code challenge.


We will follow the same evaluation metric in the Marathon challenge.


Final Submission Guidelines


The submission should follow the same format as the Marathon challenge. In addition, you should include the document detailing all your change logs.

Judging Criteria

Winners will be determined based on the following aspects:

  • Model Effectiveness (60%)

    • The testing score must be higher than the 1st place solution of the previous Marathon challenge.

    • The higher testing score, the better.

  • Model Feasibility (20%)

    • Your model must be easy to run, in terms of both training and testing. 

    • The inference must be able to run without a re-training.

  • Clarity of the Report (20%)

    • Please clearly document your solution and changes.

Reliability Rating and Bonus

For challenges that have a reliability bonus, the bonus depends on the reliability rating at the moment of registration for that project. A participant with no previous projects is considered to have no reliability rating, and therefore gets no bonus. Reliability bonus does not apply to Digital Run winnings. Since reliability rating is based on the past 15 projects, it can only have 15 discrete values.
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2020 Topcoder(R) Open


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