Use of Metric Learning for the Recognition of Handwritten Digits, and its Application to Increase the Outreach of Voice-based Communication Platforms

• URL: http://arxiv.org/abs/2504.18948v1
• Date: Sat, 26 Apr 2025 15:14:47 GMT
• Title: Use of Metric Learning for the Recognition of Handwritten Digits, and its Application to Increase the Outreach of Voice-based Communication Platforms
• Authors: Devesh Pant, Dibyendu Talukder, Deepak Kumar, Rachit Pandey, Aaditeshwar Seth, Chetan Arora,
• Abstract summary: Paper-based data collection has been argued to be more appropriate in several contexts.<n>We provide a large dataset of handwritten digits, and deep learning based models and methods built using this data.<n>We demonstrate the deployment of these tools in the context of a maternal and child health awareness project in north India.
• Score: 5.316686791692299
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Initiation, monitoring, and evaluation of development programmes can involve field-based data collection about project activities. This data collection through digital devices may not always be feasible though, for reasons such as unaffordability of smartphones and tablets by field-based cadre, or shortfalls in their training and capacity building. Paper-based data collection has been argued to be more appropriate in several contexts, with automated digitization of the paper forms through OCR (Optical Character Recognition) and OMR (Optical Mark Recognition) techniques. We contribute with providing a large dataset of handwritten digits, and deep learning based models and methods built using this data, that are effective in real-world environments. We demonstrate the deployment of these tools in the context of a maternal and child health and nutrition awareness project, which uses IVR (Interactive Voice Response) systems to provide awareness information to rural women SHG (Self Help Group) members in north India. Paper forms were used to collect phone numbers of the SHG members at scale, which were digitized using the OCR tools developed by us, and used to push almost 4 million phone calls. The data, model, and code have been released in the open-source domain.

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