PWL #61: Backpropagation applied to handwritten zip code recognition

Papers We Love @ Seattle
Papers We Love @ Seattle
Public group

Every 1st Thursday of the month

999 3rd Ave

999 3rd Ave · Seattle, WA

How to find us

Floor 33, space is called Create33, we should have someone to help guide you up.

Location image of event venue


• What we'll do
Main Event: Zachary New will present Backpropagation applied to handwritten zip code recognition (

The ability of learning networks to generalize can be greatly enhanced by providing constraints from the task domain. This paper demonstrates how such constraints can be integrated into a backpropagation network through the architecture of the network. This approach has been successfully applied to the recognition of handwritten zip code digits provided by the U.S. Postal Service. A single network learns the entire recognition operation, going from the normalized image of the character to the final classification.

• Important to know

Big ups to Create33 and Vanessa for hosting this month!

As a chapter of Papers We Love we abide by and enforce the PWL Code of Conduct ( at our events. Please give it a read, plan on acting like an adult, and involve one of the organizers if you need help.

Stop slacking and join us in the #seattle channel at!

If you have a paper you'd like to present, or even just a mini, please hit up one of the organizers :) We're always looking for more presenters.