Log in or Sign up
Coin Talk
Home
Forums
>
Coin Forums
>
US Coins Forum
>
Need a collection of photos of Lincoln Cents for a Neural Network
>
Reply to Thread
Message:
<p>[QUOTE="messydesk, post: 3913298, member: 1765"]If I were doing this, I would consider the experiment a success if I could use only circulated coins, same number for each grade I wanted to learn, train on one photo of each from a single source, and show that the accuracy is significantly better than a dartboard approach. I would then show the effect of using photos from a different source as my test data. Then train with data from multiple sources and show the effect on convergence and accuracy. On a system trained to grade Barber quarters, I'd additionally try to test with Barber halves, Barber dimes, and Liberty nickels, to show how portable the trained network is across similar types. If the network isn't totally confounded by those, then try Mercury dimes and Buffalo nickels. After all, when we're grading circulated coinage of types we're not familiar with, we need to estimate the amount of detail remaining.</p><p><br /></p><p>Uncirculated coinage is a different monster, and I would present just why it is.[/QUOTE]</p><p><br /></p>
[QUOTE="messydesk, post: 3913298, member: 1765"]If I were doing this, I would consider the experiment a success if I could use only circulated coins, same number for each grade I wanted to learn, train on one photo of each from a single source, and show that the accuracy is significantly better than a dartboard approach. I would then show the effect of using photos from a different source as my test data. Then train with data from multiple sources and show the effect on convergence and accuracy. On a system trained to grade Barber quarters, I'd additionally try to test with Barber halves, Barber dimes, and Liberty nickels, to show how portable the trained network is across similar types. If the network isn't totally confounded by those, then try Mercury dimes and Buffalo nickels. After all, when we're grading circulated coinage of types we're not familiar with, we need to estimate the amount of detail remaining. Uncirculated coinage is a different monster, and I would present just why it is.[/QUOTE]
Your name or email address:
Do you already have an account?
No, create an account now.
Yes, my password is:
Forgot your password?
Stay logged in
Coin Talk
Home
Forums
>
Coin Forums
>
US Coins Forum
>
Need a collection of photos of Lincoln Cents for a Neural Network
>
Home
Home
Quick Links
Search Forums
Recent Activity
Recent Posts
Forums
Forums
Quick Links
Search Forums
Recent Posts
Competitions
Competitions
Quick Links
Competition Index
Rules, Terms & Conditions
Gallery
Gallery
Quick Links
Search Media
New Media
Showcase
Showcase
Quick Links
Search Items
Most Active Members
New Items
Directory
Directory
Quick Links
Directory Home
New Listings
Members
Members
Quick Links
Notable Members
Current Visitors
Recent Activity
New Profile Posts
Sponsors
Menu
Search
Search titles only
Posted by Member:
Separate names with a comma.
Newer Than:
Search this thread only
Search this forum only
Display results as threads
Useful Searches
Recent Posts
More...