title: Dealing with Deep Multiple instance learning
body: <p>I am writing to inquire about the error when I utilize Deep Multiple instance learning in my image classification task.
  but I encountered an error such as the image, but I don't know how to solve it,
  Would anyone please teach me how to solve this problem? Thanks!</p>
  
  <p><a href="https://i.stack.imgur.com/gtjuT.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gtjuT.jpg" alt="enter image description here"></a></p>