message: Small bug fix visualize.
diff: @@ -266,7 +266,7 @@ def GenerateTableHtml(items, keys_to_print, display_index=True):
  # print tensor.keys()
  for h, mapper in keys_to_print:
  val = tensor[h] if h in tensor else None
  - val = tensor[h] if mapper is None else mapper(val)
  + val = val if mapper is None else mapper(val)
  html += "<td>%s</td>\n"%val
  html += "</tr>\n"
  