{
  "id": 7569,
  "title": "Understanding the classification criteria",
  "url": "/competitions/galaxy-zoo-the-galaxy-challenge/discussion/7569",
  "author_name": "Beck Chen",
  "post_date": "2014-04-01T05:32:47.657000",
  "votes": 0,
  "comment_count": 0,
  "views": 1323,
  "content": "<p>Hi, I am having some difficulties understanding the classification criteria. I followed the instructions of Galaxy Zoo and tried to classify some images in the training set by myself, but sometime I got very different answers.</p>\n<p>For example, the following three pictures seem very similar to me, but they have very different classification results&nbsp;for question 1:</p>\n<p>100187: [0.448521, 0.551479, 0]</p>\n<p><img src=\"https://ewtq2g.dm2304.livefilestore.com/y2p5nZ8RH3lGuZ6R-5hcgPepcpUdYaftrkxh6lMCWeMovhsJlKZjdED43uEs9H1z7jH1Sqq6d8cc-hgtTkokfwuaF5Ttdr9vnMbuYrCk5AEmAE/100187.jpg?psid=1\" alt width=\"424\" height=\"424\"></p>\n<p>100259: [0.338597, 0.661403, 0]</p>\n<p><img src=\"https://ei8z8q.dm1.livefilestore.com/y2phcZy-vypyJaLyipVqQOPl8zkXaAtckasjIz6zCYyT8R9GtSWJccLlbTCWAKuNREXRpsrE94AD3vSTDQVvo_YlWugdATMIaB2xG_SSpuNozQ/100259.jpg?psid=1\" alt width=\"424\" height=\"424\"></p>\n<p>100288: [0.64558, 0.308559, 0.045861]</p>\n<p><img src=\"https://ei8z8q.dm2303.livefilestore.com/y2pV75bu1HXSIiIBce_IIKHk2FO3uLX5GlVDr53gR6S_5l4uf1f7qT7jy7qsq5tmkLAD4cw_1GbbjQ5YVrjLrI3WCGcY427BINETEjGFlDEnwo/100288.jpg?psid=1\" alt width=\"424\" height=\"424\"></p>\n<p>In my opinion, they are all disks and should belong to class 1.2.&nbsp;Am I wrong or are the citizen scientists not very well-trained? Could anyone explain this to me? Thanks.</p>",
  "messages": [
    {
      "id": 41291,
      "postDate": "2014-04-01T05:32:47.657Z",
      "content": "<p>Hi, I am having some difficulties understanding the classification criteria. I followed the instructions of Galaxy Zoo and tried to classify some images in the training set by myself, but sometime I got very different answers.</p>\n<p>For example, the following three pictures seem very similar to me, but they have very different classification results&nbsp;for question 1:</p>\n<p>100187: [0.448521, 0.551479, 0]</p>\n<p><img src=\"https://ewtq2g.dm2304.livefilestore.com/y2p5nZ8RH3lGuZ6R-5hcgPepcpUdYaftrkxh6lMCWeMovhsJlKZjdED43uEs9H1z7jH1Sqq6d8cc-hgtTkokfwuaF5Ttdr9vnMbuYrCk5AEmAE/100187.jpg?psid=1\" alt width=\"424\" height=\"424\"></p>\n<p>100259: [0.338597, 0.661403, 0]</p>\n<p><img src=\"https://ei8z8q.dm1.livefilestore.com/y2phcZy-vypyJaLyipVqQOPl8zkXaAtckasjIz6zCYyT8R9GtSWJccLlbTCWAKuNREXRpsrE94AD3vSTDQVvo_YlWugdATMIaB2xG_SSpuNozQ/100259.jpg?psid=1\" alt width=\"424\" height=\"424\"></p>\n<p>100288: [0.64558, 0.308559, 0.045861]</p>\n<p><img src=\"https://ei8z8q.dm2303.livefilestore.com/y2pV75bu1HXSIiIBce_IIKHk2FO3uLX5GlVDr53gR6S_5l4uf1f7qT7jy7qsq5tmkLAD4cw_1GbbjQ5YVrjLrI3WCGcY427BINETEjGFlDEnwo/100288.jpg?psid=1\" alt width=\"424\" height=\"424\"></p>\n<p>In my opinion, they are all disks and should belong to class 1.2.&nbsp;Am I wrong or are the citizen scientists not very well-trained? Could anyone explain this to me? Thanks.</p>"
    }
  ],
  "comments": [],
  "raw_markdown_by_id": {
    "41291": ""
  }
}