{
  "id": 185838,
  "title": "Alive cells outside the window",
  "url": "/competitions/conways-reverse-game-of-life-2020/discussion/185838",
  "author_name": "",
  "post_date": "2020-09-22T09:24:02.975333800Z",
  "votes": null,
  "comment_count": 4,
  "views": 0,
  "content": "<p>I may be wrong but it looks like the size of the simulation is bigger than 25x25 and the data we have is only a partial window of it. I didn't see mention of it so if it's written somewhere I'm sorry for that.</p>\n<p>When I apply the rules of Game of life to the starting state <em>delta</em> times I do not obtain the same result as the label. The difference is always on the edge of the grid. So i guess that there are alive cells outside of the window.<br>\nMy code is here (please tell me if it's wrong):<br>\n<a href=\"https://www.kaggle.com/wolfy73/hidden-alive-cells-evidence\" target=\"_blank\">https://www.kaggle.com/wolfy73/hidden-alive-cells-evidence</a></p>",
  "messages": [
    {
      "id": "1022041",
      "postDate": "09/22/2020 09:24:02",
      "content": "<p>I may be wrong but it looks like the size of the simulation is bigger than 25x25 and the data we have is only a partial window of it. I didn't see mention of it so if it's written somewhere I'm sorry for that.</p>\n<p>When I apply the rules of Game of life to the starting state <em>delta</em> times I do not obtain the same result as the label. The difference is always on the edge of the grid. So i guess that there are alive cells outside of the window.<br>\nMy code is here (please tell me if it's wrong):<br>\n<a href=\"https://www.kaggle.com/wolfy73/hidden-alive-cells-evidence\" target=\"_blank\">https://www.kaggle.com/wolfy73/hidden-alive-cells-evidence</a></p>",
      "rawMarkdown": "I may be wrong but it looks like the size of the simulation is bigger than 25x25 and the data we have is only a partial window of it. I didn't see mention of it so if it's written somewhere I'm sorry for that.\n\nWhen I apply the rules of Game of life to the starting state *delta* times I do not obtain the same result as the label. The difference is always on the edge of the grid. So i guess that there are alive cells outside of the window.\nMy code is here (please tell me if it's wrong):\nhttps://www.kaggle.com/wolfy73/hidden-alive-cells-evidence",
      "votes": null
    },
    {
      "id": "1022227",
      "postDate": "09/22/2020 11:52:05",
      "content": "<p>The cells wrap around, so the neighbours of cell (0,0) include (24,24) and (24,0), for example. Modulo 25 arithmetic, in other words.</p>",
      "rawMarkdown": "The cells wrap around, so the neighbours of cell (0,0) include (24,24) and (24,0), for example. Modulo 25 arithmetic, in other words.",
      "votes": null
    },
    {
      "id": "1022369",
      "postDate": "09/22/2020 13:43:29",
      "content": "<p>Okay ! Thank you very much for your reply 👍</p>",
      "rawMarkdown": "Okay ! Thank you very much for your reply 👍",
      "votes": null
    },
    {
      "id": "1027564",
      "postDate": "09/26/2020 08:40:15",
      "content": "<p>Shall the neighbours also include (0,24)? <br>\nIf not, could you please elaborate more?</p>",
      "rawMarkdown": "Shall the neighbours also include (0,24)? \nIf not, could you please elaborate more?",
      "votes": null
    },
    {
      "id": "1028125",
      "postDate": "09/26/2020 16:01:41",
      "content": "<p>Conways GOL uses moore neighborhood. So every cell you can reach by one step in either direction, including diagonals. </p>\n<p>In this case that includes (0,24).</p>",
      "rawMarkdown": "Conways GOL uses moore neighborhood. So every cell you can reach by one step in either direction, including diagonals. \n\nIn this case that includes (0,24).",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 1022227,
      "author_name": "johnlucas0",
      "author_url": "",
      "post_date": "09/22/2020 11:52:05",
      "content": "<p>The cells wrap around, so the neighbours of cell (0,0) include (24,24) and (24,0), for example. Modulo 25 arithmetic, in other words.</p>",
      "votes": null,
      "replies": [
        {
          "id": 1022369,
          "author_name": "wolfy73",
          "author_url": "",
          "post_date": "09/22/2020 13:43:29",
          "content": "<p>Okay ! Thank you very much for your reply 👍</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 1027564,
          "author_name": "jitaiyi",
          "author_url": "",
          "post_date": "09/26/2020 08:40:15",
          "content": "<p>Shall the neighbours also include (0,24)? <br>\nIf not, could you please elaborate more?</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 1028125,
          "author_name": "jiripodivin",
          "author_url": "",
          "post_date": "09/26/2020 16:01:41",
          "content": "<p>Conways GOL uses moore neighborhood. So every cell you can reach by one step in either direction, including diagonals. </p>\n<p>In this case that includes (0,24).</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "1022041": "I may be wrong but it looks like the size of the simulation is bigger than 25x25 and the data we have is only a partial window of it. I didn't see mention of it so if it's written somewhere I'm sorry for that.\n\nWhen I apply the rules of Game of life to the starting state *delta* times I do not obtain the same result as the label. The difference is always on the edge of the grid. So i guess that there are alive cells outside of the window.\nMy code is here (please tell me if it's wrong):\nhttps://www.kaggle.com/wolfy73/hidden-alive-cells-evidence",
    "1022227": "The cells wrap around, so the neighbours of cell (0,0) include (24,24) and (24,0), for example. Modulo 25 arithmetic, in other words.",
    "1022369": "Okay ! Thank you very much for your reply 👍",
    "1027564": "Shall the neighbours also include (0,24)? \nIf not, could you please elaborate more?",
    "1028125": "Conways GOL uses moore neighborhood. So every cell you can reach by one step in either direction, including diagonals. \n\nIn this case that includes (0,24)."
  },
  "source": "meta"
}