{
  "id": 20541,
  "title": "Reverse engineering location",
  "url": "/competitions/draper-satellite-image-chronology/discussion/20541",
  "author_name": "",
  "post_date": "2016-04-29T15:54:14.113Z",
  "votes": 5,
  "comment_count": 7,
  "views": 2152,
  "content": "<p>Are we allowed to reverse engineer the locations?</p>\n\n<p>Location + External data may give valuable information to use for classification, for instance, one could look at the busiest day for a certain location, or employ Google Maps for more context surrounding a location.</p>",
  "messages": [
    {
      "id": "117551",
      "postDate": "04/29/2016 15:54:14",
      "content": "<p>Are we allowed to reverse engineer the locations?</p>\n\n<p>Location + External data may give valuable information to use for classification, for instance, one could look at the busiest day for a certain location, or employ Google Maps for more context surrounding a location.</p>",
      "rawMarkdown": "Are we allowed to reverse engineer the locations?\r\n\r\nLocation + External data may give valuable information to use for classification, for instance, one could look at the busiest day for a certain location, or employ Google Maps for more context surrounding a location.",
      "votes": null
    },
    {
      "id": "117579",
      "postDate": "04/29/2016 18:23:14",
      "content": "<p>Yes, reverse engineering locations is allowed, as is using external data.</p>",
      "rawMarkdown": "Yes, reverse engineering locations is allowed, as is using external data.",
      "votes": null
    },
    {
      "id": "117625",
      "postDate": "04/29/2016 21:42:58",
      "content": "<p>OK, so here's a few easy ones for starters. From the test images...</p>\n\n<p>Set192: <a href=\"https://www.google.co.uk/maps/@32.7339712,-117.2033673,262m/data=!3m1!1e3\">https://www.google.co.uk/maps/@32.7339712,-117.2033673,262m/data=!3m1!1e3</a></p>\n\n<p>Set329: <a href=\"https://www.google.co.uk/maps/@33.7732692,-118.2247328,360m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7732692,-118.2247328,360m/data=!3m1!1e3</a></p>\n\n<p>Set334: <a href=\"https://www.google.co.uk/maps/@32.7535865,-117.2347117,313m/data=!3m1!1e3\">https://www.google.co.uk/maps/@32.7535865,-117.2347117,313m/data=!3m1!1e3</a></p>",
      "rawMarkdown": "OK, so here's a few easy ones for starters. From the test images...\r\n\r\nSet192: https://www.google.co.uk/maps/@32.7339712,-117.2033673,262m/data=!3m1!1e3\r\n\r\nSet329: https://www.google.co.uk/maps/@33.7732692,-118.2247328,360m/data=!3m1!1e3\r\n\r\nSet334: https://www.google.co.uk/maps/@32.7535865,-117.2347117,313m/data=!3m1!1e3",
      "votes": null
    },
    {
      "id": "118579",
      "postDate": "05/04/2016 11:03:36",
      "content": "<p>Nice work Chippy. May I ask how did you find it?</p>",
      "rawMarkdown": "Nice work Chippy. May I ask how did you find it?",
      "votes": null
    },
    {
      "id": "118589",
      "postDate": "05/04/2016 12:27:31",
      "content": "<p>Good idea ! Share more !</p>\n\n<p>train - set279/set201: <a href=\"https://www.google.co.uk/maps/@33.7362149,-118.1917025,951m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7362149,-118.1917025,951m/data=!3m1!1e3</a></p>\n\n<p>train - set251/set297: <a href=\"https://www.google.co.uk/maps/@33.753386,-118.2335964,951m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.753386,-118.2335964,951m/data=!3m1!1e3</a></p>\n\n<p>train - set10: <a href=\"https://www.google.co.uk/maps/@33.7757665,-118.2050549,1149m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7757665,-118.2050549,1149m/data=!3m1!1e3</a></p>\n\n<p>train - set44: <a href=\"https://www.google.co.uk/maps/@33.7675387,-118.2159779,1148m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7675387,-118.2159779,1148m/data=!3m1!1e3</a></p>\n\n<p>train - set78: <a href=\"https://www.google.co.uk/maps/@33.7435176,-118.2008179,571m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7435176,-118.2008179,571m/data=!3m1!1e3</a></p>\n\n<p>train -  set59: <a href=\"https://www.google.co.uk/maps/@33.7604544,-118.2300511,286m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7604544,-118.2300511,286m/data=!3m1!1e3</a></p>\n\n<p>train - set311: <a href=\"https://www.google.co.uk/maps/@33.758952,-118.2299857,285m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.758952,-118.2299857,285m/data=!3m1!1e3</a></p>",
      "rawMarkdown": "Good idea ! Share more !\r\n\r\ntrain - set279/set201: https://www.google.co.uk/maps/@33.7362149,-118.1917025,951m/data=!3m1!1e3\r\n\r\ntrain - set251/set297: https://www.google.co.uk/maps/@33.753386,-118.2335964,951m/data=!3m1!1e3\r\n\r\ntrain - set10: https://www.google.co.uk/maps/@33.7757665,-118.2050549,1149m/data=!3m1!1e3\r\n\r\ntrain - set44: https://www.google.co.uk/maps/@33.7675387,-118.2159779,1148m/data=!3m1!1e3\r\n\r\ntrain - set78: https://www.google.co.uk/maps/@33.7435176,-118.2008179,571m/data=!3m1!1e3\r\n\r\ntrain -  set59: https://www.google.co.uk/maps/@33.7604544,-118.2300511,286m/data=!3m1!1e3\r\n\r\ntrain - set311: https://www.google.co.uk/maps/@33.758952,-118.2299857,285m/data=!3m1!1e3",
      "votes": null
    },
    {
      "id": "118719",
      "postDate": "05/04/2016 23:14:43",
      "content": "<p>I have 2 young children who enjoy puzzles like this...<a href=\"https://www.theguardian.com/technology/2015/feb/06/wheres-wally-wheres-waldo-machine-learning-algorithm\">Where's Wally</a>.</p>\n\n<p>Once you find a few it gets much easier to find more, and you start to realise that images are in clusters. Having found about 5 clusters so far, 3 of those clusters contain only Test images no Training images. </p>\n\n<p>Should make the overall competition a little more complex..!</p>\n\n<p>[quote=smota;118579]</p>\n\n<p>Nice work Chippy. May I ask how did you find it?</p>\n\n<p>[/quote]</p>",
      "rawMarkdown": "I have 2 young children who enjoy puzzles like this...[Where's Wally][1].\r\n\r\nOnce you find a few it gets much easier to find more, and you start to realise that images are in clusters. Having found about 5 clusters so far, 3 of those clusters contain only Test images no Training images. \r\n\r\nShould make the overall competition a little more complex..!\r\n\r\n\r\n[quote=smota;118579]\r\n\r\nNice work Chippy. May I ask how did you find it?\r\n\r\n[/quote]\r\n\r\n\r\n  [1]: https://www.theguardian.com/technology/2015/feb/06/wheres-wally-wheres-waldo-machine-learning-algorithm",
      "votes": null
    },
    {
      "id": "118964",
      "postDate": "05/06/2016 12:03:55",
      "content": "<p>[quote=Chippy;118719]\nOnce you find a few it gets much easier to find more, and you start to realise that images are in clusters. Having found about 5 clusters so far, 3 of those clusters contain only Test images no Training images. \n[/quote]</p>\n\n<p>Great work. Would you point us to the clusters' regions, so we can search for images within them?</p>",
      "rawMarkdown": "[quote=Chippy;118719]\r\nOnce you find a few it gets much easier to find more, and you start to realise that images are in clusters. Having found about 5 clusters so far, 3 of those clusters contain only Test images no Training images. \r\n[/quote]\r\n\r\nGreat work. Would you point us to the clusters' regions, so we can search for images within them?",
      "votes": null
    },
    {
      "id": "118988",
      "postDate": "05/06/2016 15:06:49",
      "content": "<p>For those that need a few more hints....</p>\n\n<p>In the test datasets there are a lot of pictures of what look like open cast mining maybe sand or gravel extraction. Maybe there are a lot pictures because it's a big mine somewhere to the right and up a bit from San Diego as the plane flies?</p>\n\n<p>Having found the mining cluster, notice their are lots of pictures of scrubland, crisis crossed with paths. Does it look like the land to the north of the mine?</p>\n\n<p>Most housing is on the grid system so pictures of housing that aren't grid based must be pretty easy to find. Where's the nearest such housing adjacent to some scrubland I wonder?</p>\n\n<p>That's 3 clusters for you. Happy geocoding!</p>",
      "rawMarkdown": "For those that need a few more hints....\r\n\r\nIn the test datasets there are a lot of pictures of what look like open cast mining maybe sand or gravel extraction. Maybe there are a lot pictures because it's a big mine somewhere to the right and up a bit from San Diego as the plane flies?\r\n\r\nHaving found the mining cluster, notice their are lots of pictures of scrubland, crisis crossed with paths. Does it look like the land to the north of the mine?\r\n\r\nMost housing is on the grid system so pictures of housing that aren't grid based must be pretty easy to find. Where's the nearest such housing adjacent to some scrubland I wonder?\r\n\r\nThat's 3 clusters for you. Happy geocoding!",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 117579,
      "author_name": "wcukierski",
      "author_url": "",
      "post_date": "04/29/2016 18:23:14",
      "content": "<p>Yes, reverse engineering locations is allowed, as is using external data.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 117625,
      "author_name": "nigelcarpenter",
      "author_url": "",
      "post_date": "04/29/2016 21:42:58",
      "content": "<p>OK, so here's a few easy ones for starters. From the test images...</p>\n\n<p>Set192: <a href=\"https://www.google.co.uk/maps/@32.7339712,-117.2033673,262m/data=!3m1!1e3\">https://www.google.co.uk/maps/@32.7339712,-117.2033673,262m/data=!3m1!1e3</a></p>\n\n<p>Set329: <a href=\"https://www.google.co.uk/maps/@33.7732692,-118.2247328,360m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7732692,-118.2247328,360m/data=!3m1!1e3</a></p>\n\n<p>Set334: <a href=\"https://www.google.co.uk/maps/@32.7535865,-117.2347117,313m/data=!3m1!1e3\">https://www.google.co.uk/maps/@32.7535865,-117.2347117,313m/data=!3m1!1e3</a></p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 118579,
      "author_name": "santiagomota",
      "author_url": "",
      "post_date": "05/04/2016 11:03:36",
      "content": "<p>Nice work Chippy. May I ask how did you find it?</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 118589,
      "author_name": "paulorzp",
      "author_url": "",
      "post_date": "05/04/2016 12:27:31",
      "content": "<p>Good idea ! Share more !</p>\n\n<p>train - set279/set201: <a href=\"https://www.google.co.uk/maps/@33.7362149,-118.1917025,951m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7362149,-118.1917025,951m/data=!3m1!1e3</a></p>\n\n<p>train - set251/set297: <a href=\"https://www.google.co.uk/maps/@33.753386,-118.2335964,951m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.753386,-118.2335964,951m/data=!3m1!1e3</a></p>\n\n<p>train - set10: <a href=\"https://www.google.co.uk/maps/@33.7757665,-118.2050549,1149m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7757665,-118.2050549,1149m/data=!3m1!1e3</a></p>\n\n<p>train - set44: <a href=\"https://www.google.co.uk/maps/@33.7675387,-118.2159779,1148m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7675387,-118.2159779,1148m/data=!3m1!1e3</a></p>\n\n<p>train - set78: <a href=\"https://www.google.co.uk/maps/@33.7435176,-118.2008179,571m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7435176,-118.2008179,571m/data=!3m1!1e3</a></p>\n\n<p>train -  set59: <a href=\"https://www.google.co.uk/maps/@33.7604544,-118.2300511,286m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.7604544,-118.2300511,286m/data=!3m1!1e3</a></p>\n\n<p>train - set311: <a href=\"https://www.google.co.uk/maps/@33.758952,-118.2299857,285m/data=!3m1!1e3\">https://www.google.co.uk/maps/@33.758952,-118.2299857,285m/data=!3m1!1e3</a></p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 118719,
      "author_name": "nigelcarpenter",
      "author_url": "",
      "post_date": "05/04/2016 23:14:43",
      "content": "<p>I have 2 young children who enjoy puzzles like this...<a href=\"https://www.theguardian.com/technology/2015/feb/06/wheres-wally-wheres-waldo-machine-learning-algorithm\">Where's Wally</a>.</p>\n\n<p>Once you find a few it gets much easier to find more, and you start to realise that images are in clusters. Having found about 5 clusters so far, 3 of those clusters contain only Test images no Training images. </p>\n\n<p>Should make the overall competition a little more complex..!</p>\n\n<p>[quote=smota;118579]</p>\n\n<p>Nice work Chippy. May I ask how did you find it?</p>\n\n<p>[/quote]</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 118964,
      "author_name": "itodorovic",
      "author_url": "",
      "post_date": "05/06/2016 12:03:55",
      "content": "<p>[quote=Chippy;118719]\nOnce you find a few it gets much easier to find more, and you start to realise that images are in clusters. Having found about 5 clusters so far, 3 of those clusters contain only Test images no Training images. \n[/quote]</p>\n\n<p>Great work. Would you point us to the clusters' regions, so we can search for images within them?</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 118988,
      "author_name": "nigelcarpenter",
      "author_url": "",
      "post_date": "05/06/2016 15:06:49",
      "content": "<p>For those that need a few more hints....</p>\n\n<p>In the test datasets there are a lot of pictures of what look like open cast mining maybe sand or gravel extraction. Maybe there are a lot pictures because it's a big mine somewhere to the right and up a bit from San Diego as the plane flies?</p>\n\n<p>Having found the mining cluster, notice their are lots of pictures of scrubland, crisis crossed with paths. Does it look like the land to the north of the mine?</p>\n\n<p>Most housing is on the grid system so pictures of housing that aren't grid based must be pretty easy to find. Where's the nearest such housing adjacent to some scrubland I wonder?</p>\n\n<p>That's 3 clusters for you. Happy geocoding!</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "117551": "Are we allowed to reverse engineer the locations?\r\n\r\nLocation + External data may give valuable information to use for classification, for instance, one could look at the busiest day for a certain location, or employ Google Maps for more context surrounding a location.",
    "117579": "Yes, reverse engineering locations is allowed, as is using external data.",
    "117625": "OK, so here's a few easy ones for starters. From the test images...\r\n\r\nSet192: https://www.google.co.uk/maps/@32.7339712,-117.2033673,262m/data=!3m1!1e3\r\n\r\nSet329: https://www.google.co.uk/maps/@33.7732692,-118.2247328,360m/data=!3m1!1e3\r\n\r\nSet334: https://www.google.co.uk/maps/@32.7535865,-117.2347117,313m/data=!3m1!1e3",
    "118579": "Nice work Chippy. May I ask how did you find it?",
    "118589": "Good idea ! Share more !\r\n\r\ntrain - set279/set201: https://www.google.co.uk/maps/@33.7362149,-118.1917025,951m/data=!3m1!1e3\r\n\r\ntrain - set251/set297: https://www.google.co.uk/maps/@33.753386,-118.2335964,951m/data=!3m1!1e3\r\n\r\ntrain - set10: https://www.google.co.uk/maps/@33.7757665,-118.2050549,1149m/data=!3m1!1e3\r\n\r\ntrain - set44: https://www.google.co.uk/maps/@33.7675387,-118.2159779,1148m/data=!3m1!1e3\r\n\r\ntrain - set78: https://www.google.co.uk/maps/@33.7435176,-118.2008179,571m/data=!3m1!1e3\r\n\r\ntrain -  set59: https://www.google.co.uk/maps/@33.7604544,-118.2300511,286m/data=!3m1!1e3\r\n\r\ntrain - set311: https://www.google.co.uk/maps/@33.758952,-118.2299857,285m/data=!3m1!1e3",
    "118719": "I have 2 young children who enjoy puzzles like this...[Where's Wally][1].\r\n\r\nOnce you find a few it gets much easier to find more, and you start to realise that images are in clusters. Having found about 5 clusters so far, 3 of those clusters contain only Test images no Training images. \r\n\r\nShould make the overall competition a little more complex..!\r\n\r\n\r\n[quote=smota;118579]\r\n\r\nNice work Chippy. May I ask how did you find it?\r\n\r\n[/quote]\r\n\r\n\r\n  [1]: https://www.theguardian.com/technology/2015/feb/06/wheres-wally-wheres-waldo-machine-learning-algorithm",
    "118964": "[quote=Chippy;118719]\r\nOnce you find a few it gets much easier to find more, and you start to realise that images are in clusters. Having found about 5 clusters so far, 3 of those clusters contain only Test images no Training images. \r\n[/quote]\r\n\r\nGreat work. Would you point us to the clusters' regions, so we can search for images within them?",
    "118988": "For those that need a few more hints....\r\n\r\nIn the test datasets there are a lot of pictures of what look like open cast mining maybe sand or gravel extraction. Maybe there are a lot pictures because it's a big mine somewhere to the right and up a bit from San Diego as the plane flies?\r\n\r\nHaving found the mining cluster, notice their are lots of pictures of scrubland, crisis crossed with paths. Does it look like the land to the north of the mine?\r\n\r\nMost housing is on the grid system so pictures of housing that aren't grid based must be pretty easy to find. Where's the nearest such housing adjacent to some scrubland I wonder?\r\n\r\nThat's 3 clusters for you. Happy geocoding!"
  },
  "source": "meta"
}