{
  "id": 3638,
  "title": "MAP evaluation (when 0,0) ",
  "url": "/competitions/event-recommendation-engine-challenge/discussion/3638",
  "author_name": "",
  "post_date": "2013-01-19T16:13:41.913Z",
  "votes": null,
  "comment_count": 2,
  "views": 1367,
  "content": "<p>Hi,</p>\r\n<p>Does the true value for the interested and not-interested fields take 0,0 in the test set? If so, how is the MAP evaluated.</p>\r\n<p>Thanks,</p>\r\n<p>Harish.</p>",
  "messages": [
    {
      "id": "19503",
      "postDate": "01/19/2013 16:13:41",
      "content": "<p>Hi,</p>\r\n<p>Does the true value for the interested and not-interested fields take 0,0 in the test set? If so, how is the MAP evaluated.</p>\r\n<p>Thanks,</p>\r\n<p>Harish.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "19521",
      "postDate": "01/20/2013 00:47:28",
      "content": "<p>MAP is evalued &quot;per user&quot; basis.</p>\r\n<p>if user_1, event_1 is 0,0</p>\r\n<p>and user_1, event_2 is 1,0.</p>\r\n<p>&nbsp;</p>\r\n<p>user_1, [event1, event2] &nbsp;=&gt; 0.5</p>\r\n<p>user_1,[event2, event1] =&gt; 1.0</p>\r\n<p>&nbsp;</p>\r\n<p>&nbsp;</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "19525",
      "postDate": "01/20/2013 03:58:13",
      "content": "<p>@john, harishgp:</p>\r\n<p>I had the same doubt. But, if &nbsp;</p>\r\n<p>user_1, event_1 is 0,0</p>\r\n<p>user_1, event_2 is 1,0</p>\r\n<p>user_1, event_3 is 0,1</p>\r\n<p>Then, is MAP(user_1, [event1, event3,&nbsp;event2]) &nbsp;=&gt; 0.333 &nbsp;or 0.8333? In other words, is (0,0) clubbed with (1,0) or (0,1) ?</p>\r\n<p>Please clarify with values for all the six permutations of [event1, event2, event3].</p>\r\n<p>&nbsp;</p>\r\n<p>Thanks,</p>\r\n<p>Srini</p>\r\n<p>&nbsp;</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 19521,
      "author_name": "sigint",
      "author_url": "",
      "post_date": "01/20/2013 00:47:28",
      "content": "<p>MAP is evalued &quot;per user&quot; basis.</p>\r\n<p>if user_1, event_1 is 0,0</p>\r\n<p>and user_1, event_2 is 1,0.</p>\r\n<p>&nbsp;</p>\r\n<p>user_1, [event1, event2] &nbsp;=&gt; 0.5</p>\r\n<p>user_1,[event2, event1] =&gt; 1.0</p>\r\n<p>&nbsp;</p>\r\n<p>&nbsp;</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 19525,
      "author_name": "srinivv",
      "author_url": "",
      "post_date": "01/20/2013 03:58:13",
      "content": "<p>@john, harishgp:</p>\r\n<p>I had the same doubt. But, if &nbsp;</p>\r\n<p>user_1, event_1 is 0,0</p>\r\n<p>user_1, event_2 is 1,0</p>\r\n<p>user_1, event_3 is 0,1</p>\r\n<p>Then, is MAP(user_1, [event1, event3,&nbsp;event2]) &nbsp;=&gt; 0.333 &nbsp;or 0.8333? In other words, is (0,0) clubbed with (1,0) or (0,1) ?</p>\r\n<p>Please clarify with values for all the six permutations of [event1, event2, event3].</p>\r\n<p>&nbsp;</p>\r\n<p>Thanks,</p>\r\n<p>Srini</p>\r\n<p>&nbsp;</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "19503": "",
    "19521": "",
    "19525": ""
  },
  "source": "meta"
}