{
  "id": 39859,
  "title": "Any success with pre-trained models?",
  "url": "/competitions/cdiscount-image-classification-challenge/discussion/39859",
  "author_name": "",
  "post_date": "2017-09-22T13:48:41.479727100Z",
  "votes": null,
  "comment_count": 5,
  "views": 0,
  "content": "<p>I am using InceptionV3. I've trained the modified layers and fine tuned the inner layers with 60% of the training set and 2 epochs only, due to execution time. The results are very pour for now [LB 0.27]. Did any one get better results? </p>",
  "messages": [
    {
      "id": "223530",
      "postDate": "09/22/2017 13:48:41",
      "content": "<p>I am using InceptionV3. I've trained the modified layers and fine tuned the inner layers with 60% of the training set and 2 epochs only, due to execution time. The results are very pour for now [LB 0.27]. Did any one get better results? </p>",
      "rawMarkdown": "I am using InceptionV3. I've trained the modified layers and fine tuned the inner layers with 60% of the training set and 2 epochs only, due to execution time. The results are very pour for now [LB 0.27]. Did any one get better results?",
      "votes": null
    },
    {
      "id": "223534",
      "postDate": "09/22/2017 13:59:30",
      "content": "<p>I am using similar network now, still no luck. </p>",
      "rawMarkdown": "I am using similar network now, still no luck.",
      "votes": null
    },
    {
      "id": "223539",
      "postDate": "09/22/2017 14:11:50",
      "content": "<p>Have you trained the network with all training data?</p>",
      "rawMarkdown": "Have you trained the network with all training data?",
      "votes": null
    },
    {
      "id": "223572",
      "postDate": "09/22/2017 16:02:28",
      "content": "<p>The dataset is highly unbalanced. What approach did you use to select 60% of training set?</p>",
      "rawMarkdown": "The dataset is highly unbalanced. What approach did you use to select 60% of training set?",
      "votes": null
    },
    {
      "id": "223623",
      "postDate": "09/22/2017 18:57:59",
      "content": "<p>No extra care with unbalance. Normal random sampling with the approach of bson random access avaliable in kernels.</p>",
      "rawMarkdown": "No extra care with unbalance. Normal random sampling with the approach of bson random access avaliable in kernels.",
      "votes": null
    },
    {
      "id": "223625",
      "postDate": "09/22/2017 19:08:19",
      "content": "<p>I tried using the output of VGG16's block5_pool layer, saving it to disk, and training a classifier on top of that.</p>\n\n<p>The good news is that the training is very fast, and gives okay results. 0.45 on LB. Struggling to improve much beyond that  though; retraining the convolutional layers makes things much slower.</p>\n\n<p>This is when using 102400 out of 7069896 for training + validation, a 10% validation split, and only targeting the most common 2048 categories (upper bound of 94% accuracy).</p>\n\n<p>Let me know if anyone wants to team up, I'm eager to get back into the competitive scores :)</p>",
      "rawMarkdown": "I tried using the output of VGG16's block5_pool layer, saving it to disk, and training a classifier on top of that.\n\nThe good news is that the training is very fast, and gives okay results. 0.45 on LB. Struggling to improve much beyond that  though; retraining the convolutional layers makes things much slower.\n\nThis is when using 102400 out of 7069896 for training + validation, a 10% validation split, and only targeting the most common 2048 categories (upper bound of 94% accuracy).\n\nLet me know if anyone wants to team up, I'm eager to get back into the competitive scores :)",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 223534,
      "author_name": "woodywang",
      "author_url": "",
      "post_date": "09/22/2017 13:59:30",
      "content": "<p>I am using similar network now, still no luck. </p>",
      "votes": null,
      "replies": [
        {
          "id": 223539,
          "author_name": "aloisiodn",
          "author_url": "",
          "post_date": "09/22/2017 14:11:50",
          "content": "<p>Have you trained the network with all training data?</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 223572,
      "author_name": "nabinn",
      "author_url": "",
      "post_date": "09/22/2017 16:02:28",
      "content": "<p>The dataset is highly unbalanced. What approach did you use to select 60% of training set?</p>",
      "votes": null,
      "replies": [
        {
          "id": 223623,
          "author_name": "aloisiodn",
          "author_url": "",
          "post_date": "09/22/2017 18:57:59",
          "content": "<p>No extra care with unbalance. Normal random sampling with the approach of bson random access avaliable in kernels.</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 223625,
      "author_name": "ndahlquist",
      "author_url": "",
      "post_date": "09/22/2017 19:08:19",
      "content": "<p>I tried using the output of VGG16's block5_pool layer, saving it to disk, and training a classifier on top of that.</p>\n\n<p>The good news is that the training is very fast, and gives okay results. 0.45 on LB. Struggling to improve much beyond that  though; retraining the convolutional layers makes things much slower.</p>\n\n<p>This is when using 102400 out of 7069896 for training + validation, a 10% validation split, and only targeting the most common 2048 categories (upper bound of 94% accuracy).</p>\n\n<p>Let me know if anyone wants to team up, I'm eager to get back into the competitive scores :)</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "223530": "I am using InceptionV3. I've trained the modified layers and fine tuned the inner layers with 60% of the training set and 2 epochs only, due to execution time. The results are very pour for now [LB 0.27]. Did any one get better results?",
    "223534": "I am using similar network now, still no luck.",
    "223539": "Have you trained the network with all training data?",
    "223572": "The dataset is highly unbalanced. What approach did you use to select 60% of training set?",
    "223623": "No extra care with unbalance. Normal random sampling with the approach of bson random access avaliable in kernels.",
    "223625": "I tried using the output of VGG16's block5_pool layer, saving it to disk, and training a classifier on top of that.\n\nThe good news is that the training is very fast, and gives okay results. 0.45 on LB. Struggling to improve much beyond that  though; retraining the convolutional layers makes things much slower.\n\nThis is when using 102400 out of 7069896 for training + validation, a 10% validation split, and only targeting the most common 2048 categories (upper bound of 94% accuracy).\n\nLet me know if anyone wants to team up, I'm eager to get back into the competitive scores :)"
  },
  "source": "meta"
}