{
  "id": 162393,
  "title": "Menzies Method and other Dermoscopy Algorithms",
  "url": "/competitions/siim-isic-melanoma-classification/discussion/162393",
  "author_name": "",
  "post_date": "2020-06-28T18:07:31.078300300Z",
  "votes": 4,
  "comment_count": 4,
  "views": 0,
  "content": "<p><strong>Domain knowledge</strong> is often times more important than purely ML techniques.</p>\n\n<p><strong>Menzies method</strong> has the <a href=\"https://jamanetwork.com/journals/jamadermatology/fullarticle/397889\">highest Sensitivity and Accuracy</a> compared to published methods such as ABCD rule and 7-point checklist.</p>\n\n<p>Menzies Negative features (benign lesions):\n- Symmetrical pattern (colours, structure)\n- Single colour</p>\n\n<p>Menzies Positive features (melanoma):\n- Blue-white veil\n- Multiple brown dots\n- Pseudopods\n- Radial streaming\n- Scar-like depigmentation\n- Multiple (5-6) colours\n- Multiple blue/grey dots\n- Broadened network</p>\n\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F656212%2F653282b3bb59a5dfb5422e9a52aacc17%2FMenzies_Method.png?generation=1593367499175442&amp;alt=media\" alt=\"\"></p>\n\n<p><a href=\"https://dermnetnz.org/cme/dermoscopy-course/other-algorithms-for-melanocytic-lesions/\">Reference Link</a> for a detailed list of all Algorithms used for detecting Malignant Melanomas:\n- ABCD rule\n- 7-point checklist\n- Menzies Method\n- C.A.S.H. algorithm\n- CHAOS and clues\n- BLINK algorithm\n- Triage Amalgamated Dermoscopic Algorithm (TADA)</p>",
  "messages": [
    {
      "id": "905690",
      "postDate": "06/28/2020 18:07:31",
      "content": "<p><strong>Domain knowledge</strong> is often times more important than purely ML techniques.</p>\n\n<p><strong>Menzies method</strong> has the <a href=\"https://jamanetwork.com/journals/jamadermatology/fullarticle/397889\">highest Sensitivity and Accuracy</a> compared to published methods such as ABCD rule and 7-point checklist.</p>\n\n<p>Menzies Negative features (benign lesions):\n- Symmetrical pattern (colours, structure)\n- Single colour</p>\n\n<p>Menzies Positive features (melanoma):\n- Blue-white veil\n- Multiple brown dots\n- Pseudopods\n- Radial streaming\n- Scar-like depigmentation\n- Multiple (5-6) colours\n- Multiple blue/grey dots\n- Broadened network</p>\n\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F656212%2F653282b3bb59a5dfb5422e9a52aacc17%2FMenzies_Method.png?generation=1593367499175442&amp;alt=media\" alt=\"\"></p>\n\n<p><a href=\"https://dermnetnz.org/cme/dermoscopy-course/other-algorithms-for-melanocytic-lesions/\">Reference Link</a> for a detailed list of all Algorithms used for detecting Malignant Melanomas:\n- ABCD rule\n- 7-point checklist\n- Menzies Method\n- C.A.S.H. algorithm\n- CHAOS and clues\n- BLINK algorithm\n- Triage Amalgamated Dermoscopic Algorithm (TADA)</p>",
      "rawMarkdown": "**Domain knowledge** is often times more important than purely ML techniques.\n\n**Menzies method** has the [highest Sensitivity and Accuracy](https://jamanetwork.com/journals/jamadermatology/fullarticle/397889) compared to published methods such as ABCD rule and 7-point checklist.\n\nMenzies Negative features (benign lesions):\n- Symmetrical pattern (colours, structure)\n- Single colour\n\nMenzies Positive features (melanoma):\n- Blue-white veil\n- Multiple brown dots\n- Pseudopods\n- Radial streaming\n- Scar-like depigmentation\n- Multiple (5-6) colours\n- Multiple blue/grey dots\n- Broadened network\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F656212%2F653282b3bb59a5dfb5422e9a52aacc17%2FMenzies_Method.png?generation=1593367499175442&amp;alt=media)\n\n\n[Reference Link](https://dermnetnz.org/cme/dermoscopy-course/other-algorithms-for-melanocytic-lesions/) for a detailed list of all Algorithms used for detecting Malignant Melanomas:\n- ABCD rule\n- 7-point checklist\n- Menzies Method\n- C.A.S.H. algorithm\n- CHAOS and clues\n- BLINK algorithm\n- Triage Amalgamated Dermoscopic Algorithm (TADA)",
      "votes": null
    },
    {
      "id": "905845",
      "postDate": "06/28/2020 21:28:34",
      "content": "<p>I'm confused, at the beggining you said that:\n&gt; Domain knowledge is often times more important than purely ML techniques.</p>\n\n<p>But after that you make a list of algorithms. The article aswell is about algorithms.</p>\n\n<p>Would kindly explain what did you try to share or explain?</p>",
      "rawMarkdown": "I'm confused, at the beggining you said that:\n&gt; Domain knowledge is often times more important than purely ML techniques.\n\nBut after that you make a list of algorithms. The article aswell is about algorithms.\n\nWould kindly explain what did you try to share or explain?",
      "votes": null
    },
    {
      "id": "906002",
      "postDate": "06/29/2020 02:52:32",
      "content": "<p><a href=\"/hiramcho\">@hiramcho</a> Those algorithms are used by Doctors in the Demoscopy <strong>domain</strong> to diagnose MMs i.e. they are the <strong>domain knowledge</strong> (vs software / ML technique knowledge)!</p>\n\n<p>Some research papers have been mentioned already in other Discussion Posts where they perform pre-processing to extract this kind of information.</p>\n\n<p>For example:\nStep1: (Optional step) Apply <a href=\"https://www.kaggle.com/c/siim-isic-melanoma-classification/discussion/154876\">Color Constancy</a> and then use <strong>Skin Segmentation</strong> to remove skin (background) and extract only the lesion\nStep2: Extract the <strong>number of colors</strong> present in the lesion, such as light-brown, dark-brown, black, yellow, pink, red, blue-white veil\nStep3: Use this <strong>new feature</strong> (number of colors), along with patient_id information, to improve the accuracy of your predictions</p>",
      "rawMarkdown": "hiramcho Those algorithms are used by Doctors in the Demoscopy **domain** to diagnose MMs i.e. they are the **domain knowledge** (vs software / ML technique knowledge)!\n\nSome research papers have been mentioned already in other Discussion Posts where they perform pre-processing to extract this kind of information.\n\nFor example:\nStep1: (Optional step) Apply [Color Constancy](https://www.kaggle.com/c/siim-isic-melanoma-classification/discussion/154876) and then use **Skin Segmentation** to remove skin (background) and extract only the lesion\nStep2: Extract the **number of colors** present in the lesion, such as light-brown, dark-brown, black, yellow, pink, red, blue-white veil\nStep3: Use this **new feature** (number of colors), along with patient_id information, to improve the accuracy of your predictions",
      "votes": null
    },
    {
      "id": "906013",
      "postDate": "06/29/2020 03:09:24",
      "content": "<p>Then, what you tried to explain is that a hard coded solution it's possible with <strong>domain knowledge</strong>?</p>\n\n<p>As comment, i would say that <strong>domain knowledge</strong> for me (and the books \"Think Like a Data Scientist\" &amp; \"Data Science From Scratch\") it's free of algorithms. For example me, as a molecular biologist my domain knowledge might allow me to understand the fundamental behind sequentiation but programming skills is what allow me to actually use that information. </p>",
      "rawMarkdown": "Then, what you tried to explain is that a hard coded solution it's possible with **domain knowledge**?\n\nAs comment, i would say that **domain knowledge** for me (and the books \"Think Like a Data Scientist\" &amp; \"Data Science From Scratch\") it's free of algorithms. For example me, as a molecular biologist my domain knowledge might allow me to understand the fundamental behind sequentiation but programming skills is what allow me to actually use that information.",
      "votes": null
    },
    {
      "id": "906509",
      "postDate": "06/29/2020 11:07:38",
      "content": "<p>thx</p>",
      "rawMarkdown": "thx",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 905845,
      "author_name": "hiramcho",
      "author_url": "",
      "post_date": "06/28/2020 21:28:34",
      "content": "<p>I'm confused, at the beggining you said that:\n&gt; Domain knowledge is often times more important than purely ML techniques.</p>\n\n<p>But after that you make a list of algorithms. The article aswell is about algorithms.</p>\n\n<p>Would kindly explain what did you try to share or explain?</p>",
      "votes": null,
      "replies": [
        {
          "id": 906002,
          "author_name": "sirishks",
          "author_url": "",
          "post_date": "06/29/2020 02:52:32",
          "content": "<p><a href=\"/hiramcho\">@hiramcho</a> Those algorithms are used by Doctors in the Demoscopy <strong>domain</strong> to diagnose MMs i.e. they are the <strong>domain knowledge</strong> (vs software / ML technique knowledge)!</p>\n\n<p>Some research papers have been mentioned already in other Discussion Posts where they perform pre-processing to extract this kind of information.</p>\n\n<p>For example:\nStep1: (Optional step) Apply <a href=\"https://www.kaggle.com/c/siim-isic-melanoma-classification/discussion/154876\">Color Constancy</a> and then use <strong>Skin Segmentation</strong> to remove skin (background) and extract only the lesion\nStep2: Extract the <strong>number of colors</strong> present in the lesion, such as light-brown, dark-brown, black, yellow, pink, red, blue-white veil\nStep3: Use this <strong>new feature</strong> (number of colors), along with patient_id information, to improve the accuracy of your predictions</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 906013,
          "author_name": "hiramcho",
          "author_url": "",
          "post_date": "06/29/2020 03:09:24",
          "content": "<p>Then, what you tried to explain is that a hard coded solution it's possible with <strong>domain knowledge</strong>?</p>\n\n<p>As comment, i would say that <strong>domain knowledge</strong> for me (and the books \"Think Like a Data Scientist\" &amp; \"Data Science From Scratch\") it's free of algorithms. For example me, as a molecular biologist my domain knowledge might allow me to understand the fundamental behind sequentiation but programming skills is what allow me to actually use that information. </p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 906509,
      "author_name": "romanweilguny",
      "author_url": "",
      "post_date": "06/29/2020 11:07:38",
      "content": "<p>thx</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "905690": "**Domain knowledge** is often times more important than purely ML techniques.\n\n**Menzies method** has the [highest Sensitivity and Accuracy](https://jamanetwork.com/journals/jamadermatology/fullarticle/397889) compared to published methods such as ABCD rule and 7-point checklist.\n\nMenzies Negative features (benign lesions):\n- Symmetrical pattern (colours, structure)\n- Single colour\n\nMenzies Positive features (melanoma):\n- Blue-white veil\n- Multiple brown dots\n- Pseudopods\n- Radial streaming\n- Scar-like depigmentation\n- Multiple (5-6) colours\n- Multiple blue/grey dots\n- Broadened network\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F656212%2F653282b3bb59a5dfb5422e9a52aacc17%2FMenzies_Method.png?generation=1593367499175442&amp;alt=media)\n\n\n[Reference Link](https://dermnetnz.org/cme/dermoscopy-course/other-algorithms-for-melanocytic-lesions/) for a detailed list of all Algorithms used for detecting Malignant Melanomas:\n- ABCD rule\n- 7-point checklist\n- Menzies Method\n- C.A.S.H. algorithm\n- CHAOS and clues\n- BLINK algorithm\n- Triage Amalgamated Dermoscopic Algorithm (TADA)",
    "905845": "I'm confused, at the beggining you said that:\n&gt; Domain knowledge is often times more important than purely ML techniques.\n\nBut after that you make a list of algorithms. The article aswell is about algorithms.\n\nWould kindly explain what did you try to share or explain?",
    "906002": "hiramcho Those algorithms are used by Doctors in the Demoscopy **domain** to diagnose MMs i.e. they are the **domain knowledge** (vs software / ML technique knowledge)!\n\nSome research papers have been mentioned already in other Discussion Posts where they perform pre-processing to extract this kind of information.\n\nFor example:\nStep1: (Optional step) Apply [Color Constancy](https://www.kaggle.com/c/siim-isic-melanoma-classification/discussion/154876) and then use **Skin Segmentation** to remove skin (background) and extract only the lesion\nStep2: Extract the **number of colors** present in the lesion, such as light-brown, dark-brown, black, yellow, pink, red, blue-white veil\nStep3: Use this **new feature** (number of colors), along with patient_id information, to improve the accuracy of your predictions",
    "906013": "Then, what you tried to explain is that a hard coded solution it's possible with **domain knowledge**?\n\nAs comment, i would say that **domain knowledge** for me (and the books \"Think Like a Data Scientist\" &amp; \"Data Science From Scratch\") it's free of algorithms. For example me, as a molecular biologist my domain knowledge might allow me to understand the fundamental behind sequentiation but programming skills is what allow me to actually use that information.",
    "906509": "thx"
  },
  "source": "meta"
}