"tail event" meaning in English

{
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      "args": {
        "1": "en",
        "2": "tail",
        "3": "event"
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      "expansion": "tail + event",
      "name": "af"
    }
  ],
  "etymology_text": "tail + event",
  "forms": [
    {
      "form": "tail events",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tail event (plural tail events)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "86 6 8",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w+disamb"
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      "glosses": [
        "an event associated with a given infinite sequence Y=y_k|k>k_0 that is determined by any subsequence of the form Y_n=y_k|k>n,n>k_0 (a \"tail\" of that sequence)"
      ],
      "id": "en-tail_event-en-noun-ERISQCu1",
      "links": [
        [
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        ],
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          "sequence",
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        ],
        [
          "determine",
          "determine"
        ]
      ],
      "raw_glosses": [
        "(probability) an event associated with a given infinite sequence Y=y_k|k>k_0 that is determined by any subsequence of the form Y_n=y_k|k>n,n>k_0 (a \"tail\" of that sequence)"
      ],
      "related": [
        {
          "_dis1": "100 0 0",
          "sense": "tail of sequence",
          "word": "Kolmogorov's zero-one law"
        }
      ],
      "topics": [
        "mathematics",
        "probability",
        "sciences"
      ]
    },
    {
      "categories": [],
      "examples": [
        {
          "ref": "2012, Masahiro Kawai, Eswar S. Prasad, New Paradigms for Financial Regulation: Emerging Market Perspectives, Brookings Institution Press, page 186",
          "text": "Exactly two years later, it was shattered by the force of a tsunami equivalent to the impact of 250 jumbo jets flying at 1,000 kilometers an hour—the very apotheosis of a real tail event.",
          "type": "quotation"
        },
        {
          "ref": "2013, Mark Spitznagel, The Dao of Capital: Austrian Investing in a Distorted World, John Wiley & Sons, page 243",
          "text": "... When the MS index is high ex ante, subsequent large stock market losses and crashes are no longer tail events at all—rather they are perfectly expected events.",
          "type": "quotation"
        },
        {
          "ref": "2012, Masahiro Kawai, Eswar S. Prasad, New Paradigms for Financial Regulation: Emerging Market Perspectives, Brookings Institution Press, page 185",
          "text": "Policy frameworks anticipating only “ordinary” shocks within the usual economic cycles may not be very effective in mitigating the impact of such tail events when they actually materialize.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "a low-probability event"
      ],
      "id": "en-tail_event-en-noun-QeNCMFGJ",
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    },
    {
      "glosses": [
        "an event that initiates an activity"
      ],
      "id": "en-tail_event-en-noun-u72ne8nm",
      "links": [
        [
          "event",
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          "initiate",
          "initiate"
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        [
          "activity",
          "activity"
        ]
      ]
    }
  ],
  "word": "tail event"
}

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      "args": {
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        "2": "tail",
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      "expansion": "tail + event",
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    }
  ],
  "etymology_text": "tail + event",
  "forms": [
    {
      "form": "tail events",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tail event (plural tail events)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "sense": "tail of sequence",
      "word": "Kolmogorov's zero-one law"
    }
  ],
  "senses": [
    {
      "glosses": [
        "an event associated with a given infinite sequence Y=y_k|k>k_0 that is determined by any subsequence of the form Y_n=y_k|k>n,n>k_0 (a \"tail\" of that sequence)"
      ],
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      ],
      "raw_glosses": [
        "(probability) an event associated with a given infinite sequence Y=y_k|k>k_0 that is determined by any subsequence of the form Y_n=y_k|k>n,n>k_0 (a \"tail\" of that sequence)"
      ],
      "topics": [
        "mathematics",
        "probability",
        "sciences"
      ]
    },
    {
      "categories": [
        "English terms with quotations"
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      "examples": [
        {
          "ref": "2012, Masahiro Kawai, Eswar S. Prasad, New Paradigms for Financial Regulation: Emerging Market Perspectives, Brookings Institution Press, page 186",
          "text": "Exactly two years later, it was shattered by the force of a tsunami equivalent to the impact of 250 jumbo jets flying at 1,000 kilometers an hour—the very apotheosis of a real tail event.",
          "type": "quotation"
        },
        {
          "ref": "2013, Mark Spitznagel, The Dao of Capital: Austrian Investing in a Distorted World, John Wiley & Sons, page 243",
          "text": "... When the MS index is high ex ante, subsequent large stock market losses and crashes are no longer tail events at all—rather they are perfectly expected events.",
          "type": "quotation"
        },
        {
          "ref": "2012, Masahiro Kawai, Eswar S. Prasad, New Paradigms for Financial Regulation: Emerging Market Perspectives, Brookings Institution Press, page 185",
          "text": "Policy frameworks anticipating only “ordinary” shocks within the usual economic cycles may not be very effective in mitigating the impact of such tail events when they actually materialize.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "a low-probability event"
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        "an event that initiates an activity"
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        ],
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      ]
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  ],
  "word": "tail event"
}