Elasticsearch, how to calculate cumulative probability of normal distribution?

Question

Suppose, each document has the following data:

{
  //some_other_fields,
  "seasonal_data": [
    {
      "day_of_year": 1,
      "sales": 3
    },
    {
      "day_of_year": 2,
      "sales": 5
    }
  ]
}

When ranking documents, I want to consider seasonal score along with others.

For a given day_of_year, I'll consider 7 days (including 3 days prior, 3 days after). I'll get average sales value of seven days.

We assume sales data follows a normal distribution:

seasonal_score = p-value(avg_sales_7days)

How can this be done in Elasticsearch?

question from:https://stackoverflow.com/questions/65947899/elasticsearch-how-to-calculate-cumulative-probability-of-normal-distribution

Answer 1

Waitting for answers