ranking Questions
8
Solved
After reading How Not to Sort by Average Rating, I was curious if anyone has a Python implementation of a Lower bound of Wilson score confidence interval for a Bernoulli parameter?
Drawn asked 5/4, 2012 at 13:32
5
Solved
I have a vector say
c(1,1,1,1,1,1,2,3,4,5,7,7,5,7,7,7)
How do I count each element, and then return the e.g. 3 most common elements, i.e. 1, 7, 5?
6
Solved
In R I want to allocate projects to people based on their rank preferences but also their performance. Say I have 5 projects and 3 people. In this case, all three people want project A because it's...
2
Solved
Consider a dataframe with three columns: group_ID, item_ID and value. Say we have 10 itemIDs total.
I need to rank each item_ID (1 to 10) within each group_ID based on value , and then see the mean...
4
Solved
I am working with database data that manipulates college students exam results. Basically, I am pulling the records from a MySQL database and pulling one class at any given time. I want to rank the...
Avivah asked 28/5, 2011 at 17:26
3
My objective is to create a simple density or barplot of a long dataframe which shows the relative frequency of nationalities in a course (MOOC). I just don't want all of the nationalities in there...
3
My array structure is as follows -
[
[
"points" => 10,
"details" => ["name" => "Team A", "rank" => ""]
],
[
"point...
Odericus asked 7/4, 2013 at 13:11
0
I am getting an issue when trying to rank documents based on score and attempts
"$rank must be specified with a top level sortBy expression with exactly one element"
The query is :
$res...
14
The following query:
SELECT
year, id, rate
FROM h
WHERE year BETWEEN 2000 AND 2009
ORDER BY id, rate DESC
yields:
year | id | rate
2006 | p01 | 8.0
2003 | p01 | 7.4
2008 | p01 | 6.8
2001 | p01 | ...
Pauli asked 25/1, 2010 at 1:25
25
Solved
I'm looking for a string similarity algorithm that yields better results on variable length strings than the ones that are usually suggested (levenshtein distance, soundex, etc).
For example,
Giv...
Vindication asked 17/3, 2009 at 6:10
3
Solved
I have a matrix which I want to convert to one with binary output (0 vs 1). The matrix to be converted contains four rows of rankings (1 to 4):
mat1.data <- c(4, 3, 3, 3, 3, 2, 2, 1, 1, 1,
3, 4...
Syck asked 16/7, 2022 at 14:3
2
Solved
I want to calculate and store the dense rank and gapped rank for all entries in an array using PHP.
I want to do this in PHP (not MySQL because I am dealing with dynamic combinations 100,000 to 900...
Ratty asked 28/6, 2022 at 18:6
5
Solved
For a school project, we'll have to implement a ranking system. However, we figured that a dumb rank average would suck: something that one user ranked 5 stars would have a better average that some...
Arsphenamine asked 22/3, 2010 at 20:33
12
Solved
How do I find the above without removing the largest element and searching again? Is there a more efficient way to do this? It does not matter if the these elements are duplicates.
Besom asked 11/9, 2009 at 19:7
3
I have a question that can we normalize the levenshtein edit distance by dividing the e.d value by the length of the two strings?
I am asking this because, if we compare two strings of unequal leng...
Promethean asked 20/8, 2017 at 14:48
3
Solved
First Create some example data (e1,e2,e3 are types and test is the index name):
PUT test/e1/1
{
"id":1
"subject": "subject 1"
}
PUT test/e2/1
{
"id":1
"subject": "subject 2"
}
PUT test/e3/2
{
...
Nightclub asked 27/4, 2015 at 3:0
2
Solved
TL;DR I can't figure out how to write a recursive Postgres query that doesn't use aggregate functions in its recursive part. Is there an alternative way to write the recursive query shown below?
L...
Nuke asked 31/7, 2019 at 22:36
4
Solved
I have a mongoDB collection that looks like this:
{
"_id": 1,
"name": "John Doe",
"company": "Acme",
"email": "[email prote...
2
Solved
I am trying to sort the number in descending order using javascript. It works well for strings but when I use numbers it gives me wrong results.
Following is the code:
<html>
<head>
&...
Botanical asked 12/11, 2015 at 16:50
4
Solved
I am building a site with a ton of 1999 style capitalization of navigation and headings. I have been simply adding in the text content as it appears (capitalized), but the other designer on the pro...
9
I have seen:
how do I find the closest value to a given number in an array?
How do I find the closest array element to an arbitrary (non-member) number?.
These relate to vanilla python and not ...
13
Solved
I'm looking for an efficient way to calculate the rank vector of a list in Python, similar to R's rank function. In a simple list with no ties between the elements, element i of the rank vector of ...
7
Solved
This seems like it must be a very common task, but I can't find a solution in google or SO. I want to add a column called 'rank' to 'dat1' based on the sequence that 'order.scores' applies to 'dat'...
8
I am trying to match a single search term against a dictionary of possible matches using a Levenshtein distance algorithm. The algorithm returns a distance expressed as number of operations require...
Ptolemaic asked 1/5, 2012 at 22:46
2
In Wikidata (Wikidata SPARQL endpoint), is there a way to order the SPARQL query results with something like a PageRank?
SELECT DISTINCT ?entity ?entityLabel WHERE {
?entity wdt:P31 wd:Q5.
SERVI...
Coalfish asked 11/9, 2016 at 16:3
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