Not preferenced weight function

  • Context: Graduate 
  • Thread starter Thread starter Iraides Belandria
  • Start date Start date
  • Tags Tags
    Function Weight
Click For Summary

Discussion Overview

The discussion revolves around the selection of weights for an infinite set of functions representing temperatures, with an emphasis on achieving a fair and unbiased representation. Participants explore the implications of using equal weights in the context of infinite functions and the statistical properties of such distributions.

Discussion Character

  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant proposes a function of the form F = w1 X1 + w2 X2 + w3 X3 + w4 X4 + ..., questioning what weights would ensure fairness and honesty.
  • Another participant argues that equal weights cannot be applied to an infinite set of variables, suggesting that this is only feasible for finite sets.
  • A request for clarification is made regarding the reasoning behind the impossibility of equal weights for infinite sets.
  • There is a question about the interpretation of "infinite functions" and whether it relates to a limit involving a summation of weights and temperatures.
  • One participant explains that if weights must sum to 1, equal weights would imply each weight is 1/n, which becomes problematic with an infinite number of weights.
  • A participant inquires whether using equal weights implies a distribution that is unbiased or not oriented toward one side.
  • Another participant asserts that for a distribution to be unbiased, all weights must be equal, but reiterates that this is not achievable with an infinite number of outcomes.

Areas of Agreement / Disagreement

Participants express disagreement regarding the feasibility of using equal weights for an infinite set of functions, with some asserting it is impossible while others seek clarification on the reasoning behind this claim. The discussion remains unresolved regarding the implications of weight selection on bias in distributions.

Contextual Notes

Participants highlight limitations related to the summation of weights and the definition of fairness in the context of infinite functions, but do not resolve these issues.

Iraides Belandria
Messages
55
Reaction score
0
Dear people of this forum

Let us suppose we have infinite functions of the form

F= w1 X1 + w2X2+ w3 X3 + w4 X4+...
Where w1,w2,w3, w4 are variable weights and X1, X2, X3, X4 are fixed temperatures.

Now, I have to choose one of the above infinite functions with the requirement that this selected function should be fair, honest, in the sense that it is not preferenced to one side or another . ¿What weigths should I use, w1=w2=w3=w4 ?
 
Physics news on Phys.org
If you have an infinite set of x's, you cannot have equal weights. For a finite set you can.
 
Would you please, explain me why it is so?
 
What do you mean by "infinite functions"? Is it

[tex]\lim_{n\rightarrow\infty}\sum_{k=1}^nw_kX_k[/tex]

?
 
Would you please, explain me why it is so?
Since the weights must sum to 1, if you have n weights, equal means all 1/n. Try to do it with infinite number - you can't. You will have an infinite number of zeros.
 
In relation to my question, If I use equal weights , do this means that, statiscally, we are using a distibution which is not oriented to one side or another, or that it is not biased?
 
Yes, in order that the distribution not be biased toward one outcome, all weights must be equal. As was pointed out before, that is not possible with an infinite number of possible outcomes.
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 15 ·
Replies
15
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 2 ·
Replies
2
Views
9K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 6 ·
Replies
6
Views
7K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 4 ·
Replies
4
Views
3K