Can anyone tell me where this term in this expression came from?

[strange gull]

It seems to only sum the frequencies. I am not sure where it came from

[vagrant radish]

<@&987246717831381062> please have a look, thanks.

[vagrant radish]

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[gleaming phoenix]

didnt u ask that already a few weeks back and i explained it?

i remember showing u the math step by step

[strange gull]

Yes I didn't understand it

[gleaming phoenix]

well, instead of literally asking the same again, why dont u provide the previous info u got, link to it, and explain in detail what remains unclear

[strange gull]

I get the left and right subtree part

[gleaming phoenix]

otherwise ur wasting everyones and ur own time by just getting the same explajnation again

there we gop

#1056466326161461278 message

re read the explanation

and then come back with a more specific question please

i mean, i literally explained precisely this part

https://i.imgur.com/OABo1YL.png

[vagrant radish]

Closed the thread due to inactivity.

If your question was not resolved yet, feel free to just post a message to reopen it, or create a new thread. But try to improve the quality of your question to make it easier to help you 👍

[strange gull]

How is the first sum equal to just 1?

[gleaming phoenix]

it is not

if u do the math, as explained above, u will have 1 in each step and that sums up per frequency

u know, foo * (1 + x) is foo + foo*x

did u finally make the concrete example with real numbers and a real tree?

as i told u 4 times

[strange gull]

Okay will try to understand; I have not yet since I am trying to understand where the equation is coming from 🤔

[gleaming phoenix]

ull understand it once u do the example

[strange gull]

Will it be possible to show how to derive the expanded equation from initial equation algebraically? And commentary. I am not sure how to do the math 🤔

[gleaming phoenix]

i refuse to help u before u make a concrete example

thats the easiest way to learn this and for some odd reason u just dont want to do it

[vagrant radish]

Closed the thread due to inactivity.

If your question was not resolved yet, feel free to just post a message to reopen it, or create a new thread. But try to improve the quality of your question to make it easier to help you 👍

[strange gull]

I read the explanation again; I would like to ask why the cost of the root node is still the sum of the frequencies for all keys? In the first term it starts from i=1 up to n

Why is it not a constant multiplied by its frequency?

[gleaming phoenix]

i refuse to help u before u make a concrete example
thats the easiest way to learn this and for some odd reason u just dont want to do it

either do that or u have to wait for someone else to help

[strange gull]

I think I have found the answer here: