Markov model on a sequence of numbers

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Discussion Overview

The discussion revolves around applying a Markov model to a lottery machine generating a sequence of numbers from 0 to 9, with a focus on calculating the sum of probabilities for reaching an end state after a series of transitions. The scope includes theoretical modeling and mathematical reasoning related to Markov chains.

Discussion Character

  • Exploratory, Technical explanation, Mathematical reasoning

Main Points Raised

  • One participant describes a lottery machine generating numbers and seeks to model the appearance of each number using a Markov chain, with specific interest in the probability of reaching an end state.
  • Another participant asks for clarification on whether the sum of probabilities refers to transition points or final events.
  • A subsequent reply confirms the interest in finding the sum of probabilities at the final transition.
  • One participant suggests using a series of transition matrices to calculate the sum, mentioning the need to account for double counting of events.
  • Another participant proposes using permutations and combinations as a potentially easier and approximate method to solve the problem.

Areas of Agreement / Disagreement

Participants express different approaches to calculating the sum of probabilities, with no consensus on the best method or resolution of the problem.

Contextual Notes

There are unresolved aspects regarding the specific definitions of probabilities and the assumptions underlying the proposed methods, such as the initial probability vector and the treatment of intersections in events.

iheadset
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Dear Sir,
Assuming that my lottery machine can generate 10 numbers (0..9), in which 0 and 9 are supposed to be starting and ending states of my Markov chain. I apply Markov chain to model each number appearance because I would want to modify the random generation process into, say, my own process, such that each currently output number will show up in dependence of the previously generated number.
Now I would like to run my generator 1000 times and given the probability for any number to reach the end state is x, how can I calculate the sum of probabilities of all integral sequences then ?
Thank you Sir.
 
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Hey iheadset.

When you say sum of probabilities do you mean the sum of them at each transition point or the sum of events at the final transition?
 
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chiro said:
Hey iheadset.

When you say sum of probabilities do you mean the sum of them at each transition point or the sum of events at the final transition?
Yes, that is right Sir. I would like to find that sum.
 
That means you are looking at a T + T^2 + T^3 + ... + T^n matrix to find the sum of these transition matrices.

If you supply an initial probability as your vector and apply it to the above sum there is only one more thing to do - which is to find intersections in events and remove them as they will be "double counted".

You will probably have to resort to the Markov property to do this and generate identities which you can use to find them.
 
'You can try permutation and combinations'. I think it is the easiest method to solve the problem and also you get approximate method. You can try this.
 

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