3 Decision Tree | ID3 Algorithm | Solved Numerical Example by Mahesh Huddar

3 Decision Tree – ID3 Algorithm Solved Numerical Example by Mahesh Huddar

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[padelis_doulis]

you have a mistake at Gain(s, a1) at 3:50, it should be (-5/10) * 0 and not (05/10)*1 since E(Sfalse)=0.0(result is right tho, you just misspelled). Other than that, nicely explained, learnt how this works thanks to your vids.

[techfort]

Dear Mahesh sir,
If I'm not wrong then At 10:30 the Entropy (S) must be 0.7219 .
And Gain(S, A3) answer would be 0.7219-0-0=0.7219.

Thank you

[VamshiChaithanya]

At 9:46, Entropy(S) should be 0.7219 right ? SO the answer must be 0.7219-0.6486=0.07294 . Kindly someone correct me if wrong

[ramyasrikanteswara]

Entropy values of false in a1 is zero but while calculating final value you have taken it as 1

[ayushmanbhargabagopalbiswas]

Love you sir, it's help in our semester exam❤

[emmanuellafakonyui]

Thank you so much for this video. I really do appreciate. It's amazing how explicit you made it and very understandable too. I was able to finish my assignment in a short interval (zero stress)

[quangminhtran]

Tks sir, It''s help me so much in my semester exam

[kushalsharma]

The guys confused on how to put log base 2 in the calc. In most calcs u can not directly put log base 2 but instead u can find it out by for example: Find log base 2 of 5, it can be done by: (log 5 )/ (log2) where the log is in base 10

[johnrooney]

is it okay to leave a2 out of the tree?

[yourbrother]

If there is equal gain, which one we have to consider for next node??

[santoshvadisala]

Correct me if I am wrong, but I wonder where is the numerical data in this dataset? every feature is categorical rt ?

[thegeethaart]

Sir plz can you solve even last year dec2019/jan2020 paper problems

[miklospoth]

Instances 1 and 2 are the same, also 4 and 5 are the same. Shouldn't we merge them into one single instance?

[vinayg]

Sir can u just say wic entropy value must be consider after dividing table in above example should we consider entropy(true) r intial entropy

[alimuddinkhan]

finally a1 —sir you are put false=1 this wrong
please sir correction false = 0

[sravanr]

Today I got this question only in the exam but I seen yesterday and Today only that 23 minutes video that's it