Depth First Search

The simplest version of depth first search, how it gets stuck in loops and how to fix this using simple loop checking on the path.

[@Jajdjejwi28]

lmao 2 hours lecture at my uni is summed up perfectly here in 7 minutes. Amazing!

[@sofuno863]

somehow this english accent makes me feel smart when I listen to it lol amazing!

[@TheMcallist1]

hahaha

[@robinkarlsson1460]

Trying to explain this to a friend and your description of the algorithm in terms of a decision tree was brilliant. Makes things super clear (why we keep track of visited becomes self evident)! Great video 👍

[@TrangPham-kc7ft]

Thank you so much for your explanation about DFS search tree, I've always get stuck at it but now it's more clearly

[@jordan4890]

Really nice videos man. I'm using search to derive equations in physics as a newcomer to CS. Your videos have helped immensely as a noob to CS research

[@pedrolopes9721]

Thank for your videos, my theory classes are really bad, and your youtube videos are saving, literally my life!

[@wrightkuku8811]

this guy is underrated. he deserves a million subscribers and billion views

[@iq_pi7211]

Finally I found a Dr. That deserve the title The AI Dr. In my college is all over the place She makes the easiest thing hard to understand

[@ahmedibrahim-ro3sj]

sir you are great ,hope you going to continue uploading more videos , have never seen someone illustrate in that simple and precise way

[@RajVerma-lg3kp]

My teacher should be fired 😂... Thank you so much

[@manikantamaddipati4861]

great explanation John Levine

[@telmagiovana6006]

Thank you, best explanation! Wish I had watched your videos before

[@omarsheekhoo9205]

Thank u so much, I finally understood the DFS and also for saving me from all of these Indians.

[@sigqibotshapha9950]

would've been neat to know the order of traversing the child nodes beforehand. also in an actual programming stack, we would have to add the child nodes(i.e expand) in reverse order such that our topmost node after each expansion is the next first node (i.e when expanding S start by adding D to the stack, then B then A such that A is at the top of the stack), so we should draw the tree down towards the right not left, same thing just on opposite sides. I'm terrible at explanations but I picked this up from your video which means it's great

[@manuelacquistapace8030]

Amaizingly explained, thanks a lot

[@hazemabuaqolah9206]

SUPER!! thank you for awesome presentation.

[@rafifelfazri3284]

Thank you, it really helps me with my homework

[@tzaswit]

Thank you, really helpful

[@geoffreyvanwyk4588]

After expanding A, should you not have stopped at G1?

[@saraharar3114]

thank you so much ! incredible

[@f_1289]

youre a life saver ❤️❤️

[@zenitsuzang9506]

I feel very understandable - exactly what I am looking for

[@chandanagubbiparamesha904]

Awesome!!..please make more videos

[@azarku]

THANK you !

[@nadaali5]

i love your way thank u

[@sqlyoutuber8230]

Thank you

[@samsricatjaidee405]

Thank you.

[@maksymkoval9816]

More like A+ for those tutorials

[@maryameslam3782]

thank you

[@dilantaskn928]

Probably with these tutorials I learned AI algorithms way more than what I learned in class, but since this algorithm is LIFO, shouldn't it start to generate nodes from the D since it is the last one entered into the stack and should be the first one to get out, instead of A?

[@prasundas6531]

Why not go to goal G1 when we are checking if B or G1 has been traversed first?

[@pantepember]

1- In what order do we choose the items at each level? (You choose them in alphabetical order. Why?) 2- You say we treat the items list like a stack then you choose A at the first level. But how did we order them as A, B, and D in the first place? By the way, I really like the way you teach. Thank you.

[@guidodinello1369]

You can use whatever order you want to fill the stack, you will still traverse the entire component but following a different path

[@beone888]

I'm not able to understand in which order he is exploring the node, if there is no order then after exploring A we can explore G1,B then the algo stop at G1 itself, that is the path will be S -> A -> G1

[@ggme7857]

how do you decide the order of the nodes e.g. A B D. Because it really changes things

[@vyomdirt]

Alphabetical order.

[@vincent-uh5uo]

yes it is also my question, if he decided the order is G2, F, S in the forth floor, the algorithm will stop.

[@ravikumarrn8501]

Check out the arrow direction of C. From S u can't go to C.

[@lancelofjohn6995]

why is G1 not removed?

[@halkey4086]

Helal hocam, teşekkürler.

[@annasahebpatil2654]

Is there goal state for bfs nd dfs

[@abdolvakilfazli2488]

After first A, why did you choose B over G1. If you have chosen G1 over B that would be a better depth-first search

[@mohammedshalan9161]

That's also my question! I couldn't figure it out?!

[@stevenpersoon]

This choice is not really specified for depth search. How the algorithm chooses the next is node up for you to decide, as long as it's consistent.

[@tomcolgan]

get a bigger board LOL, ah no all joking aside that was a very good explanation! really enjoyed it

[@isurukottahachchi6156]

Good video but sound is not enough

[@pixelsvuce1572]

Node d is mentioned again..Check the presentation again...Plz....

[@omarzalama]

no it's not, it just appeared, we never expand it (branch it to it's nodes).

[@abrahamjonathan3260]

S,A,B,C,F,G3🤔

[@ahmedwael4293]

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