logic

I'm working with a couple of AI algorithms at school and I find people use the words Fuzzy Logic to explain any situation that they can solve with a couple of cases. When I go back to the books I just read about how instead of a state going from On to Off it's a diagonal line and something can be in both states but in different "levels". I've read the wikipedia entry and a couple of tutorials and even programmed stuff that "uses fuzzy logic" (an edge detector and a 1-wheel self-controlled robot) and still I find it very confusing going from Theory to Code... for you, in the less complicated

The program needs to read the values of three coordinates P1(x1,y1) P2(x2,y2) P3(x3,y3) as well as another coordinate P(x,y) and determine whether this point is inside a triangle formed from the 3 point above. The proper way to do this is by calculating the barycentric coordinates of the fourth point given the three points of your triangle. The formula to compute them is given at the end of the section "Converting to barycentric coordinates", but I hope to provide a less mathematics-intense explanation here. Assume, for simplicity, that you have a struct, point , that has values x and y . You

This code cannot stop looping even when I enter n or N. What is causing this? char next = ""; printf("Do u want continue\n"); scanf("%c", &next); getchar(); do { if (next=='y' ||next=='Y') { selection(); } else { printf("invalid Please Enter again"); scanf("%c", &next); } } while (next !='n'|| next!='N') The conditional (next !='n'|| next!='N') is always true. If next is 'n' then next!='N' is true making the whole expression true. Similarly, if next is 'N' then next!='n' is true again making the whole expression true. What you want here is to use a logical AND && : } while (next !='n' && next!

After I run the code in matlab, I encounter this error and unsure how to solve it. How can I solve this problem. Warning: Operands to the || and && operators must be convertible to logical scalar values. Jgray = double(rgb2gray(J)); % Calculate the Gradients [dIx, dIy] = gradient(Jgray); if max(dIx)<=103 && max(dIy)<=100 B = abs(dIy) - abs(dIx); else B = abs(dIx) - abs(dIy); end user1083059 If dIx and dIy are matrices (as opposed to 1-D vectors), max(dIx) and max(dIy) will return vectors. && and || should be used to compare scalars, not vectors. You probably want to type if max(dIx(:))<=103 &&

What would be the approach to a kind of problem that sounds like this: A says B lies B says C lies D says B lies C says B lies E says A and D lie How many lie and how many tell the truth? I am not looking for the answer to the problem above, but the approach to this kind of problem. Thanks a lot. A -> !B B -> !C D -> !B C -> !B E -> !A & !D Reminder: X -> Y <=> !X | Y Transform the 5 equations into logical propositions, and you will find answers. To solve equations of the form X 1 = NOT X 3 X 5 = NOT X 2 etc Form a graph with nodes as X i and connecting X i and X j iff the equation X i = NOT X