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# rrlangly

Member Since 05 Mar 2012
Offline Last Active Apr 21 2016 12:15 AM

### In Topic: math required for Adaline neural network

27 January 2013 - 03:33 PM

And what areas/courses would this mostly be taught under so I can find the books to study in-depth?

### In Topic: math required for Adaline neural network

21 January 2013 - 04:08 PM

I'd have to say no.

### In Topic: math required for Adaline neural network

20 January 2013 - 07:04 PM

I understand this conceptually from reading high-level descriptions, but I think I need to get to the point where I can work out a problem and see it through. So the answer is no.

### In Topic: trying to plot linear equation

30 July 2012 - 08:51 PM

You are correct, it is in a loop and generates random points from -1 to 1, and then this linear function is used to "categorize" the data.

To answer the "y1 ignore", I should have put this after the line "y1 = " (which I think tells me what side of the line the point is on).

```	if (y < y1)
output = 1;
else
output = -1;
```

I substitued x = -1 and x = 1 and got these results, but I don't think I'm doing this correctly.
```y1 = (-5 * x - 2) / -4
y1 = (-5 * -1 - 2) / 4
y1 = (5 -2) / -4
y1 = 3/-4

y1 = (-5 * x - 2) / -4
y1 = (-5 * 1 -2) / -4
y1 = (-5 -2) / -4
y1  = -7/-4
```

I'm trying to learn simple neural nets. I'm just not good at math but I can see I have to start somewheres.

### In Topic: help calculating G cost of A* algorithm

18 March 2012 - 07:45 PM

I see my path taking shape, but trying to debug areas where the parent is wrong.

If a better path was found because it has a lower G cost, and then after G, H, and F scores along w/ its parent has been updated ... do I then drop it from the open list to closed list? Or does a better path found mean that better path node stays on the open list?

So far the only time I see that I ever drop a node from the open to closed list is when a node is checked for the low F score. And up until my path is screwed up, I can see when I backtrace for parent nodes, they're all on the closed list. So my path looks good from the start to point of screw-up and all those nodes are on the closed list. At the point of screwup, I see nodes on the open list.

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