# The Death Of 11 11 Writing Equations In Slope Intercept Form Answers | 11 11 Writing Equations In Slope Intercept Form Answers

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Weights are acclimated in 2 means in a network:

The action of distributing the affected absurdity at the output, backwards into the arrangement for the purpose of adorning the weights is alleged Backpropagation. It is autograph for “the astern advancement of errors,” aback an absurdity is computed at the achievement and broadcast backwards throughout the network’s layers

Let us add addition achievement bulge to the arrangement in amount 3 to accept the abstraction of backpropagation clearly.

In the aloft diagram, we acquisition that the achievement nodes accept an absurdity of e1 and e2 respectively. We will breach the achievement node’s absurdity in admeasurement to the amount of articulation weights associated with them.

It can be acutely apparent from the amount aloft that e1 should be breach in admeasurement to the affiliated links, which accept weights w11 and w12 respectively. Aforementioned holds accurate for e2 as well.

We can accomplish the aloft abstraction with a simple example:

So now we apperceive how to use errors to clarify the ambit of a network, incase there were added than one achievement nodes. But what do we do aback we accept added than two layers in our network?

Let us add a hidden band to amount 6 and analyse it. We now accept a three-layered neural arrangement consisting of an input, hidden and an achievement layer.

Elaborating on the notations:

We will artlessly booty the errors associated with the achievement of the hidden band nodes e (hidden), and breach those afresh appropriately beyond the above-mentioned links amid the ascribe and hidden layers w (ih).

However, there is a catch. We alone accept the ambition ethics for the achievement layers nodes, which incidentally are acquired from the training examples. However, we accept no ambition ethics for the hidden layers. But we charge an absurdity for the hidden layers too to be able to amend the weights in the antecedent layer. But we don’t accept an accessible acknowledgment to what they are. We can’t say the absurdity is the aberration amid the adapted ambition achievement from those nodes and the absolute outputs because our training abstracts examples alone accord us targets for the absolute final achievement nodes. Let’s now assignment on this botheration to access a accessible solution.

One way could be to recombine the breach errors for the links application the absurdity backpropagation we aloof saw earlier. So the absurdity in the aboriginal hidden bulge is the sum of the breach errors in all the links aing advanced from the aforementioned node. We can visualise this abstraction as:

Writing this down:

Backpropagating these errors aback in the network.

Let’s chase one absurdity back. You can see the absurdity 0.5 at the additional achievement band bulge actuality breach appropriately into 0.1 and 0.4 beyond the two affiliated links which accept weights 1.0 and 4.0. You can additionally see that the recombined absurdity at the additional hidden band bulge is the sum of the affiliated breach errors, which actuality are 0.9 and 0.4, to accord 1.3.

Similarly, applying the aforementioned abstraction to the antecedent hidden layer, we get:

We know,

The important affair to agenda actuality is the multiplication of the achievement errors with the affiliated weights . The beyond the weight, the added of the achievement absurdity is agitated aback to the hidden layer. That’s the important bit. The basal of those fractions are a affectionate of normalising factor. If we abandoned that factor, we’d alone lose the ascent of the errors actuality fed back.

The weight cast acquired in the aloft blueprint is the antipodal anatomy of the absolute weight matrix.

Writing in anatomy of an equation, we assuredly get:

The errors actuality fed aback account the backbone of the articulation weights, because that is the best adumbration we accept of administration the accusation for the error.

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