-
Home
- Elec 301 projects fall 2015
- Handwritten digit recognition
- Advantages of convolution
This module outlines the advantages of adding convolutional and pooling layers to a standard neural network for applications of image recognition.
The main motivation behind using convolutional layers is that it is typically true of images that pixels in close proximity are more related with each other than with pixels that are a greater distance away. Thus, compared to fully connected layers, convolutional layers give a better indication of general features that appear in an image by taking advantage of this spatial structure of images.
Shift invariance
A major shortcoming of fully interconnected networks is their dependence on position of a feature in an image. Such a network would recognize an image, but not its slightly shifted self. Training shift invariance in a fully connected is network is possible, and involves extensive expansion of training data, but it’s significantly more efficient to use convolution, which naturally has this property. Convolutional layers detect a given feature, regardless of its position on an image. Because the MNIST data set is centered and normalized, a fully connected network can still work, but a network with convolutional layers is able to handle data that is not properly centered or normalized.
Computationally efficient
Another consequence of using convolutional networks is that there are fewer parameters involved, making the network more computationally efficient to train. For any given neuron in a fully connected hidden layer, there is a weight and a bias associated with each neuron in the previous layer, and as such, the number of parameters scale as the number of neurons squared, assuming a similar number of neurons in each interconnected layer. This makes it incredibly difficult and computationally inefficient to implement deep neural networks consisting of only fully connected layers. Convolutional layers by contrast only have 1 bias per kernel and 1 weight for each pixel of each kernel. A neuron in the following layer is only connected to the number of neurons specified by the size of the kernel. Now instead of scaling as n squared, parameters scale as the number of kernels times the size of each kernel.
Questions & Answers
how does Neisseria cause meningitis
is the branch of biology that deals with the study of microorganisms.
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
How bacteria create energy to survive?
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
which site have a normal flora
Many sites of the body have it
Skin
Nasal cavity
Oral cavity
Gastro intestinal tract
Safaa
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Binomial nomenclature
adeolu
Got questions? Join the online conversation and get instant answers!
Source:
OpenStax, Elec 301 projects fall 2015. OpenStax CNX. Jan 04, 2016 Download for free at https://legacy.cnx.org/content/col11950/1.1
Google Play and the Google Play logo are trademarks of Google Inc.
