| Computerized
Paper Evaluation using Neural Network |
Definition
This paper addresses the issue of exam paper evaluation using neural network.
This paper foresees the possibility of using adaptive real time learning through
computers viz. the student is made to feed his answers in a restricted format
to the computer to the questions it puts up and the answers are evaluated instantaneously.
This is accomplished by connecting the computers to a Knowledge Server. This server
has actually connections to various authenticated servers (encyclopedias) that
contain valid information about all the subjects. The information in the server
is organized in a specific manner. The exam is adaptive in the sense that the
computer asks distinct questions to each individual depending upon their specialization.
This paper also analyzes the role of existing neural network models like Adaptive
Resonance Theory (ART), Back Propagation, Perceptron, Self-Organizing Feature
Map (SOFM) can be optimized to implement such an evaluation system. Introduction
Computers have revolutionized the field of education. The rise of internet has
made computers a real knowledge bank providing distanteducation, corporate access
etc. But the task of computers in education can be comprehensive only when the
evaluation system is also computerized. The real assessment of students lies in
the proper evaluation of their papers. Conventional paper evaluation leaves the
student at the mercy of the teachers. Lady luck plays a major role in this current
system of evaluation. Also the students don't get sufficient opportunities to
express their knowledge. Instead they are made to regurgitate the stuff they had
learnt in their respective text books. This hinders their creativity to a great
extent. Also a great deal of money and time is wasted. The progress of distance
education has also been hampered by the non-availability of a computerized evaluation
system. This paper addresses how these striking deficiencies in the educational
system can be removed.
Neural Network
- Basics
An Artificial Neural Network (ANN) is an information processing
paradigm that is inspired by the way biological nervous systems, such as the brain,
process information. The key element of this paradigm is the novel structure of
the information processing system. It is composed of a large number of highly
interconnected processing elements (neurons) working in unison to solve specific
problems. ANNs, like people, learn by example. An ANN is configured for a specific
application, such as pattern recognition or data classification, through a learning
process.
Role of Neural Network:
Tasks
cut out for the neural network:
a. Analyze the sentence written by the student.
b. Extract the major components of each sentence.
c. Search the reference
for the concerned information.
d. Compare the points and allot marks according
to the weightage of that point.
e. Maintain a file regarding the positives
and negatives of the student.
f. Ask further questions to the student in a
topic he is more clear off.
g. If it feels of ambiguity in sentences then
set that answer apart and continue with other answers and ability to deal that
separately with the aid of a staff.
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