MATRICES & USES [ R.S.S KAMALAWARNA - SS/2011/0401 ]
INTRODUCTION
There are many uses for matrices in every day. One example of how matrices can be
used is with encryption. When a programmer encrypts or codes a message, he can
use matrices and their inver

1. Purpose of implementing an information System in an organization
All companies use information to set strategies and accomplish business objectives. But how many CEOs
and CIOs would say they are satisfied that their companies get maximum value from inf

1. Importance of information system in an organization
To gain the maximum benefits from your company's information system, you have to exploit all its
capacities. Information systems gain their importance by processing the data from company inputs to
gen

INTRODUCTION
Computers! Amazing machines! We are living in the computer age today. Most of our day-to-day
activities cannot be accomplished without using computers. Sometimes knowingly and
sometimes unknowingly we use computers. Whether we have to withdra

Differences Between OLS and MLE
We often try to vanish when the topic is about statistics. For some, dealing with
statistics is like a terrifying experience. We hate the numbers, the lines, and the
graphs. Nevertheless, we need to face this great obstacle

Advantages of Maximum likelihood Method
Maximum likelihood provides a consistent approach to parameter estimation
problems. This means that maximum likelihood estimates can be developed for
a large variety of estimation situations. For example, they can

Maximum Likelihood Methodology
Many statistical techniques were invented in the nineteenth century by experimental
scientists who personally applied their methods to authentic data sets. In these
conditions the limits of what is computationally feasible a

Principals of likelihood Method
Suppose there is a sample x1, x2, , xn of n independent and identically distributed
observations, coming from a distribution with an unknown probability density function f0().
It is however surmised that the function f0 bel

Definition of Maximum likelihood Method
A statistical method for estimating population parameters (as the mean and variance)
from sample data that selects as estimates those parameter values maximizing the
probability of obtaining the observed data.
In st

1. What is System Development Life Cycle?
System Development Life Cycle (SDLC) is a series of six main phases to create a hardware system only, a
software system only or a combination of both to meet or exceed customers expectations.
System is a broad and