AI, Datamining, Databases

Question 1

AI

Answer 1

Study how to create rational, intelligent agents

-ability of the agent to perform a task in an intelligent manner

Question 2

Machine learning

Answer 2

• sub-area of AI that aims at giving agents the ability to acquire new knowledge
• the usefulness of a new knowledge is measure with respect of its influence on the overall performance measure

Question 3

Data mining

Answer 3

-usually performed by a human on specific dataset (that is too big or complex to be analyzed by hand, to specific end
Eg give preliminary insight, discover a pattern, extract information, verify assumptions, or try to predict the future
Studying and learning through
-example problems and solutions
-acquired knowledge
-observations

Question 4

What is intelligence

Answer 4

• the ability to learn or understand or to deal with new or trying situations
• the skill of reason
• the ability to apply knowledge to manipulate ones environment or to think abstractly as measured by objective criteria

Question 5

John McCarthy

Answer 5

Father of AI

Question 6

Who is seen as the first to star working on AI

Answer 6

Alan Turing is seen as the first

-he suggested that AI was best researched by programming computers rather than by building machines

Question 7

Rational agents

Answer 7

• anything that can perceive it’s environment through sensors and acts upon that environment through effectors
• will always choose the action that maximizes the expected value of the performance measure given the perception sequence to date

Question 8

Performance measure of agent

Answer 8

It is the criteria which determines how successful an agent is

Question 9

Perception

Answer 9

It is agents perceptual inputs at a given instance

Question 10

Perception sequence

Answer 10

It is the history of all that an agent has perceived till date

Question 11

Behaviour of agent

Answer 11

It is the action that agent performs after any given sequence of precepts

Question 12

Agent function

Answer 12

It is a map from the precept sequence to an action

Question 13

Search

Answer 13

Systematic exploration of alternatives for reaching a goal

Question 14

A problem if defined by four items

Answer 14

1. Initial state
2. Actions
3. Goal test
4. Path cost

Question 15

Solution

Answer 15

Is a sequence of actions leading from the initial state to goal state

Question 16

Human logic

Answer 16

• humans are information processors

- our strength is the ability to represent and manipulate logical information

Question 17

Learning

Answer 17

Three different problems being involved in learning

• memory
• averaging
• generalization

Question 18

Two categories in data mining

Answer 18

Predictive tasks

• classification (walk, drive,fraud)
• regression (education, race , age)

Descriptive tasks

• association discovery (bagel, cream cheese)
• clustering (classical, hip hop)

Question 19

Predictive data mining

Answer 19

Goal: identify, estimate, or predict a class to previously unseen records as accurately as possible 
-find a model for the class attribute as a function of the values of the other attributes

Question 20

Dataset

Answer 20

•Ground truth
-labeled dataset

•training set

• subset of the labeled dataset
• used to learn the model

•testing set
-portion of the dataset not used in building the model used to evaluate the model

Question 21

Confusion matrix

Answer 21

Predicted
| Pos | Neg
———————
Actual Positive | TP | FN
Negative | FP | TN

Question 22

Database systems

Answer 22

Provide a way of separating the data user from the data itself, with an interface that allows data operations to be performed easily and efficiently

Question 23

Database management system

Answer 23

Provides a mechanism for data storage, manipulation and retrieval

Question 24

Relational database

Answer 24

Classifies data into relations, which are normally called tables. The entries of a table are rows or records

Question 25

SQL

Answer 25

Structured query language