Download presentation

Presentation is loading. Please wait.

Published byGillian Lunt Modified over 3 years ago

1
Artificial Intelligence By Mr. Ejaz http:-owaiscomsian.wordpress.com/ CIIT Sahiwal

2
Artificial Intelligence Course outline Introduction Problem solving Generic algorithms Knowledge Representation and Reasoning Expert Systems Uncertainty Learning Planning Advanced topics in AI CIIT Sahiwal

3
Artificial Intelligence Problem Solving and Search Muhammad Ejaz CIIT Sahiwal

4
Problem Solving The mechanism to find the goal performing some actions to transit from one state to another is known as problem solving. Initial state Operator: description of an action State space: all states reachable from the initial state by any sequence action Path: sequence of actions leading from one state to another Goal test: which the agent can apply to a single state description to determine if it is a goal state Path cost function: assign a cost to a path which the sum of the costs of the individual actions along the path. CIIT Sahiwal

5
Different types of problem Well structured problems When problem description and its rules are described clearly and unambiguously. Ill structured problem No extra information about the problem other than the definition No extra information No heuristics (rules) Well structured problems When problem description and its rules are described clearly and unambiguously. Ill structured problem No extra information about the problem other than the definition No extra information No heuristics (rules) CIIT Sahiwal

6
Well Defined Problems Finding the maximum from a sequence of integers. Eight puzzle 1,2 or 2,1 puzzle Farmer and goose problem Water pouring problem CIIT Sahiwal

7
Eight puzzle CIIT Sahiwal

8
Water Pouring Problem CIIT Sahiwal

9
Farmer and goose problem W F ~ W F G F W F G ~ G F ~ W C W C C ~ G F G ~ C F ~ W C F ~ C F W W G ~ G G ~ G C C C F C W ~ G W CIIT Sahiwal

10
Think Point What will be tree representation of Farmer and goose problem? CIIT Sahiwal

11
Searching For Solutions Having formulated some problems…how do we solve them? Search through a state space Use a search tree that is generated with an initial state and successor functions that define the state space CIIT Sahiwal

12
Different search techniques Uninformed Search Only the information available in the problem definition – Also known as blind searching -Breadth-first search -Depth-first search -Depth-limited search -Iterative deepening search Informed Search When sufficient information is provided to reach the goal. CIIT Sahiwal

13
Breadth-First Search Recall from Data Structures the basic algorithm for a breadth-first search on a graph or tree Expand the shallowest unexpanded node Place all new successors at the end of a FIFO queue CIIT Sahiwal

14
Breadth-First Search CIIT Sahiwal

15
Breadth-First Search CIIT Sahiwal

16
Breadth-First Search CIIT Sahiwal

17
Breadth-First Search CIIT Sahiwal

18
Depth-First Search Recall from Data Structures the basic algorithm for a depth-first search on a graph or tree Expand the deepest unexpanded node Unexplored successors are placed on a stack until fully explored CIIT Sahiwal

19
Depth-First Search CIIT Sahiwal

20
Depth-First Search CIIT Sahiwal

21
Depth-First Search CIIT Sahiwal

22
Depth-First Search CIIT Sahiwal

23
Depth-First Search CIIT Sahiwal

24
Depth-First Search CIIT Sahiwal

25
Depth-First Search CIIT Sahiwal

26
Depth-First Search CIIT Sahiwal

27
Depth-First Search CIIT Sahiwal

28
Depth-First Search CIIT Sahiwal

29
Depth-First Search CIIT Sahiwal

30
Depth-First Search CIIT Sahiwal

Similar presentations

OK

Lecture 3: 18/4/1435 Searching for solutions. Lecturer/ Kawther Abas 363CS – Artificial Intelligence.

Lecture 3: 18/4/1435 Searching for solutions. Lecturer/ Kawther Abas 363CS – Artificial Intelligence.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To ensure the functioning of the site, we use **cookies**. We share information about your activities on the site with our partners and Google partners: social networks and companies engaged in advertising and web analytics. For more information, see the Privacy Policy and Google Privacy & Terms.
Your consent to our cookies if you continue to use this website.

Ads by Google

Ppt on cyclone in india Ppt on gunn diode oscillators Ppt on steps to scan Ppt on shell scripting youtube Ppt on new stone age Ppt on plants for grade 2 Ppt on save environment paintings Ppt on review of literature outline Make appt online Presentations ppt online maker