This document discusses the greedy algorithm approach and the knapsack problem. It defines greedy algorithms as choosing locally optimal solutions at each step in hopes of reaching a global optimum. The knapsack problem is described as packing items into a knapsack to maximize total value without exceeding weight capacity. An optimal knapsack algorithm is presented that sorts by value-to-weight ratio and fills highest ratios first. An example applies this to maximize profit of 440 by selecting full quantities of items B and A, and half of item C for a knapsack with capacity of 60.
Knapsack problem ==>>
Given some items, pack the knapsack to get
the maximum total value. Each item has some
weight and some value. Total weight that we can
carry is no more than some fixed number W.
So we must consider weights of items as well as
their values.
Knapsack problem ==>>
Given some items, pack the knapsack to get
the maximum total value. Each item has some
weight and some value. Total weight that we can
carry is no more than some fixed number W.
So we must consider weights of items as well as
their values.
Hashing is the process of converting a given key into another value. A hash function is used to generate the new value according to a mathematical algorithm. The result of a hash function is known as a hash value or simply, a hash.
https://github.com/ashim888/dataStructureAndAlgorithm
Stack
Concept and Definition
• Primitive Operations
• Stack as an ADT
• Implementing PUSH and POP operation
• Testing for overflow and underflow conditions
Recursion
• Concept and Definition
• Implementation of:
¬ Multiplication of Natural Numbers
¬ Factorial
¬ Fibonacci Sequences
The Tower of Hanoi
We are given n distinct positive numbers (weights)
The objective is to find all combination of weights whose sum is equal to given weights m
State space tree is generated for all the possibilities of the subsets
Generate the tree by keeping weight <= m
Part B CS8391 Data Structures Part B Questions compiled from R2008 & R2013 to help the students of Affiliated Colleges appearing for Ann University Examination
This Presentation will Use to develop your knowledge and doubts in Knapsack problem. This Slide also include Memory function part. Use this Slides to Develop your knowledge on Knapsack and Memory function
Hashing is the process of converting a given key into another value. A hash function is used to generate the new value according to a mathematical algorithm. The result of a hash function is known as a hash value or simply, a hash.
https://github.com/ashim888/dataStructureAndAlgorithm
Stack
Concept and Definition
• Primitive Operations
• Stack as an ADT
• Implementing PUSH and POP operation
• Testing for overflow and underflow conditions
Recursion
• Concept and Definition
• Implementation of:
¬ Multiplication of Natural Numbers
¬ Factorial
¬ Fibonacci Sequences
The Tower of Hanoi
We are given n distinct positive numbers (weights)
The objective is to find all combination of weights whose sum is equal to given weights m
State space tree is generated for all the possibilities of the subsets
Generate the tree by keeping weight <= m
Part B CS8391 Data Structures Part B Questions compiled from R2008 & R2013 to help the students of Affiliated Colleges appearing for Ann University Examination
This Presentation will Use to develop your knowledge and doubts in Knapsack problem. This Slide also include Memory function part. Use this Slides to Develop your knowledge on Knapsack and Memory function
Optimization problems can be divided into two categories, depending on whether the variables are continuous or discrete:
An optimization problem with discrete variables is known as a discrete optimization, in which an object such as an integer, permutation or graph must be found from a countable set.
A problem with continuous variables is known as a continuous optimization, in which an optimal value from a continuous function must be found. They can include constrained problems and multimodal problems.
Given two integer arrays val[0...n-1] and wt[0...n-1] that represents values and weights associated with n items respectively. Find out the maximum value subset of val[] such that sum of the weights of this subset is smaller than or equal to knapsack capacity W. Here the BRANCH AND BOUND ALGORITHM is discussed .
Dynamic Programming is a method for solving a complex problem by breaking it down into a collection of simpler subproblems, solving each of those subproblems just once, and storing their solutions using a memory-based data structure (array, map,etc).
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
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Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
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Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
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Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
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Fractional Knapsack Problem
1. GANDHINAGAR INSTITUTE OF TECHNOLOGY
Computer Engineering Department
ADA (2150703)
Fractional knapsack problem
Prepared By:
Harsh Kothari
(170120107066)
Guided By:
Prof. Kiran Shah
2. Contents:
What is greedy approach?
Greedy Algorithms and techniques.
Knapsack problem.
Knapsack Algorithm.
Example of Knapsack problem.
3. Greedy Algorithms:
• Many real-world problems are optimization problems in that they
attempt to find an optimal solution among many possible
candidate solutions.
• An optimization problem is one in which you want to find, not just a
solution, but the best
solution
• A “greedy algorithm” sometimes works well for optimization problems
• A greedy algorithm works in phases. At each phase: You take the best
you can get right now, without regard for future consequences.You hope
that by choosing a local optimum at each step, you will end up at a
global optimum.
4. • Constructs a solution to an optimization problem piece by
• piece through a sequence of choices that are:
1.feasible, i.e. satisfying the constraints.
2.locally optimal (with respect to some neighborhood definition).
3.greedy (in terms of some measure).
Greedy Technique:
5. Knapsack Problem:
• Given n objects each have a weight wi and a value vi , and given
a knapsack of total capacity W. The problem is to pack the
knapsack with these objects in order to maximize the total value
of those objects packed without exceeding the knapsack’s
capacity.
• More formally, let xi denote the fraction of the object i to be
included in the knapsack, 0
xi 1, for 1 i n. The problem is to find values for the xi
such that
n n
xivi
i1
xi wi
i1
is maximized. W and
6. The optimal Knapsack Algorithm:
This algorithm is for time complexity O(n lgn))
(1) Sort the n objects from large to small based on the ratios vi/wi . We
assume the
arrays w[1..n] and v[1..n] store the respective weights and
values after sorting.
(2) initialize array x[1..n] to zeros.
(3) weight = 0; i = 1
(4) while (i n and weight < W) do
(I) if weight + w[i] W then x[i] = 1
(II) else x[i] = (W – weight) / w[i]
(III) weight = weight + x[i] * w[i]
(IV) i++
7. Example of Knapsack problem:
Let us consider that the capacity of the knapsack W = 60 and the list
of provided items are shown in the following table −
Item A B C D
Profit 280 100 120 120
Weight 40 10 20 24
Ratio 7 10 6 5
As the provided items are not sorted. After sorting, the items are as shown in the
following table.
Item B A C D
Profit 100 280 120 120
Weight 10 40 20 24
Ratio 10 7 6 5
8. After sorting all the items, First all of B is chosen as weight
of B is less than the capacity of the knapsack.
Next, item A is chosen, as the available capacity of the knapsack
is greater than the weight of A.
Now, C is chosen as the next item. However, the whole item
cannot be chosen as the remaining capacity of the knapsack is
less than the weight of C.
Hence, fraction of C (i.e. (60 − 50)/20) is chosen.
Solution:
9. Now, the capacity of the Knapsack is equal to the selected items.
Hence, no more item can be selected.
The total weight of the selected items is
10 + 40 + 20 * (10/20) = 60
And the total profit is
100 + 280 + 120 * (10/20) = 380 + 60 = 440
This is the optimal solution. We cannot gain more profit
selecting any different combination of items.
Cont.
Item A B C D
Selected 1 1 0.5 0