The document discusses the convex hull algorithm. It begins by defining a convex hull as the shape a rubber band would take if stretched around pins on a board. It then provides explanations of extreme points, edges, and applications of convex hulls. Various algorithms for finding convex hulls are presented, including divide and conquer in O(n log n) time and Jarvis march in O(n^2) time in the worst case.
Analysis & Design of Algorithms
Backtracking
N-Queens Problem
Hamiltonian circuit
Graph coloring
A presentation on unit Backtracking from the ADA subject of Engineering.
This PPT is all about the Tree basic on fundamentals of B and B+ Tree with it's Various (Search,Insert and Delete) Operations performed on it and their Examples...
Analysis & Design of Algorithms
Backtracking
N-Queens Problem
Hamiltonian circuit
Graph coloring
A presentation on unit Backtracking from the ADA subject of Engineering.
This PPT is all about the Tree basic on fundamentals of B and B+ Tree with it's Various (Search,Insert and Delete) Operations performed on it and their Examples...
Do Not just learn computer graphics an close your computer tab and go away..
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Convex Hull - Chan's Algorithm O(n log h) - Presentation by Yitian Huang and ...Amrinder Arora
Chan's Algorithm for Convex Hull Problem. Output Sensitive Algorithm. Takes O(n log h) time. Presentation for the final project in CS 6212/Spring/Arora.
The Gesture Recognition Technology is rapidly growing technology and this PPT describes about the working of gesture recognition technology,the sub fields in it, its applications and the challenges it faces.
My talk about computational geometry in NTU's APEX Club in NTU, Singapore in 2007. The club is for people who are keen on participating in ACM International Collegiate Programming Contests organized by IBM annually.
Trigonometric Function of General Angles LectureFroyd Wess
More: www.PinoyBIX.org
Lesson Objectives
Trigonometric Functions of Angles
Trigonometric Function Values
Could find the Six Trigonometric Functions
Learn the signs of functions in different Quadrants
Could easily determine the signs of each Trigonometric Functions
Solve problems involving Quadrantal Angles
Find Coterminal Angles
Learn to solve using reference angle
Solve problems involving Trigonometric Functions of Common Angles
Solve problems involving Trigonometric Functions of Uncommon Angles
Geometric Separators and the Parabolic LiftDon Sheehy
We present a simplification of the geometric separator algorithm of Miller and Thurston that uses parabolic lifting rather than stereographic projection. The result entirely eliminates the middle phase of that algorithm, which finds a conformal transformation to arrange the points nicely on the sphere.
ROOT-LOCUS METHOD, Determine the root loci on the real axis /the asymptotes o...Waqas Afzal
Angle and Magnitude Conditions
Example of Root Locus
Steps
constructing a root-locus plot is to locate the open-loop poles and zeros in s-plane.
Determine the root loci on the real axis
Determine the asymptotes of the root loci
Determine the breakaway point.
Closed loop stability via root locus
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
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In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
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Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Le nuove frontiere dell'AI nell'RPA con UiPath Autopilot™UiPathCommunity
In questo evento online gratuito, organizzato dalla Community Italiana di UiPath, potrai esplorare le nuove funzionalità di Autopilot, il tool che integra l'Intelligenza Artificiale nei processi di sviluppo e utilizzo delle Automazioni.
📕 Vedremo insieme alcuni esempi dell'utilizzo di Autopilot in diversi tool della Suite UiPath:
Autopilot per Studio Web
Autopilot per Studio
Autopilot per Apps
Clipboard AI
GenAI applicata alla Document Understanding
👨🏫👨💻 Speakers:
Stefano Negro, UiPath MVPx3, RPA Tech Lead @ BSP Consultant
Flavio Martinelli, UiPath MVP 2023, Technical Account Manager @UiPath
Andrei Tasca, RPA Solutions Team Lead @NTT Data
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
3. How does the rubber band look when it snaps tight?
4. We represent the convex hull as the sequence of points on the convex hull polygon, in counter-clockwise order.By Ravikirankalal
5. Defination Informal definition: Convex hull of a set of points in plane is the shape taken by a rubber band stretched around the nails pounded into the plane at each point Convex hull of a set of points S is the set of all convex combinations of points of S Convex hull of S is denoted by convS, sometimes the notation (S) is also used By Ravikirankalal
6. Extreme Points The extreme points of a set S of points in the plane are the vertices of the convex hull at which the interior angle is less than π Also a point is extreme iff there exists a line through that point that other wise does not touch the convex hull By Ravikirankalal
7. Extreme Edges for each i do for each j ≠ i do for each k ≠ i ≠ j do if pkis not left or on (pi ,pj) then (pi ,pj)isnot extreme There are three nested loops in this algorithm Hence the order is O(n3) For each of the n2 pair of points, the test for extremeness costs n The vertices that are extreme can now be found By Ravikirankalal
8. Applications Computer Visualization, Ray Tracing, Video Games. Geographical Information Systems (GIS) - Computing Accessibility Maps Visual Pattern Matching - Detecting Car License Plates Path Finding - Embedded AI of Mars mission Rovers Replacement of Bounding Boxes By Ravikirankalal
24. Finding the lower tangent in O(n) time 9 3 a = rightmost point of A b = leftmost point of B while T=ab not lower tangent to both convex hulls of A and B do{ while T not lower tangent to convex hull of A do{ a=a-1 } while T not lower tangent to convex hull of B do{ b=b+1 } } 4=b 4 2 3 5 5 a=2 6 1 7 1 0 0 A B By Ravikirankalal
25.
26. Divide the set of points into two sets A and B:
31. Merge the two convex hullsO(1) T(n/2) T(n/2) O(n) By Ravikirankalal
32.
33. Quickhull QuickHull uses a divide and conquer approach similar to the QuickSort algorithm. Benchmarks showed it is quite fast in most average cases. Recursive nature allows a fast and yet clean implementation. By Ravikirankalal
34. Initial input The initial input to the algorithm is an arbitrary set of points. By Ravikirankalal
35. First two points on the convex hull Starting with the given set of points the first operation done is the calculation of the two maximal points on the horizontal axis. By Ravikirankalal
36. Recursively divide Next the line formed by these two points is used to divide the set into two different parts. Everything left from this line is considered one part, everything right of it is considered another one. Both of these parts are processed recursively. By Ravikirankalal
37. Max distance search To determine the next point on the convex hull a search for the point with the greatest distance from the dividing line is done. This point, together with the line start and end point forms a triangle. By Ravikirankalal
38. Point exclusion All points inside this triangle can not be part of the convex hull polygon, as they are obviously lying in the convex hull of the three selected points. Therefore these points can be ignored for every further processing step. By Ravikirankalal
39. Recursively divide Having this in mind the recursive processing can take place again. Everything right of the triangle is used as one subset, everything left of it as another one. By Ravikirankalal
40. Abort condition At some point the recursively processed point subset does only contain the start and end point of the dividing line. If this is case this line has to be a segment of the searched hull polygon and the recursion can come to an end. By Ravikirankalal
41. Running time The running time of Quickhull, as with QuickSort, depends on how evenly the points are split at each stage. T(n) = 1 if n = 1 T(n1) + T (n2) otherwise where n1+n2<=n If we assume that the points are ``evenly'' distributed, the running time will solve to O(n log n). if the splits are not balanced, then the running time can easily increase to O(n^2). By Ravikirankalal
42. Think of wrapping a gift. Put the paper in contact with the gift and continue to wrap around from one surface to the next until you get all the way around. By Ravikirankalal
46. The point set is wrapped by a string that bends the that bends with minimum angle from previous to next hull edge By Ravikirankalal
47. Jarvis March - Example p10 p6 p9 p5 p7 p12 p3 p4 p11 p1 p8 p2 p0 By Ravikirankalal
48. Jarvis March - Example p10 p6 p9 p5 p7 p12 p3 p4 p11 p1 p8 p2 p0 By Ravikirankalal
49. Jarvis March - Example p10 p6 p9 p5 p7 p12 p3 p4 p11 p1 p8 p2 p0 By Ravikirankalal
50. Jarvis March - Example p10 p6 p9 p5 p7 p12 p3 p4 p11 p1 p8 p2 p0 By Ravikirankalal
51. Jarvis March - Example p10 p6 p9 p5 p7 p12 p3 p4 p11 p1 p8 p2 p0 By Ravikirankalal
52. Jarvis March - Example p10 p6 p9 p5 p7 p12 p3 p4 p11 p1 p8 p2 p0 By Ravikirankalal
53. Jarvis March - Example p10 p6 p9 p5 p7 p12 p3 p4 p11 p1 p8 p2 p0 By Ravikirankalal
54. Running time we can find the point q in O(n) time. After repeating this h times, we will return back to the starting point and we are done. Thus, the overall running time is O(nh). Worst case efficiency will be n2. By Ravikirankalal