The document summarizes key concepts about binary search trees (BSTs), including:
- BSTs have the properties of binary trees where each node has at most two children, as well as an ordering property where all left descendants of a node are less than the node and all right descendants are greater.
- Common BST operations like finding, inserting, and deleting nodes were discussed, with the finding operation taking O(log n) time on average in a balanced tree.
- Building a BST from a sorted list results in an unbalanced tree in O(n^2) time, but sorting the values first can produce a balanced tree in O(n log n) time.
In computer science, tree traversal (also known as tree search) is a form of graph traversal and refers to the process of visiting (checking and/or updating) each node in a tree data structure, exactly once. Such traversals are classified by the order in which the nodes are visited. The following algorithms are described for a binary tree, but they may be generalized to other trees as well.
In computer science, tree traversal (also known as tree search) is a form of graph traversal and refers to the process of visiting (checking and/or updating) each node in a tree data structure, exactly once. Such traversals are classified by the order in which the nodes are visited. The following algorithms are described for a binary tree, but they may be generalized to other trees as well.
Short explanation about Database Index.
How it's work and how the result.
Medium version :
https://medium.com/dot-lab/database-optimization-1-indexing-649e7837a22a
Trees
Algorithm for searching a node
Inserting a node in BST
Inserting a node
Deleting a node
Deleting a node in BST
Algorithm for deleting node
Deletion in BST
Binary tree traversal methods
Pre-order traversal
In-order traversal
Post order traversal
Construct binary tree
AVL Tree introduction
How to create a AVL tree
How to calclate balance factor
Database is the most fundamental thing about your project, probably even more than programming language. I've seen a lot of projects that didn't choose their DB carefully or had non-optimal practices while operating their DB and they had a lot of problems and suffering because of that. Here are some guidelines on how to choose a database and go forward with happiness.
Class lecture of Data Structure and Algorithms and Python.
Stack, Queue, Tree, Python, Python Code, Computer Science, Data, Data Analysis, Machine Learning, Artificial Intellegence, Deep Learning, Programming, Information Technology, Psuedocide, Tree, pseudocode, Binary Tree, Binary Search Tree, implementation, Binary search, linear search, Binary search operation, real-life example of binary search, linear search operation, real-life example of linear search, example bubble sort, sorting, insertion sort example, stack implementation, queue implementation, binary tree implementation, priority queue, binary heap, binary heap implementation
Class lecture of Data Structure and Algorithms and Python.
Stack, Queue, Tree, Python, Python Code, Computer Science, Data, Data Analysis, Machine Learning, Artificial Intellegence, Deep Learning, Programming, Information Technology, Psuedocide, Tree, pseudocode, Binary Tree, Binary Search Tree, implementation, Binary search, linear search, Binary search operation, real-life example of binary search, linear search operation, real-life example of linear search, example bubble sort, sorting, insertion sort example, stack implementation, queue implementation, binary tree implementation, priority queue, binary heap, binary heap implementation, object-oriented programming, def, in BST, Binary search tree, Red-Black tree, Splay Tree, Problem-solving using Binary tree, problem-solving using BST, inorder, preorder, postorder
Opendatabay - Open Data Marketplace.pptxOpendatabay
Opendatabay.com unlocks the power of data for everyone. Open Data Marketplace fosters a collaborative hub for data enthusiasts to explore, share, and contribute to a vast collection of datasets.
First ever open hub for data enthusiasts to collaborate and innovate. A platform to explore, share, and contribute to a vast collection of datasets. Through robust quality control and innovative technologies like blockchain verification, opendatabay ensures the authenticity and reliability of datasets, empowering users to make data-driven decisions with confidence. Leverage cutting-edge AI technologies to enhance the data exploration, analysis, and discovery experience.
From intelligent search and recommendations to automated data productisation and quotation, Opendatabay AI-driven features streamline the data workflow. Finding the data you need shouldn't be a complex. Opendatabay simplifies the data acquisition process with an intuitive interface and robust search tools. Effortlessly explore, discover, and access the data you need, allowing you to focus on extracting valuable insights. Opendatabay breaks new ground with a dedicated, AI-generated, synthetic datasets.
Leverage these privacy-preserving datasets for training and testing AI models without compromising sensitive information. Opendatabay prioritizes transparency by providing detailed metadata, provenance information, and usage guidelines for each dataset, ensuring users have a comprehensive understanding of the data they're working with. By leveraging a powerful combination of distributed ledger technology and rigorous third-party audits Opendatabay ensures the authenticity and reliability of every dataset. Security is at the core of Opendatabay. Marketplace implements stringent security measures, including encryption, access controls, and regular vulnerability assessments, to safeguard your data and protect your privacy.
Short explanation about Database Index.
How it's work and how the result.
Medium version :
https://medium.com/dot-lab/database-optimization-1-indexing-649e7837a22a
Trees
Algorithm for searching a node
Inserting a node in BST
Inserting a node
Deleting a node
Deleting a node in BST
Algorithm for deleting node
Deletion in BST
Binary tree traversal methods
Pre-order traversal
In-order traversal
Post order traversal
Construct binary tree
AVL Tree introduction
How to create a AVL tree
How to calclate balance factor
Database is the most fundamental thing about your project, probably even more than programming language. I've seen a lot of projects that didn't choose their DB carefully or had non-optimal practices while operating their DB and they had a lot of problems and suffering because of that. Here are some guidelines on how to choose a database and go forward with happiness.
Class lecture of Data Structure and Algorithms and Python.
Stack, Queue, Tree, Python, Python Code, Computer Science, Data, Data Analysis, Machine Learning, Artificial Intellegence, Deep Learning, Programming, Information Technology, Psuedocide, Tree, pseudocode, Binary Tree, Binary Search Tree, implementation, Binary search, linear search, Binary search operation, real-life example of binary search, linear search operation, real-life example of linear search, example bubble sort, sorting, insertion sort example, stack implementation, queue implementation, binary tree implementation, priority queue, binary heap, binary heap implementation
Class lecture of Data Structure and Algorithms and Python.
Stack, Queue, Tree, Python, Python Code, Computer Science, Data, Data Analysis, Machine Learning, Artificial Intellegence, Deep Learning, Programming, Information Technology, Psuedocide, Tree, pseudocode, Binary Tree, Binary Search Tree, implementation, Binary search, linear search, Binary search operation, real-life example of binary search, linear search operation, real-life example of linear search, example bubble sort, sorting, insertion sort example, stack implementation, queue implementation, binary tree implementation, priority queue, binary heap, binary heap implementation, object-oriented programming, def, in BST, Binary search tree, Red-Black tree, Splay Tree, Problem-solving using Binary tree, problem-solving using BST, inorder, preorder, postorder
Similar to Lecture 09 - Binary Search Trees.pptx mission Sk it (20)
Opendatabay - Open Data Marketplace.pptxOpendatabay
Opendatabay.com unlocks the power of data for everyone. Open Data Marketplace fosters a collaborative hub for data enthusiasts to explore, share, and contribute to a vast collection of datasets.
First ever open hub for data enthusiasts to collaborate and innovate. A platform to explore, share, and contribute to a vast collection of datasets. Through robust quality control and innovative technologies like blockchain verification, opendatabay ensures the authenticity and reliability of datasets, empowering users to make data-driven decisions with confidence. Leverage cutting-edge AI technologies to enhance the data exploration, analysis, and discovery experience.
From intelligent search and recommendations to automated data productisation and quotation, Opendatabay AI-driven features streamline the data workflow. Finding the data you need shouldn't be a complex. Opendatabay simplifies the data acquisition process with an intuitive interface and robust search tools. Effortlessly explore, discover, and access the data you need, allowing you to focus on extracting valuable insights. Opendatabay breaks new ground with a dedicated, AI-generated, synthetic datasets.
Leverage these privacy-preserving datasets for training and testing AI models without compromising sensitive information. Opendatabay prioritizes transparency by providing detailed metadata, provenance information, and usage guidelines for each dataset, ensuring users have a comprehensive understanding of the data they're working with. By leveraging a powerful combination of distributed ledger technology and rigorous third-party audits Opendatabay ensures the authenticity and reliability of every dataset. Security is at the core of Opendatabay. Marketplace implements stringent security measures, including encryption, access controls, and regular vulnerability assessments, to safeguard your data and protect your privacy.
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Empowering the Data Analytics Ecosystem: A Laser Focus on Value
The data analytics ecosystem thrives when every component functions at its peak, unlocking the true potential of data. Here's a laser focus on key areas for an empowered ecosystem:
1. Democratize Access, Not Data:
Granular Access Controls: Provide users with self-service tools tailored to their specific needs, preventing data overload and misuse.
Data Catalogs: Implement robust data catalogs for easy discovery and understanding of available data sources.
2. Foster Collaboration with Clear Roles:
Data Mesh Architecture: Break down data silos by creating a distributed data ownership model with clear ownership and responsibilities.
Collaborative Workspaces: Utilize interactive platforms where data scientists, analysts, and domain experts can work seamlessly together.
3. Leverage Advanced Analytics Strategically:
AI-powered Automation: Automate repetitive tasks like data cleaning and feature engineering, freeing up data talent for higher-level analysis.
Right-Tool Selection: Strategically choose the most effective advanced analytics techniques (e.g., AI, ML) based on specific business problems.
4. Prioritize Data Quality with Automation:
Automated Data Validation: Implement automated data quality checks to identify and rectify errors at the source, minimizing downstream issues.
Data Lineage Tracking: Track the flow of data throughout the ecosystem, ensuring transparency and facilitating root cause analysis for errors.
5. Cultivate a Data-Driven Mindset:
Metrics-Driven Performance Management: Align KPIs and performance metrics with data-driven insights to ensure actionable decision making.
Data Storytelling Workshops: Equip stakeholders with the skills to translate complex data findings into compelling narratives that drive action.
Benefits of a Precise Ecosystem:
Sharpened Focus: Precise access and clear roles ensure everyone works with the most relevant data, maximizing efficiency.
Actionable Insights: Strategic analytics and automated quality checks lead to more reliable and actionable data insights.
Continuous Improvement: Data-driven performance management fosters a culture of learning and continuous improvement.
Sustainable Growth: Empowered by data, organizations can make informed decisions to drive sustainable growth and innovation.
By focusing on these precise actions, organizations can create an empowered data analytics ecosystem that delivers real value by driving data-driven decisions and maximizing the return on their data investment.
Data Centers - Striving Within A Narrow Range - Research Report - MCG - May 2...pchutichetpong
M Capital Group (“MCG”) expects to see demand and the changing evolution of supply, facilitated through institutional investment rotation out of offices and into work from home (“WFH”), while the ever-expanding need for data storage as global internet usage expands, with experts predicting 5.3 billion users by 2023. These market factors will be underpinned by technological changes, such as progressing cloud services and edge sites, allowing the industry to see strong expected annual growth of 13% over the next 4 years.
Whilst competitive headwinds remain, represented through the recent second bankruptcy filing of Sungard, which blames “COVID-19 and other macroeconomic trends including delayed customer spending decisions, insourcing and reductions in IT spending, energy inflation and reduction in demand for certain services”, the industry has seen key adjustments, where MCG believes that engineering cost management and technological innovation will be paramount to success.
MCG reports that the more favorable market conditions expected over the next few years, helped by the winding down of pandemic restrictions and a hybrid working environment will be driving market momentum forward. The continuous injection of capital by alternative investment firms, as well as the growing infrastructural investment from cloud service providers and social media companies, whose revenues are expected to grow over 3.6x larger by value in 2026, will likely help propel center provision and innovation. These factors paint a promising picture for the industry players that offset rising input costs and adapt to new technologies.
According to M Capital Group: “Specifically, the long-term cost-saving opportunities available from the rise of remote managing will likely aid value growth for the industry. Through margin optimization and further availability of capital for reinvestment, strong players will maintain their competitive foothold, while weaker players exit the market to balance supply and demand.”
06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Data and AI
Round table discussion of vector databases, unstructured data, ai, big data, real-time, robots and Milvus.
A lively discussion with NJ Gen AI Meetup Lead, Prasad and Procure.FYI's Co-Found
06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Data and AI
Discussion on Vector Databases, Unstructured Data and AI
https://www.meetup.com/unstructured-data-meetup-new-york/
This meetup is for people working in unstructured data. Speakers will come present about related topics such as vector databases, LLMs, and managing data at scale. The intended audience of this group includes roles like machine learning engineers, data scientists, data engineers, software engineers, and PMs.This meetup was formerly Milvus Meetup, and is sponsored by Zilliz maintainers of Milvus.
Chatty Kathy - UNC Bootcamp Final Project Presentation - Final Version - 5.23...John Andrews
SlideShare Description for "Chatty Kathy - UNC Bootcamp Final Project Presentation"
Title: Chatty Kathy: Enhancing Physical Activity Among Older Adults
Description:
Discover how Chatty Kathy, an innovative project developed at the UNC Bootcamp, aims to tackle the challenge of low physical activity among older adults. Our AI-driven solution uses peer interaction to boost and sustain exercise levels, significantly improving health outcomes. This presentation covers our problem statement, the rationale behind Chatty Kathy, synthetic data and persona creation, model performance metrics, a visual demonstration of the project, and potential future developments. Join us for an insightful Q&A session to explore the potential of this groundbreaking project.
Project Team: Jay Requarth, Jana Avery, John Andrews, Dr. Dick Davis II, Nee Buntoum, Nam Yeongjin & Mat Nicholas
3. Announcements
• Change to office hours for just this week
• Tuesday’s “office” office hours / private office hours
• 12:00pm – 12:30pm
• (not at 1:30pm!)
• Dorothy and I trading 2:00pm - 3:00pm office hours this week
• Same time and location
• Homework 1 Statistics
• Mean: 39.7/50 (+1 extra credit)
• Median: 42.5/50 (+0 extra credit)
• Max: 49/50 (+1) or 47/50 (+4)
• Standard Deviation: 10.18
5. Binary Trees
• Binary tree: Each node has at most 2 children (branching factor 2)
• Binary tree is
• A root (with data)
• A left subtree (may be empty)
• A right subtree (may be empty)
• Special Cases:
6. (Last week’s practice) What does the following method do?
int height(Node root){
if (root == null),
return -1;
return 1 + max(height(root.left),
height(root.right);
}
A. It calculates the number of nodes in the tree.
B. It calculates the depth of the nodes.
C. It calculates the height of the tree.
D. It calculates the number of leaves in the tree.
7. Binary Trees: Some Numbers
Recall: height of a tree = longest path from root to leaf (count edges)
For binary tree of height h:
• max # of leaves:
• max # of nodes:
• min # of leaves:
• min # of nodes:
For n nodes, the min height (best-case) is
the max height (worst-case) is
8. Tree Traversals
A traversal is an order for visiting all the nodes of a tree
• Pre-order: root, left subtree, right subtree
• In-order: left subtree, root, right subtree
• Post-order: left subtree, right subtree, root
A
B
D E
C
F
G
9. Tree Traversals: Practice
Which one makes sense for evaluating this expression tree?
• Pre-order: root, left subtree, right subtree
• In-order: left subtree, root, right subtree
• Post-order: left subtree, right subtree, root
+
*
2 4
5
10. 4
12
10
6
2
11
5
8
14
13
7 9
• Structure property (binary tree)
• Each node has 2 children
• Result: keeps operations simple
• Order property
• Result: straight-forward to find any given value
A binary search tree is a type of binary tree
(but not all binary trees are binary search trees!)
Binary Search Tree (BST) Data Structure
17. Practice with insert, primer for delete
Start with an empty tree. Insert the following values, in the given order:
14, 2, 5, 20, 42, 1, 4, 16
Then, changing as few nodes as possible, delete the following in order:
42, 14
What would the root of the resulting tree be?
A. 2
B. 4
C. 5
D. 16
25. Changing as few nodes as possible, delete the following in order:
42, 14
Practice with insert, primer for delete
42
5
1
20
2
14
4
16
26. delete through Lazy Deletion
• Lazy deletion can work well for a BST
• Simpler
• Can do “real deletions” later as a batch
• Some inserts can just “undelete” a tree node
• But
• Can waste space and slow down find operations
• Make some operations more complicated:
• e.g., findMin and findMax?
27. buildTree for BST
Let’s consider buildTree (insert values starting from an empty tree)
Insert values 1, 2, 3, 4, 5, 6, 7, 8, 9 into an empty BST
• If inserted in given order,
what is the tree?
• What big-O runtime for
buildTree on this sorted input?
• Is inserting in the reverse order any better?
28. buildTree for BST
Insert values 1, 2, 3, 4, 5, 6, 7, 8, 9 into an empty BST
What we if could somehow re-arrange them
• median first, then left median, right median, etc.
5, 3, 7, 2, 1, 4, 8, 6, 9
• What tree does that give us?
• What big-O runtime?
Editor's Notes
10
11
Ah, now the hard case. How do we delete a two child node?
We remove it and replace it with what?
It has all these left and right children that need to be greater and less than the new value (respectively).
Is there any value that is guaranteed to be between the two subtrees?
Two of them: the successor and predecessor!
So, let’s just replace the node’s value with it’s successor and then delete the succ.
Options:
successor minimum node from right subtree findMin(node.right)
predecessor maximum node from left subtree findMax(node.left)
Ah, now the hard case. How do we delete a two child node?
We remove it and replace it with what?
It has all these left and right children that need to be greater and less than the new value (respectively).
Is there any value that is guaranteed to be between the two subtrees?
Two of them: the successor and predecessor!
So, let’s just replace the node’s value with it’s successor and then delete the succ.