- The document discusses linear regression models and methods for estimating coefficients, including ordinary least squares and regularization methods like ridge regression and lasso regression.
- It explains how lasso regression, unlike ordinary least squares and ridge regression, has the property of driving some of the coefficient estimates exactly to zero, allowing for variable selection.
- An example using crime rate data shows how lasso regression can select a more parsimonious model than other methods by setting some coefficients to zero.
- The document discusses linear regression models and methods for estimating coefficients, including ordinary least squares and regularization methods like ridge regression and lasso regression.
- It explains how lasso regression, unlike ordinary least squares and ridge regression, has the property of driving some of the coefficient estimates exactly to zero, allowing for variable selection.
- An example using crime rate data shows how lasso regression can select a more parsimonious model than other methods by setting some coefficients to zero.
NagoyaStat #12 で使用した資料です(公開に当たって当日ホワイトボードに書いた内容等を補完したものになります)。
「StanとRでベイズ統計モデリング」の第9章前半になります。
第9章のテーマは行列やベクトルを使った演算の高速化です。
---
The title of textbook is "Bayesian statistical modeling with Stan and R", and that of Chapter 9 in textbook is "advanced grammar" in English.
This document provides a summary of Taro Matsuzawa's career and activities from 1981 to 2011. It notes that he was involved with various computer-related clubs and organizations in Japan, including English language societies and Linux communities. It also discusses his work on open source projects like Mozilla and Pantomime, an open source email library for iOS.
ModernWeb 2019: Why we replace TypeScript with DartJumper Chen
This document discusses replacing TypeScript with Dart for a new product. In 2016, TypeScript was initially chosen for its static typing and classes, but circular reference issues arose. Dart was then considered but had performance and ecosystem issues in version 1. Dart version 2 improved performance but dropped some features and Dart2JS stacktraces remained difficult to read. Ultimately Dart was chosen over continuing to use TypeScript due to the effort required to fix existing code issues.
NagoyaStat #12 で使用した資料です(公開に当たって当日ホワイトボードに書いた内容等を補完したものになります)。
「StanとRでベイズ統計モデリング」の第9章前半になります。
第9章のテーマは行列やベクトルを使った演算の高速化です。
---
The title of textbook is "Bayesian statistical modeling with Stan and R", and that of Chapter 9 in textbook is "advanced grammar" in English.
This document provides a summary of Taro Matsuzawa's career and activities from 1981 to 2011. It notes that he was involved with various computer-related clubs and organizations in Japan, including English language societies and Linux communities. It also discusses his work on open source projects like Mozilla and Pantomime, an open source email library for iOS.
ModernWeb 2019: Why we replace TypeScript with DartJumper Chen
This document discusses replacing TypeScript with Dart for a new product. In 2016, TypeScript was initially chosen for its static typing and classes, but circular reference issues arose. Dart was then considered but had performance and ecosystem issues in version 1. Dart version 2 improved performance but dropped some features and Dart2JS stacktraces remained difficult to read. Ultimately Dart was chosen over continuing to use TypeScript due to the effort required to fix existing code issues.
Reproducible Computational Research in RSamuel Bosch
A short presentation with pointers on getting started with reproducible computational research in R. Some of the topics include git, R package development, document generation with R markdown, saving plots, saving tables and using packrat.
Jens Siebert gave a presentation on using Rust for embedded systems. He discussed the history and characteristics of Rust, how it provides memory safety and concurrency without overhead. He also covered Rust's support for embedded targets through crates like embedded-hal and board-specific crates. As an example, he showed how to set up a project to blink an LED on the Raspberry Pi Pico using Rust and its embedded ecosystem. He concluded that Rust is well-suited for embedded due to its performance, safety features, architecture support, and available drivers, though it has a steep learning curve.
This document outlines the agenda for a two-day workshop on learning R and analytics. Day 1 will introduce R and cover data input, quality, and exploration. Day 2 will focus on data manipulation, visualization, regression models, and advanced topics. Sessions include lectures and demos in R. The goal is to help attendees learn R in 12 hours and gain an introduction to analytics skills for career opportunities.
Игорь Фесенко "Direction of C# as a High-Performance Language"Fwdays
There are a lot of upcoming performance changes in .NET. Starting from code generation (JIT, AOT) and optimizations that can be performed by the compiler (inlining, flowgraph & loop analysis, dead code elimination, SIMD, stack allocation and so on). In this talk we will cover some features of C# 7 are going towards making low level optimization.
I will share not only how we can improve performance with the next version of .NET, but how we can do it today using different techniques and tools like Roslyn analyzers, Channels (Push based Streams), System.Slices, System.Buffers and System.Runtime.CompilerServices.Unsafe.
PHP Backends for Real-Time User Interaction using Apache Storm.DECK36
Engaging users in real-time is the topic of our times. Whether it’s a game, a shop, or a content-network, the aim remains the same: providing a personalized experience. In this workshop we will look under the hood of Apache Storm and lay a firm foundation on how to use it with PHP. By that, you can leverage your existing codebase and PHP expertise for an entirely new world: real-time analytics and business logic working on message streams. During the course of the workshop, we will introduce Apache Storm and take a look at all of its components. We will then skyrocket the applicability of Storm by showing you how to implement their components with PHP. All exercises will be conducted using an example project, the infamous and most exhilarating lolcat kitten game ever conceived: Plan 9 From Outer Kitten. In order to follow the hands-on excercises, you will need a development VM prepared by us with all relevant system components and our project repositories. To make the workshop experience as smooth as possible for all participants, please bring a prepared computer to the workshop, as there will be no time to deal with installation and setup issues. Please download all prerequisites and install them as described: VM, Plan 9 webapp, Plan 9 storm backend, (Tutorial: https://github.com/DECK36/plan9_workshop_tutorial ).
The document discusses hacking the Go compiler by modifying various phases. The lexer phase scans source code and tokenizes it. The parser phase builds an abstract syntax tree from the tokens by making parser calls. Examples are given of modifying the lexer to accept emoji identifiers and adding a new operator by extending the parser phase. Helpful debugging functions are also outlined.
This document summarizes a presentation given by Diane Mueller from ActiveState and Dr. Mike Müller from Python Academy. It compares MATLAB and Python capabilities for scientific computing. Python has many libraries like NumPy, SciPy, IPython and matplotlib that provide similar functionality to MATLAB. Together these are often called "Pylab". The presentation provides an overview of Python, NumPy arrays, visualization with matplotlib, and integrating Python with other languages.
Go is an open source programming language designed by Google to be concurrent, garbage collected, and efficient. It has a simple syntax and is used by Google and others to build large distributed systems. Key features include garbage collection, concurrency with goroutines and channels, interfaces without inheritance, and a large standard library.
Python 3.6 includes several new features and improvements related to asynchronous programming and language syntax. PEP 525 introduces asynchronous generators to allow async and await in generator functions. PEP 530 adds asynchronous comprehensions for concise creation of asynchronous iterators. Other PEPs improve class attribute definition order preservation, string formatting syntax, and the addition of asynchronous APIs to the standard library. Python 3.6 continues Python's progress towards native asynchronous programming capabilities.
Apex on Local - Better Alternative to Salesforce DXtzm_freedom
This document introduces Land, a tool that allows developers to run Apex code and SOQL queries locally rather than in Salesforce. It provides three key benefits over Salesforce DX: 1) Faster development without needing to deploy to scratch orgs each time, 2) Local debugging of Apex code using an interactive debugger, and 3) Support for running SOQL queries against a local SQLite database for test data. Land uses ANTLR to parse Apex and allows running code via a REPL similar to other languages like Ruby. It aims to contribute to easier local Apex development outside of Salesforce's platform.
This document discusses various programming languages and databases that can be learned on Progate including HTML/CSS, JavaScript, React, Ruby, Python, and Go. It also discusses SQL and database concepts like the query parser, optimizer, executor, and how SELECT queries from the users table return specific rows that match the query criteria. Examples of indexes and performance improvements with indexes are provided as well as examples of joining data from multiple tables in a database.
Relational Database Access with Python ‘sans’ ORM Mark Rees
This document discusses various approaches for accessing relational databases from Python, including ORM libraries like Django and SQLAlchemy, raw SQL queries using the Python DB-API standard, and template libraries like SpringPython. It provides code examples for common database operations like SELECT, INSERT, and comparing database schemas. A number of Python database adapters are also described, supporting databases like PostgreSQL, MySQL, SQLite and more.
This document provides an overview of programming for GPUs. It discusses how GPUs have many more cores than CPUs and are better suited for data-parallel work. The main challenges of GPU programming are different memory architectures, branch divergence, and complexity. It presents CUDA and OpenCL as common approaches for GPU programming and provides an example of a reduction kernel written in CUDA/OpenCL using shared memory and synchronization barriers between threads. Recent advances that help with GPU programming include kernel calls from the GPU, multi-GPU support, unified memory, task parallelism, better profilers, and C++ language support.
at CARME 2019 CapeTown
Three months after CARME2015, I published the Japanese translation of Clausenâs âApplied Correspondence Analysisâ, published by SAGE Ohom-sha, which is the famous scientific publisher in Japan. Fortunately, I received a lot of positive feedback to the translation.
I have recently undertaken exchanges with advanced researchers of CA, including those concerned with Hayashi's quantification theory.
In my talk I will report on the process of these exchanges and what I observed from their feedback.
The use of correspondence analysis in sociology is commonly viewed alongside Bourdieuâs âla distinction". However, there are problems in understanding such a view for translators of MCA and so Bourdieu perspective of the method, including statistical methods, was not fully understood except for a small number of researchers in Japan.
Despite this, we can recognise the new developments around MCA that have been made in recent years. In 2016, questions raised by Bourdieuâs use of MCA by Prof Kitada in "What is a Hobby for Society: Method Criteria of Cultural Sociology" , and in 2017 a Japanese translation of Tony Bennetâs âCulture, Class, Distinctionâ in which Bourdieuâs method was critically inherited and applied to British society was published.
On the other hand, improvements in the performance of personal computers, the widespread availability and expansion of the statistical language R, the utility of MCA has greatly improved.
In my presentation, along seeing these change of environments, I describe the current landscape of CA/MCA in Japan, and I will propose the educational program for undergraduate students to learn CA/MCA.
CA, MCA, Bourdieu, Japan, education, R
This document summarizes the contents and version history of a Japanese language book on correspondence analysis. It includes chapters 1 through 3 and links related to the introduction and first chapter. It describes the composition of the book, discusses chapters 1-3, and lists the meeting history and links for an associated research group studying correspondence analysis.
This document discusses geometric data analysis (GDA) techniques including correspondence analysis (CA), multiple correspondence analysis (MCA), and generalized discriminant analysis (GDA). It provides an overview of these methods, how they are related, and examples of their applications. Key references on CA, MCA, and GDA are also cited for further reading.
This document discusses creating mosaic plot wrappers in R. It describes writing functions that wrap the base mosaicplot function to add customization options like color palettes, labels, and titles. Code examples are provided for wrapper functions that allow setting the color palette, margins, label formatting, and keeping or rotating labels. Instructions are given for packaging the wrapper functions into an R package and publishing it to GitHub.
1) The document discusses formatting parameters for plots in R including font size, family, fill colors, margins, and label rotation.
2) It defines a mosaic_jp function to create mosaic plots with specified formatting and includes parameters for the main title, subtitles, and facet labels.
3) Examples are given of using the function to create mosaic plots and adjusting various plotting parameters like the number of color sets and font sizes for labels.
More from Tsuda University Institute for Mathematics and Computer Science (20)
How Can Hiring A Mobile App Development Company Help Your Business Grow?ToXSL Technologies
ToXSL Technologies is an award-winning Mobile App Development Company in Dubai that helps businesses reshape their digital possibilities with custom app services. As a top app development company in Dubai, we offer highly engaging iOS & Android app solutions. https://rb.gy/necdnt
Do you want Software for your Business? Visit Deuglo
Deuglo has top Software Developers in India. They are experts in software development and help design and create custom Software solutions.
Deuglo follows seven steps methods for delivering their services to their customers. They called it the Software development life cycle process (SDLC).
Requirement — Collecting the Requirements is the first Phase in the SSLC process.
Feasibility Study — after completing the requirement process they move to the design phase.
Design — in this phase, they start designing the software.
Coding — when designing is completed, the developers start coding for the software.
Testing — in this phase when the coding of the software is done the testing team will start testing.
Installation — after completion of testing, the application opens to the live server and launches!
Maintenance — after completing the software development, customers start using the software.
Mobile App Development Company In Noida | Drona InfotechDrona Infotech
Drona Infotech is a premier mobile app development company in Noida, providing cutting-edge solutions for businesses.
Visit Us For : https://www.dronainfotech.com/mobile-application-development/
Most important New features of Oracle 23c for DBAs and Developers. You can get more idea from my youtube channel video from https://youtu.be/XvL5WtaC20A
When it is all about ERP solutions, companies typically meet their needs with common ERP solutions like SAP, Oracle, and Microsoft Dynamics. These big players have demonstrated that ERP systems can be either simple or highly comprehensive. This remains true today, but there are new factors to consider, including a promising new contender in the market that’s Odoo. This blog compares Odoo ERP with traditional ERP systems and explains why many companies now see Odoo ERP as the best choice.
What are ERP Systems?
An ERP, or Enterprise Resource Planning, system provides your company with valuable information to help you make better decisions and boost your ROI. You should choose an ERP system based on your company’s specific needs. For instance, if you run a manufacturing or retail business, you will need an ERP system that efficiently manages inventory. A consulting firm, on the other hand, would benefit from an ERP system that enhances daily operations. Similarly, eCommerce stores would select an ERP system tailored to their needs.
Because different businesses have different requirements, ERP system functionalities can vary. Among the various ERP systems available, Odoo ERP is considered one of the best in the ERp market with more than 12 million global users today.
Odoo is an open-source ERP system initially designed for small to medium-sized businesses but now suitable for a wide range of companies. Odoo offers a scalable and configurable point-of-sale management solution and allows you to create customised modules for specific industries. Odoo is gaining more popularity because it is built in a way that allows easy customisation, has a user-friendly interface, and is affordable. Here, you will cover the main differences and get to know why Odoo is gaining attention despite the many other ERP systems available in the market.
E-commerce Development Services- Hornet DynamicsHornet Dynamics
For any business hoping to succeed in the digital age, having a strong online presence is crucial. We offer Ecommerce Development Services that are customized according to your business requirements and client preferences, enabling you to create a dynamic, safe, and user-friendly online store.
UI5con 2024 - Keynote: Latest News about UI5 and it’s EcosystemPeter Muessig
Learn about the latest innovations in and around OpenUI5/SAPUI5: UI5 Tooling, UI5 linter, UI5 Web Components, Web Components Integration, UI5 2.x, UI5 GenAI.
Recording:
https://www.youtube.com/live/MSdGLG2zLy8?si=INxBHTqkwHhxV5Ta&t=0
Measures in SQL (SIGMOD 2024, Santiago, Chile)Julian Hyde
SQL has attained widespread adoption, but Business Intelligence tools still use their own higher level languages based upon a multidimensional paradigm. Composable calculations are what is missing from SQL, and we propose a new kind of column, called a measure, that attaches a calculation to a table. Like regular tables, tables with measures are composable and closed when used in queries.
SQL-with-measures has the power, conciseness and reusability of multidimensional languages but retains SQL semantics. Measure invocations can be expanded in place to simple, clear SQL.
To define the evaluation semantics for measures, we introduce context-sensitive expressions (a way to evaluate multidimensional expressions that is consistent with existing SQL semantics), a concept called evaluation context, and several operations for setting and modifying the evaluation context.
A talk at SIGMOD, June 9–15, 2024, Santiago, Chile
Authors: Julian Hyde (Google) and John Fremlin (Google)
https://doi.org/10.1145/3626246.3653374
Need for Speed: Removing speed bumps from your Symfony projects ⚡️Łukasz Chruściel
No one wants their application to drag like a car stuck in the slow lane! Yet it’s all too common to encounter bumpy, pothole-filled solutions that slow the speed of any application. Symfony apps are not an exception.
In this talk, I will take you for a spin around the performance racetrack. We’ll explore common pitfalls - those hidden potholes on your application that can cause unexpected slowdowns. Learn how to spot these performance bumps early, and more importantly, how to navigate around them to keep your application running at top speed.
We will focus in particular on tuning your engine at the application level, making the right adjustments to ensure that your system responds like a well-oiled, high-performance race car.
Neo4j - Product Vision and Knowledge Graphs - GraphSummit ParisNeo4j
Dr. Jesús Barrasa, Head of Solutions Architecture for EMEA, Neo4j
Découvrez les dernières innovations de Neo4j, et notamment les dernières intégrations cloud et les améliorations produits qui font de Neo4j un choix essentiel pour les développeurs qui créent des applications avec des données interconnectées et de l’IA générative.
Atelier - Innover avec l’IA Générative et les graphes de connaissancesNeo4j
Atelier - Innover avec l’IA Générative et les graphes de connaissances
Allez au-delà du battage médiatique autour de l’IA et découvrez des techniques pratiques pour utiliser l’IA de manière responsable à travers les données de votre organisation. Explorez comment utiliser les graphes de connaissances pour augmenter la précision, la transparence et la capacité d’explication dans les systèmes d’IA générative. Vous partirez avec une expérience pratique combinant les relations entre les données et les LLM pour apporter du contexte spécifique à votre domaine et améliorer votre raisonnement.
Amenez votre ordinateur portable et nous vous guiderons sur la mise en place de votre propre pile d’IA générative, en vous fournissant des exemples pratiques et codés pour démarrer en quelques minutes.
Using Query Store in Azure PostgreSQL to Understand Query PerformanceGrant Fritchey
Microsoft has added an excellent new extension in PostgreSQL on their Azure Platform. This session, presented at Posette 2024, covers what Query Store is and the types of information you can get out of it.
Artificia Intellicence and XPath Extension FunctionsOctavian Nadolu
The purpose of this presentation is to provide an overview of how you can use AI from XSLT, XQuery, Schematron, or XML Refactoring operations, the potential benefits of using AI, and some of the challenges we face.
WWDC 2024 Keynote Review: For CocoaCoders AustinPatrick Weigel
Overview of WWDC 2024 Keynote Address.
Covers: Apple Intelligence, iOS18, macOS Sequoia, iPadOS, watchOS, visionOS, and Apple TV+.
Understandable dialogue on Apple TV+
On-device app controlling AI.
Access to ChatGPT with a guest appearance by Chief Data Thief Sam Altman!
App Locking! iPhone Mirroring! And a Calculator!!