1597123980

# Recommender System — singular value decomposition (SVD) & truncated SVD

The most common method for recommendation systems often comes with Collaborating Filtering (CF) where it relies on the past user and item dataset. Two popular approaches of CF are latent factor models, which extract features from user and item matrices and neighborhood models, which finds similarities between products or users.

The neighborhood model is an item-oriented approach to discover the user preference based on the ratings given by the user for similar items. On the other hand, latent factor models such as Singular Value Decomposition (SVD) extract features and correlation from the user-item matrix. For example, when items are movies in different categories. SVD would generate factors when looking into the dimension space like action vs comedy, Hollywood vs Bollywood, or Marvel vs Disney. Mainly, we will focus on the latent factor model for the Singular Value Decomposition (SVD) approach.

In this article, you will learn the singular value decomposition and truncated SVD of the recommender system:

(1) Introduction to singular value decomposition

(2) Introduction to truncated SVD

(3) Hands-on experience of python code on matrix factorization

## Introduction to singular value decomposition

When it comes to dimensionality reduction, the Singular Value Decomposition (SVD) is a popular method in linear algebra for matrix factorization in machine learning. Such a method shrinks the space dimension from N-dimension to K-dimension (where K<N) and reduces the number of features. SVD constructs a matrix with the row of users and columns of items and the elements are given by the users’ ratings. Singular value decomposition decomposes a matrix into three other matrices and extracts the factors from the factorization of a high-level (user-item-rating) matrix.

Matrix U: singular matrix of (user*latent factors)

Matrix S: diagonal matrix (shows the strength of each latent factor)

Matrix U: singular matrix of (item*latent factors)

From matrix factorization, the latent factors show the characteristics of the items. Finally, the utility matrix A is produced with shape m*n. The final output of the matrix A reduces the dimension through latent factors’ extraction. From the matrix A, it shows the relationships between users and items by mapping the user and item into r-dimensional latent space. Vector X_i is considered each item and vector Y_u is regarded as each user. The rating is given by a user on an item as R_ui = X^T_i * Y_u. The loss can be minimized by the square error difference between the product of R_ui and the expected rating.

Regularization is used to avoid overfitting and generalize the dataset by adding the penalty.

#recommendation-system #matrix #singular-values #machine-learning #python

1597123980

## Recommender System — singular value decomposition (SVD) & truncated SVD

The most common method for recommendation systems often comes with Collaborating Filtering (CF) where it relies on the past user and item dataset. Two popular approaches of CF are latent factor models, which extract features from user and item matrices and neighborhood models, which finds similarities between products or users.

The neighborhood model is an item-oriented approach to discover the user preference based on the ratings given by the user for similar items. On the other hand, latent factor models such as Singular Value Decomposition (SVD) extract features and correlation from the user-item matrix. For example, when items are movies in different categories. SVD would generate factors when looking into the dimension space like action vs comedy, Hollywood vs Bollywood, or Marvel vs Disney. Mainly, we will focus on the latent factor model for the Singular Value Decomposition (SVD) approach.

In this article, you will learn the singular value decomposition and truncated SVD of the recommender system:

(1) Introduction to singular value decomposition

(2) Introduction to truncated SVD

(3) Hands-on experience of python code on matrix factorization

## Introduction to singular value decomposition

When it comes to dimensionality reduction, the Singular Value Decomposition (SVD) is a popular method in linear algebra for matrix factorization in machine learning. Such a method shrinks the space dimension from N-dimension to K-dimension (where K<N) and reduces the number of features. SVD constructs a matrix with the row of users and columns of items and the elements are given by the users’ ratings. Singular value decomposition decomposes a matrix into three other matrices and extracts the factors from the factorization of a high-level (user-item-rating) matrix.

Matrix U: singular matrix of (user*latent factors)

Matrix S: diagonal matrix (shows the strength of each latent factor)

Matrix U: singular matrix of (item*latent factors)

From matrix factorization, the latent factors show the characteristics of the items. Finally, the utility matrix A is produced with shape m*n. The final output of the matrix A reduces the dimension through latent factors’ extraction. From the matrix A, it shows the relationships between users and items by mapping the user and item into r-dimensional latent space. Vector X_i is considered each item and vector Y_u is regarded as each user. The rating is given by a user on an item as R_ui = X^T_i * Y_u. The loss can be minimized by the square error difference between the product of R_ui and the expected rating.

Regularization is used to avoid overfitting and generalize the dataset by adding the penalty.

#recommendation-system #matrix #singular-values #machine-learning #python

1620633584

## System Databases in SQL Server

##### Introduction

In SSMS, we many of may noticed System Databases under the Database Folder. But how many of us knows its purpose?. In this article lets discuss about the System Databases in SQL Server.

##### System Database

Fig. 1 System Databases

There are five system databases, these databases are created while installing SQL Server.

• Master
• Model
• MSDB
• Tempdb
• Resource
##### Master
• This database contains all the System level Information in SQL Server. The Information in form of Meta data.
• Because of this master database, we are able to access the SQL Server (On premise SQL Server)
##### Model
• This database is used as a template for new databases.
• Whenever a new database is created, initially a copy of model database is what created as new database.
##### MSDB
• This database is where a service called SQL Server Agent stores its data.
• SQL server Agent is in charge of automation, which includes entities such as jobs, schedules, and alerts.
##### TempDB
• The Tempdb is where SQL Server stores temporary data such as work tables, sort space, row versioning information and etc.
• User can create their own version of temporary tables and those are stored in Tempdb.
• But this database is destroyed and recreated every time when we restart the instance of SQL Server.
##### Resource
• The resource database is a hidden, read only database that holds the definitions of all system objects.
• When we query system object in a database, they appear to reside in the sys schema of the local database, but in actually their definitions reside in the resource db.

#sql server #master system database #model system database #msdb system database #sql server system databases #ssms #system database #system databases in sql server #tempdb system database

1627055413

## Secret Email System Review - Recommended or Not?

Matt Bacak’s secret email system is one of the most successful products in the WarriorPlus marketplace in recent memory. My secret email system review will not try to hard sell you on the product – I mean, it’s pretty cheap, so if you’re going to buy it, you’re going to buy it. Instead, I’ll concentrate on explaining the benefits of email marketing and how to get the most out of Matt’s system.

Nowadays, digital marketing is essential for every business. But what is the best strategy? There are many different points of view, but one thing is certain: emails are essential. Email marketing is one of the most efficient and cost-effective ways to promote a business online, and it is simple and inexpensive to get started. The most important thing is to understand your audience and deliver content and offers that are truly relevant to them.

The PDF Download of an Honest Secret Email System Review
The front-end product
What Matt Bacak is selling, which has been promoted by such capable affiliates as Curt Maly, is a PDF ebook that you can download immediately after purchasing. However, there are a number of bonuses included to sweeten the deal. You get access to Mr. Bacak’s private Facebook group, and instead of a simple PDF download, you get a massive zip file full of useful files and videos.
Now that we know what we’re up against, let’s get into this secret email system review!

What is Included in the Secret Email System Download?
Here is a list of everything you get inside the zip file sold at the front end of the Secret Email System:

Matt Bacak’s 3x Formula Calculator (plus a video explaining how to use it)
1000 email swipe files in text format (swipe files or “swipes” are like templates you can repurpose in a variety of ways).
A 1.5-hour video session

A massive book of swipe files (in PDF format)
A copy of Matt’s book, Secrets of the Internet Millionaire Mind,
A video tutorial on how to select “irresistible offers” from affiliate marketplaces.

The PDF version of The Secret Email System
The Checklist for the Secret Email System PDF
Text files containing instructions for joining the Facebook group and other bonuses
Matt was charging less than \$6 for all of that value last time I checked. He is demonstrating his many years of experience in internet marketing by creating an irresistible offer that people will want to buy and affiliates will want to promote. As a result, the Secret Email System has sold more copies on Warrior Plus than any other product in recent memory.

Examine everything included in the secret email system
Who is Matt Bacak, and why should I listen to him?
Many consider Matt Bacak to be an internet marketing legend, and email marketing is his primary focus. My first encounter with Matt came in the form of some Facebook ads he ran. Matt explained who he was in the video ad (which featured a little guy dancing in the background) and invited me to visit his blog, which I did. He demonstrated a thorough understanding of online business, so it’s no surprise that he put together the ultimate email marketing package.
headshot of Matt Bacak

Overall, Matt’s ad was one of the strangest Facebook ads I’ve ever seen. It was also one of the most effective and memorable. I didn’t buy whatever Matt was selling that day, but I read his blog and remembered his name and who he was. When I saw Curt Maly running ads for Matt Bacak’s Secret Email System months later, it made a big difference.

When I saw that the price was under \$6 and that the bonuses were included, I knew I had to buy the product. I didn’t buy it right away because I was too busy, but it stayed in the back of my mind until I had the opportunity to do so.
If it isn’t obvious, I’ll explain: the reason you should listen to Matt Bacak is that he knows how to get inside people’s heads and stay there, both as a marketer and as a public figure.

Is the Secret Email System Training of Good Quality?
At first glance, the training does not appear to be groundbreaking, but this is because the creator is unconcerned about flashy packaging. You literally get a zip file full of stuff that most people would put on a membership website. I can see how this would irritate some people who are used to flashy ClickFunnels and Kajabi courses.

If that describes you, you’re missing out. Matt’s training isn’t flashy, but it describes a solid system that most businesses can implement in some way. As the name implies, it all revolves around building a list and emailing it on a regular basis. Did I ruin the surprise?
Front end offer and upsells from a secret email system
Bonuses from the Secret Email System (and a Bonus From Me)
I’ve already outlined everything you get in the zip file that serves as the funnel’s front-end offer. Everything else, other than the Secret Email System PDF itself, is considered a bonus, and the total value could easily be in the hundreds of dollars.

That’s why purchasing this product was such a no-brainer for me. I already knew how to write good marketing emails, but I really wanted to look inside Matt’s system.
In addition to everything else, you’ll get lifetime access to Matt’s private Facebook community. He answers questions from people here on a daily basis, and it can be a great place to learn.

The truth is that you get so much value and stuff from purchasing this product that adding another bonus is almost pointless. But I’m a bonus machine, so be prepared.
In 2020, I published my first book on email marketing, How to Build Your First Money Making Email List. You’re already getting a lot of reading material, but if you purchase Matt’s product through my link, I’ll add it to the stack. Most of the books I write sell for \$27, so this just adds to the ridiculous valuation of this sub-six-dollar product.
Bonuses Bonuses for Matt Bacak’s Secret Email System
Will This Product Really Help You Make Money Online?

It all depends on whether or not you use the secret email system. According to multiple sources, Matt Bacak is in charge of millions of dollars in sales for both himself and his clients. And the best thing about this guy is that he’s upfront and honest, and he puts his money where his mouth is. What I mean is that he doesn’t hold anything back in the books he writes. That is another reason he has amassed such a large and devoted fan base.

Finally, if your business can profit from email marketing or if you want to use email marketing to become an influential public figure, I believe this ebook can assist you. It helped me improve my understanding of the business side of being an affiliate marketer and is far more valuable than the price tag. This product will be especially useful if you want to get started in affiliate marketing with a small investment.

matt bacak’s business model
Going Beyond My Review – Secret Email System
The book itself goes beyond email marketing, but I don’t want to give too much away. Instead, I’ll go over some of the finer points of lead generation quickly so you can get started building your email list as soon as possible.

Now, I’m guessing that roughly 90% of people reading this review are affiliate marketers or are interested in affiliate marketing. As a result, I’m going to focus on lead generation strategies used by many successful affiliates. If you want to learn more about my favorite affiliate marketing strategies, click on that link to read my in-depth guide.

The Most Effective Methods for Building an Email List
Here’s a rundown of some of the best (and quickest) ways to build an email list. First, you’ll need a way to collect emails, and it must be a high-converting method. My favorite lead generation tools are:
ConvertBox (on-site messaging software/advanced popup builder)
ConversioBot (website chatbot platform)

You may have noticed that the majority of them are chatbots. Chatbots, on the other hand, are one of the best ways to not only capture an email address, but also to obtain additional customer information and even directly sell products.
The following are the most effective ways to drive traffic to these tools:
Facebook ads (particularly effective when paired with ConvertBox)

Influencer Marketing
Search Engine Optimization
Secret Email System sales page Matt Bacak

If you can master even one of those traffic methods and use it to drive people to a high-converting optin or sales funnel, you’ll be well on your way to creating a recurring income.
Whether or not you choose to purchase this product through my link, I wish you the best of luck with your online business. If you do purchase the system, I hope to see you in the Facebook community! Please feel free to contact me via message or email at any time.

And if you do get the ebook through my link, please let me know so I can send you a copy of my book as a bonus!

Frequently Asked Questions (FAQs) About The Secret Email System
Here are some frequently asked product-related questions.
Is the secret email system bonus worth it?

In my opinion, the front end product and the majority of the bonuses are worth the price. I would have paid more just to gain access to Matt’s Facebook group!
What are the benefits of a hidden email system?
The main benefit is that you will learn one of the highest ROI business practices (email marketing) from someone who has built a seven-figure online business.

What do you call email marketing?
Email marketing is an important component of digital marketing for many businesses. Email marketing software is frequently referred to as an autoresponder, but a good email marketing platform will have more functionality.

Is this a legitimate way to make money online?
My secret email system review says it’s a great way to make money online as long as your online business uses marketing emails. It does require a list, but Matt teaches several methods for creating one.

Visit The Officail Website

#secret email system matt bacak #secret email system review #secret email system #secret email system bonus #secret email system bonuses #secret email system reviews

1627009531

## Super Affiliate System Review - Recommended or Not?

### Is it worth your money?

John Crestani created the Super Affiliate System, an ideal program to equip people with information and skills to achieve affiliate marketing success. In this system, learners need to participate in a module-based learning setting that will help them get started with affiliate marketing by using a simplified system that consists of a single website, buyers, and regular quality traffic. Go through the super affiliate system review to find out more!

John Crestanis’s extensive knowledge and skills in this industry set the Super Affiliate System far apart from competitor affiliate marketing systems. But is the Super Affiliate Commission System a genuine deal? Is it worth investing in? Today, in this Super Affiliate System review, we will take a look at what the system requires and decide whether it’s a real deal affiliate marketing enthusiasts should invest in.

### What is the Super Affiliate System?

This is a complete training course that assists people in becoming successful affiliate marketers. The guide uses videos to lead you through the tools and processes you need to become a super affiliate marketer. The program creator has shared thriving, in-depth strategies to give you a life of freedom if you pay heed to them.

The Super Affiliate System is a training guide to equip you with knowledge and skills in the industry. The system will also allow a list of tools needed for affiliate marketers to fast-track their potential.

### Super Affiliate System Review: Pros and Cons

There are a few pros and cons that will enlighten beginner affiliates on whether to consider this system or not. Let’s have a look at them one by one:
Pros:-

The system has extensive and informative, easy to follow modules.

The system is designed in a user-friendly manner, especially for beginners.

Equipped with video tutorials to quickly guide you through the process.

The system gives affiliates niche information to provide them with a competitive advantage.

Equipped with revision sections, weekly questions, and daily assignments to help you grasp all the course ideas.

The system extends clients to a 24/7 support system.

It allows clients to have monthly payment plans that can be suitable for those who can’t bear the price of a single down payment. It offers

clients a lot of bonuses.

Clients are allowed a 60-day Super Affiliate System refund guarantee.

Cons:-

It’s very expensive.

Limited coverage of affiliate networks and niches.

### Who created the Super Affiliate System?

John Crestani, a 29-year-old expert in affiliate marketing from Santa Monica, California, is the program’s creator. The veteran left out of college and chose to earn money online since there are low job prospects. He failed several times, striving to make ends meet for quite some time until he successfully built a successful affiliate site dealing with health-related products.
He is currently a seven-figure person making more than \$500 per month. His remarkable success in affiliate marketing has made him a featured in Yahoo Finance, Inc., Forbes, Business Insider, and Home Business magazine.

With the enormous success he has seen in affiliate marketing, John has designed an easy-to-follow guide to provide people with the skills to make money as an affiliate marketer. He has described all the strategies and tools he used to lead him to success.

### Super Affiliate System Review: Does it Work?

The system accommodates affiliate marketers with in-depth details on how to develop successful affiliate networks. The Super Affiliate System review has a positive impact on different affiliate marketers who have tried it and noticed impressive results. But then, does it work?

The program doesn’t promise you overnight riches; it demands work and application to perform it. After finishing the Super Affiliate System online video training course, attaining success requires you to put John’s strategies into practice. A lot of commitment, hard work, and time are required in order to become a successful affiliate marketer.

### How Does It Work?

As its name suggests, the Super Affiliate System is there to make you a super affiliate. John himself is an experienced affiliate, and he has accumulated all the necessary tools to achieve success in training others to become super affiliates. The Super Affiliate Network System members’ area has outlined everything that the veteran affiliate used to make millions as an affiliate.
The guide will help you set up campaigns, traffic resources, essential tools you need as an affiliate, and the veteran affiliate networks to achieve success.

Most amateur affiliates usually get frustrated as they might demand time to start making money. Those who succeed in getting little coins mainly do the following to earn;

They first become Super Affiliate System affiliates.

They promote the Super Affiliate System in multiple ways.

They convert the marketing leads they get into sales.

They receive a commission on every sale they make.

Affiliate marketing involves trading other people’s products and earning commissions from the sales you make. It’s an online business that can be done either with free or paid traffic. With the Super Affiliate System, one of the basic teachings you’ll get in the guide is how to make money by promoting the course itself using paid traffic Facebook ads.

### What’s in the Super Affiliate System?

The system is amongst the most comprehensive affiliate marketing courses on the market. The Super Affiliate System comprises more than 50 hours of content that takes about six weeks to complete. The Super Affiliate System also includes several video lectures and tutorials alongside several questions and homework assignments to test its retention.

### What Does the Super Affiliate Program Cover?

This program aims to provide affiliates with comprehensive ideas and tactics to become successful affiliate marketers. Therefore, their online video training course is comprehensive. Below are areas of information included within the modules;

Website creation

Niche selection

Content creation

Scaling

Tracking and testing

Affiliate networks

Click funnels

Besides the extensive information the creator has presented on these topics, he also went an extra mile to review the complete material and also guide marketers through the course.

### Who is the Super Affiliate System for?

There are a number of digital products out there that provide solutions to techniques to earn money online. But not all options offer real value for what you want. John gives people a Super Affiliate System free webinar to allow them to learn what the system entails. It will help if you spare time to watch it, as it takes 90 minutes to get through.
Below is a brief guide to who this system is for:

1. It is for beginners who can equip themselves with appropriate affiliate marketing skills. People who are still employed and want to have an alternative earning scheme fit here.

2. The system is also suitable for entrepreneurs who need to learn to earn money online, mainly using paid ads.

3. The Super Affiliate System also suits anyone who is looking for another alternative stream of income.

Making money online has many advantages at large. You have the flexibility to work from any place, in the comfort of your home, with just an internet connection. Even though John has stated that there are no special skills needed to achieve success in affiliate marketing, there are little basics necessary to keep you on track.
Having a proper mindset is also vital to attaining success in affiliate marketing. So, affiliates who believe in the system working for them need to be dedicated, focused, and committed.
They incorporate;

Keep in mind that you have more than \$895 in advertisements to get started. Furthermore, set aside a couple of dollars so that you keep on the right track.
There is also additional software you require to get started. It needs an extra of between \$80 and \$100 a month to get it.

### Where to Buy a Super Affiliate System?

If you are interested in joining this big team, you have to get into the Super Affiliate System on the official website, superaffiliatesystem.org, and get it from there. You have to pay their set fees to get their courses and other new materials within their learning scope.

### Super Affiliate System Review: Is it Worth the Money?

It depends on an individual whether the system is worth it or not. The system is worth the money for serious people who want to go deep into an affiliate marketing career and have the time to put the Super Affiliate System strategies into practice. Super Affiliate System Review, Is it worth your money?
But people who also look forward to becoming rich overnight need to get off as this is not your way. Hard work and commitment are paramount to getting everything that works best for you.

**Visit The Officail Website

#super affiliate system review #super affiliate system #super affiliate system 3 #super affiliate system 3.0 review #super affiliate system pro #super affiliate system john crestani

1599132316

## 5Kw Solar System in Brisbane

1 August 2020, Sunny Sky solarannounced you to launch a residential solar power system in Queensland, Australia. There are different sizes of houses with different energy requirements so one solar power system cannot fulfill every type of electricity need.

Whether energy need is low or higher they have announced a wide range of solar power system in Brisbane that includes 5KW solar panel system, 6Kw solar panel system, 10Kw solar panel system, and many more so that everyone can enjoy the benefits of solar energy.

Residential Solar Power System needs to be flexible because of the changing requirement of energy. As we know our energy needs hikes up in the summers more than winters because we use air conditioners, refrigerators (also used in winters but less than summers), fans. In winter we drop down these usages so the energy needs to go up and down according to the weather changing.

Some households have a high energy need, some have low, and mostly have the normal or average of high and low. Sunny Sky Solar offers expert’s advice to all the customers on call or personally because it is important to analyze the energy need, budget, location, and many other things before buying a solar power system for your home sweet home.

Their professionals analyze all these things and suggest you the best residential solar power system in Brisbane to reduce the energy costs and clean the environment as solar energy is green & clean energy.

At this time of announcing the residential solar panel system, the representative of Sunny Sky Solar has talked about some advantages of a residential solar power system. He said “get update yourself by the time is important because the latest technology will save you lots of money and time. The solar power system is the best technology in this era that can give you lots of benefits. Don’t get upset with the initial cost because after installing a solar power system at your house it will repay you the initial cost in two to three years. So, you are going to invest in a great deal if you are purchasing a solar panel system in Brisbane.”

He also added “Residential solar power system can save your pocket from getting loose every month for heavy electricity bills. You will earn money by producing solar energy and feeding your power supply grid as government, and mostly all the power suppliers give benefits to producing solar energy. You can easily earn money by feeding the power grid with your excess produced solar energy. You will use solar energy and save the excess by feeding the power grid this way.”

Sunny Sky Solar offering an efficient range of residential and commercial solar power system that includes 5KW solar panel system, 6.6Kw solar panel system, 10Kw solar panel system, and there are many more that you can select according to your energy needs and budget.
They provide expert assistance that will help you in choosing the best solar system for your house. Their experienced professionals work under the guidance of experts who ensures the perfections and safety at the time of installing and after the installation.

Installing a solar power system at your place will be more convenient with them because they work under the expert’s supervision that makes them perfect and faster. They ensure safety first at the time of installing because at that time family members are around the installing site and accidents can happen.

They also ensure the quality of products they used in installing and other solar products. If the products will be durable and efficient, the system will produce more electricity with higher efficiency for a longer period.
The main thing that matters while installing a solar power system at a residence is the roof situation, Sunny Sky Solar doesn’t work for doing business only. They first check the place or analyze from your information that your location is safe for installing a solar power system or not. If the find any problem they will suggest repairing it first because if you will put the solar power system at a less secure place and the solar system’s weight can damage it then repairing that place first should your main priority.
This shows their loyalty and caring behavior towards the customers.

#solar panel system #solar panel system in brisbane #5kw solar panel system #5kw solar panel system #10kw solar panel system #10kw solar panel system in brisbane