How To Install Linux, Apache, MySQL, PHP (LAMP) stack on Ubuntu 20.04

June 29, 2021

With the release of Ubuntu 20.04 LTS, things have become pretty susceptible and favorable for
the developers. LAMP is an open-source software that is usually installed to facilitate server
host vibrant websites and web applications that are written in PHP. In this manual, we'll tell you
everything you need to know about installing a LAMP stack on Ubuntu 20.04.
Requirements: You must have the Ubuntu 20.04 server. For this procedure to complete, you
require the non-root Ubuntu service with a sudo-facilitated user account along with a
fundamental firewall. Check out our guide to Initial server setup for Ubuntu 20.04 in case you
are not familiar with what it is.
Step 1: Apache Installation and Firewall Update
Being the most popular web server on the planet, Apache is a well-detailed server. It
encompasses an active community of users and is being used widely for a long time in history.
Thus, it has been known to become the most preferred choice of the developers.
To install Apache, use the following commands:

$ sudo apt update
$ sudo apt install apache2

If you haven't used sudo before this session, the server will instruct you to submit your
password to confirm that you possess the correct privileges as required to organize the system
packages with apt.
To substantiate the installation of Apache, you must press Y, followed by ENTER.
This leads to the completion of the installation. Now you require the firewall settings to be
adjusted properly so that you can allow HTTP traffic. UFW, however, has a distinct appeal form
that one can leverage to complete that. If you wish to run all of the presently accessible UFW
application profiles, run the following:

$ sudo ufw app list

Output like this will be displayed:

Available applications:
Apache
Apache Full
Apache Secure
OpenSSH
Let us see what these profiles actually mean:

● Apache: This profile is used to open port 80 only (ordinary, unencrypted web
traffic).
● Apache Full: this one is required to open both port 80 and 443 (TLS/SSL
encrypted traffic).
● Apache secure: This one, in contrast, opens only port 443.

As of now, allowing port 80 only for the connections is the most adequate choice since there is
a lack of a TLS/SSL certificate in the initial Apache installation.
Allow the traffic on port 80 using the following Apache profile:

$ sudo ufw allow in "Apache"

Output:
Status: active
To Action From
OpenSSH. ALLOW Anywhere
Apache ALLOW Anywhere
OpenSSH (v6)ALLOW Anywhere(v6)
Apache(v6) ALLOW Anywhere(v6)

The traffic on port 80 is allowed to do this.
To do a spot check, run:

http://your_server_ip

This will lead you to a web page that defaults on Ubuntu 20.04 Apache.
This web page is a sign of the correct installation of the web server.
Step 2: My SQL Installation
Once the web server is installed successfully, install the database system to have access to the
storage for your site. For this purpose, what could be better than My SQL? It's a popular
database management system that is utilized in PHP environments.
Use the following:

$ sudo apt install mysql-server

When instructed so, confirm installation by simply pressing the Y key followed by ENTER.
On completion of installation, you are advised to run a security script that has been provided as
a pre-installation on MySQL. This step will help you remove any insecurities in your database
system.

$ sudo MySQL_secure_installation

This leads you to a question of Validation.

VALIDATE PASSWORD PLUGIN can be used to test passwords and improve security. It checks
the strength of the password and allows the users to set only those passwords that are secure
enough. Would you like to set up a VALIDATE PASSWORD plugin?
Press y|Y for “Yes,” any other key for “No”:

A yes response will direct you to select a level of password validation.

Once down with the validation, test out the login processor MySQL by:

$ sudo mysql

To exit this console, type:

mysql> exit

Step 3: Installation of PHP
Now, let us first revise the steps. Apache for surveying the content has been installed, MySQL
for database management is also done and dusted. The next step is to install the PHP
component; this one processes the code, thereby displaying vibrant content to the end-user.
To install these packages, run:

$ sudo apt install php libapache2-mod-php-mysql

This sets up your installation. Now you can try out the PHP confirmation:

$ php -v

Output:
PHP 7.4.3 (cli) ( built: Jun 18 2021 20:26: 18 (NTS)
Copyright © The PHP Group
Zend Engine v3.4.0, Copyright © Zend technologies
with Zend OPcache v7.4.3, Copyright © Zend technologies

This step concludes your LAMP stack installation completely. Now the LAMP stack is
operational in your Ubuntu 20.04.

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This is a decorative image for: A Complete Guide To Customer Acquisition For Startups
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A Complete Guide To Customer Acquisition For Startups

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The problem with customer acquisition

As an organization, when working in a diverse and competitive market like India, you need to have a well-defined customer acquisition strategy to attain success. However, this is where most startups struggle. Now, you may have a great product or service, but if you are not in the right place targeting the right demographic, you are not likely to get the results you want.

To resolve this, typically, companies invest, but if that is not channelized properly, it will be futile.

So, the best way out of this dilemma is to have a clear customer acquisition strategy in place.

How can you create the ideal customer acquisition strategy for your business?

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You need to define your goals so that you can meet the revenue expectations you have for the current fiscal year. You need to find a value for the metrics –

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You need to understand who your current customers are and who your target customers are. Once you are aware of your customer base, you can focus your energies in that direction and get the maximum sale of your products or services. You can also understand what your customers require through various analytics and markers and address them to leverage your products/services towards them.

  • Choose your channels for customer acquisition

How will you acquire customers who will eventually tell at what scale and at what rate you need to expand your business? You could market and sell your products on social media channels like Instagram, Facebook and YouTube, or invest in paid marketing like Google Ads. You need to develop a unique strategy for each of these channels. 

  • Communicate with your customers

If you know exactly what your customers have in mind, then you will be able to develop your customer strategy with a clear perspective in mind. You can do it through surveys or customer opinion forms, email contact forms, blog posts and social media posts. After that, you just need to measure the analytics, clearly understand the insights, and improve your strategy accordingly.

Combining these strategies with your long-term business plan will bring results. However, there will be challenges on the way, where you need to adapt as per the requirements to make the most of it. At the same time, introducing new technologies like AI and ML can also solve such issues easily. To learn more about the use of AI and ML and how they are transforming businesses, keep referring to the blog section of E2E Networks.

Reference Links

https://www.helpscout.com/customer-acquisition/

https://www.cloudways.com/blog/customer-acquisition-strategy-for-startups/

https://blog.hubspot.com/service/customer-acquisition

This is a decorative image for: Constructing 3D objects through Deep Learning
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Image-based 3D Object Reconstruction State-of-the-Art and trends in the Deep Learning Era

3D reconstruction is one of the most complex issues of deep learning systems. There have been multiple types of research in this field, and almost everything has been tried on it — computer vision, computer graphics and machine learning, but to no avail. However, that has resulted in CNN or convolutional neural networks foraying into this field, which has yielded some success.

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By using the apparatus and datasets, you will be able to proceed with the 3D reconstruction from 2D datasets.

State-of-the-art Technology Used by the Datasets for the Reconstruction of 3D Objects

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The testing will also be done on the same parameters, which will also help to create a uniform, cluttered background, or both.

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The volumetric output will be done in both high and low resolution, and the surface output will be generated through parameterisation, template deformation and point cloud. Moreover, the direct and intermediate outputs will be calculated this way.

  • Network architecture used

The architecture used in training is 3D-VAE-GAN, which has an encoder and a decoder, with TL-Net and conditional GAN. At the same time, the testing architecture is 3D-VAE, which has an encoder and a decoder.

  • Training used

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Given below are some of the places where 3D Object Reconstruction Deep Learning Systems are used:

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  • It can be used in airport security, where concealed shapes can be used for guessing whether a person is armed or is carrying explosives or not.
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So, if you are planning to implement this technology, then you can rent the required infrastructure from E2E Networks and avoid investing in it. And if you plan to learn more about such topics, then keep a tab on the blog section of the website

Reference Links

https://tongtianta.site/paper/68922

https://github.com/natowi/3D-Reconstruction-with-Deep-Learning-Methods

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A Comprehensive Guide To Deep Q-Learning For Data Science Enthusiasts

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So, read on to know more.

What is Deep Q-Learning?

Deep Q-Learning utilizes the principles of Q-learning, but instead of using the Q-table, it uses the neural network. The algorithm of deep Q-Learning uses the states as input and the optimal Q-value of every action possible as the output. The agent gathers and stores all the previous experiences in the memory of the trained tuple in the following order:

State> Next state> Action> Reward

The neural network training stability increases using a random batch of previous data by using the experience replay. Experience replay also means the previous experiences stocking, and the target network uses it for training and calculation of the Q-network and the predicted Q-Value. This neural network uses openAI Gym, which is provided by taxi-v3 environments.

Now, any understanding of Deep Q-Learning   is incomplete without talking about Reinforcement Learning.

What is Reinforcement Learning?

Reinforcement is a subsection of ML. This part of ML is related to the action in which an environmental agent participates in a reward-based system and uses Reinforcement Learning to maximize the rewards. Reinforcement Learning is a different technique from unsupervised learning or supervised learning because it does not require a supervised input/output pair. The number of corrections is also less, so it is a highly efficient technique.

Now, the understanding of reinforcement learning is incomplete without knowing about Markov Decision Process (MDP). MDP is involved with each state that has been presented in the results of the environment, derived from the state previously there. The information which composes both states is gathered and transferred to the decision process. The task of the chosen agent is to maximize the awards. The MDP optimizes the actions and helps construct the optimal policy.

For developing the MDP, you need to follow the Q-Learning Algorithm, which is an extremely important part of data science and machine learning.

What is Q-Learning Algorithm?

The process of Q-Learning is important for understanding the data from scratch. It involves defining the parameters, choosing the actions from the current state and also choosing the actions from the previous state and then developing a Q-table for maximizing the results or output rewards.

The 4 steps that are involved in Q-Learning:

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In case the Q-table size is huge, then the generation of the model is a time-consuming process. This situation requires Deep Q-learning.

Hopefully, this write-up has provided an outline of Deep Q-Learning and its related concepts. If you wish to learn more about such topics, then keep a tab on the blog section of the E2E Networks website.

Reference Links

https://analyticsindiamag.com/comprehensive-guide-to-deep-q-learning-for-data-science-enthusiasts/

https://medium.com/@jereminuerofficial/a-comprehensive-guide-to-deep-q-learning-8aeed632f52f

This is a decorative image for: GAUDI: A Neural Architect for Immersive 3D Scene Generation
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GAUDI: A Neural Architect for Immersive 3D Scene Generation

The evolution of artificial intelligence in the past decade has been staggering, and now the focus is shifting towards AI and ML systems to understand and generate 3D spaces. As a result, there has been extensive research on manipulating 3D generative models. In this regard, Apple’s AI and ML scientists have developed GAUDI, a method specifically for this job.

An introduction to GAUDI

The GAUDI 3D immersive technique founders named it after the famous architect Antoni Gaudi. This AI model takes the help of a camera pose decoder, which enables it to guess the possible camera angles of a scene. Hence, the decoder then makes it possible to predict the 3D canvas from almost every angle.

What does GAUDI do?

GAUDI can perform multiple functions –

  • The extensions of these generative models have a tremendous effect on ML and computer vision. Pragmatically, such models are highly useful. They are applied in model-based reinforcement learning and planning world models, SLAM is s, or 3D content creation.
  • Generative modelling for 3D objects has been used for generating scenes using graf, pigan, and gsn, which incorporate a GAN (Generative Adversarial Network). The generator codes radiance fields exclusively. Using the 3D space in the scene along with the camera pose generates the 3D image from that point. This point has a density scalar and RGB value for that specific point in 3D space. This can be done from a 2D camera view. It does this by imposing 3D datasets on those 2D shots. It isolates various objects and scenes and combines them to render a new scene altogether.
  • GAUDI also removes GANs pathologies like mode collapse and improved GAN.
  • GAUDI also uses this to train data on a canonical coordinate system. You can compare it by looking at the trajectory of the scenes.

How is GAUDI applied to the content?

The steps of application for GAUDI have been given below:

  • Each trajectory is created, which consists of a sequence of posed images (These images are from a 3D scene) encoded into a latent representation. This representation which has a radiance field or what we refer to as the 3D scene and the camera path is created in a disentangled way. The results are interpreted as free parameters. The problem is optimized by and formulation of a reconstruction objective.
  • This simple training process is then scaled to trajectories, thousands of them creating a large number of views. The model samples the radiance fields totally from the previous distribution that the model has learned.
  • The scenes are thus synthesized by interpolation within the hidden space.
  • The scaling of 3D scenes generates many scenes that contain thousands of images. During training, there is no issue related to canonical orientation or mode collapse.
  • A novel de-noising optimization technique is used to find hidden representations that collaborate in modelling the camera poses and the radiance field to create multiple datasets with state-of-the-art performance in generating 3D scenes by building a setup that uses images and text.

To conclude, GAUDI has more capabilities and can also be used for sampling various images and video datasets. Furthermore, this will make a foray into AR (augmented reality) and VR (virtual reality). With GAUDI in hand, the sky is only the limit in the field of media creation. So, if you enjoy reading about the latest development in the field of AI and ML, then keep a tab on the blog section of the E2E Networks website.

Reference Links

https://www.researchgate.net/publication/362323995_GAUDI_A_Neural_Architect_for_Immersive_3D_Scene_Generation

https://www.technology.org/2022/07/31/gaudi-a-neural-architect-for-immersive-3d-scene-generation/ 

https://www.patentlyapple.com/2022/08/apple-has-unveiled-gaudi-a-neural-architect-for-immersive-3d-scene-generation.html

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