A Discussion on Data Structures 

Today, let’s talk about Queues. Since my last post, I changed things in the Telemetry repository a bit — for one, I wrote a decent README and added a TODO in there. Implementing Queues was to be done on _priority (😃), _so here we are!

What are Queues?

As always, let me begin with what a Queue is. According to trusty old Cplusplus.com 

Queues are a type of container adaptor, specifically designed to operate in a FIFO context (first-in first-out), where elements are inserted into one end of the container and extracted from the other.

Diagrammatically, a queue can be represented like this:

A standard FIFO Queue with indications for front and back.

Fig. 1. A standard FIFO Queue.

As in Fig. 1, the Queue allows entry from the Back and exit from the Front, keeping everybody in line and awaiting their turn. Fairly simple.

Reading the Cplusplus.com entry further, we can see that a Queue is _also _a container adaptor, and it can be implemented using either a Vector or a List because the underlying container should support functions like push_back() and pop_front(), apart from allowing us access to the front and back elements. Luckily for us, we can rely on our Lists implementation to run the show here!

So now that we know how a Queue is supposed to behave, let’s take a gander at the UML Class Diagram for a Queue.

Image for post

Fig. 2. The UML Class Diagram for our Queue.

There isn’t any need for special data members in the class. The static queue_count and the ID variables are meant for a more diagnostic purpose than anything else. In case multiple objects are being used concurrently, they identify the offending object when an Exception is thrown. Speaking of which, I did a little something since the last article…

For the sake of simplicity, I discarded the StackUnderflowExceptionEmptyListException and every other ThisAndThatException in favor of a nice and clean _EmptyContainerException. _It still behaves as before though — if we try to rummage around an empty container, it spits out the ID of the container and tells us there’s nothing to look at there!

Operations on Queues

The following operations must be available in Queues:

  1. push(): Push an element from the _back _of the Queue.
  2. pop(): Pop an element from the _front _of the Queue. If the Queue is empty, throw an EmptyContainerException.
  3. front(): Access the _front _of the Queue but don’t remove the element. If the Queue is empty, throw an EmptyContainerException.
  4. back(): Access the _back _of the Queue but _don’t remove _the element. If the Queue is empty, throw an EmptyContainerException.
  5. size(): Return the current size of the Queue.
  6. empty(): Return if the Queue is empty or not.

#data-structures #programming #cpp #tutorial #data analysis

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A Discussion on Data Structures 
 iOS App Dev

iOS App Dev

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Your Data Architecture: Simple Best Practices for Your Data Strategy

If you accumulate data on which you base your decision-making as an organization, you should probably think about your data architecture and possible best practices.

If you accumulate data on which you base your decision-making as an organization, you most probably need to think about your data architecture and consider possible best practices. Gaining a competitive edge, remaining customer-centric to the greatest extent possible, and streamlining processes to get on-the-button outcomes can all be traced back to an organization’s capacity to build a future-ready data architecture.

In what follows, we offer a short overview of the overarching capabilities of data architecture. These include user-centricity, elasticity, robustness, and the capacity to ensure the seamless flow of data at all times. Added to these are automation enablement, plus security and data governance considerations. These points from our checklist for what we perceive to be an anticipatory analytics ecosystem.

#big data #data science #big data analytics #data analysis #data architecture #data transformation #data platform #data strategy #cloud data platform #data acquisition

Gerhard  Brink

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Getting Started With Data Lakes

Frameworks for Efficient Enterprise Analytics

The opportunities big data offers also come with very real challenges that many organizations are facing today. Often, it’s finding the most cost-effective, scalable way to store and process boundless volumes of data in multiple formats that come from a growing number of sources. Then organizations need the analytical capabilities and flexibility to turn this data into insights that can meet their specific business objectives.

This Refcard dives into how a data lake helps tackle these challenges at both ends — from its enhanced architecture that’s designed for efficient data ingestion, storage, and management to its advanced analytics functionality and performance flexibility. You’ll also explore key benefits and common use cases.

Introduction

As technology continues to evolve with new data sources, such as IoT sensors and social media churning out large volumes of data, there has never been a better time to discuss the possibilities and challenges of managing such data for varying analytical insights. In this Refcard, we dig deep into how data lakes solve the problem of storing and processing enormous amounts of data. While doing so, we also explore the benefits of data lakes, their use cases, and how they differ from data warehouses (DWHs).


This is a preview of the Getting Started With Data Lakes Refcard. To read the entire Refcard, please download the PDF from the link above.

#big data #data analytics #data analysis #business analytics #data warehouse #data storage #data lake #data lake architecture #data lake governance #data lake management

Cyrus  Kreiger

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4 Tips To Become A Successful Entry-Level Data Analyst

Companies across every industry rely on big data to make strategic decisions about their business, which is why data analyst roles are constantly in demand. Even as we transition to more automated data collection systems, data analysts remain a crucial piece in the data puzzle. Not only do they build the systems that extract and organize data, but they also make sense of it –– identifying patterns, trends, and formulating actionable insights.

If you think that an entry-level data analyst role might be right for you, you might be wondering what to focus on in the first 90 days on the job. What skills should you have going in and what should you focus on developing in order to advance in this career path?

Let’s take a look at the most important things you need to know.

#data #data-analytics #data-science #data-analysis #big-data-analytics #data-privacy #data-structures #good-company

Cyrus  Kreiger

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How Has COVID-19 Impacted Data Science?

The COVID-19 pandemic disrupted supply chains and brought economies around the world to a standstill. In turn, businesses need access to accurate, timely data more than ever before. As a result, the demand for data analytics is skyrocketing as businesses try to navigate an uncertain future. However, the sudden surge in demand comes with its own set of challenges.

Here is how the COVID-19 pandemic is affecting the data industry and how enterprises can prepare for the data challenges to come in 2021 and beyond.

#big data #data #data analysis #data security #data integration #etl #data warehouse #data breach #elt

Macey  Kling

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Applications Of Data Science On 3D Imagery Data

CVDC 2020, the Computer Vision conference of the year, is scheduled for 13th and 14th of August to bring together the leading experts on Computer Vision from around the world. Organised by the Association of Data Scientists (ADaSCi), the premier global professional body of data science and machine learning professionals, it is a first-of-its-kind virtual conference on Computer Vision.

The second day of the conference started with quite an informative talk on the current pandemic situation. Speaking of talks, the second session “Application of Data Science Algorithms on 3D Imagery Data” was presented by Ramana M, who is the Principal Data Scientist in Analytics at Cyient Ltd.

Ramana talked about one of the most important assets of organisations, data and how the digital world is moving from using 2D data to 3D data for highly accurate information along with realistic user experiences.

The agenda of the talk included an introduction to 3D data, its applications and case studies, 3D data alignment, 3D data for object detection and two general case studies, which are-

  • Industrial metrology for quality assurance.
  • 3d object detection and its volumetric analysis.

This talk discussed the recent advances in 3D data processing, feature extraction methods, object type detection, object segmentation, and object measurements in different body cross-sections. It also covered the 3D imagery concepts, the various algorithms for faster data processing on the GPU environment, and the application of deep learning techniques for object detection and segmentation.

#developers corner #3d data #3d data alignment #applications of data science on 3d imagery data #computer vision #cvdc 2020 #deep learning techniques for 3d data #mesh data #point cloud data #uav data