Trending February 2024 # Evaluating & Optimizing Code Performance In R # Suggested March 2024 # Top 9 Popular

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Optimizing R code can significantly improve the performance of R scripts and programs, making them run more efficiently. This is especially important for large and complex data sets, as well as for applications that need to be run in real-time or on a regular basis.

In this RStudio tutorial, we’ll evaluate and optimize an R code’s performance using different R packages, such as tidyverse and data.table. As an example, we’ll see how long it takes for RStudio to read a large CSV file using the read.csv ( ) function, the tidyverse package, and the data.table package.

Open RStudio. In the R script, assign the file extension to a variable.

You need to use the system.file ( ) function to determine how long it takes to perform a function or operation. Since we want to evaluate how long it takes to open a file, write read.csv (df) in the argument.

When you run the code, the Console will show you the time it took to open the file. The elapsed column shows how long it took for the CPU to perform the R code. The results show that it took RStudio 31.93 seconds which is a significant amount of time. This loading time is impractical if you’re always working with large datasets.

One of the ways you can optimize the performance of your R code is by using the tidyverse package. Doing so reduces the time from 30 to 5 seconds.

Take note that in order to read the file, you need to use the read_csv ( ) function.

The tidyverse package improves loading time in R through the use of the readr package, which provides a set of fast and efficient functions for reading and writing data. The readr package provides functions such as read_csv ( ) and read_table ( ) that can read large data sets quickly and efficiently.

Another optimization method in R is using the data.table package. This is free to download in the internet.

Note that when using this package, you need to write the fread ( ) function instead of chúng tôi ( ). When you run this together with your code, you can see that the loading time is reduced to 2.25 seconds.

To compare the performance between each method, you can use the microbenchmark ( ) function.

The microbenchmark ( ) function in R is a tool for measuring the performance of R code. It provides a simple and easy-to-use interface for benchmarking the execution time of R expressions.

A great thing about this function is you’re able to set how many times the process is repeated. This gives more precise results. You’re also able to identify if the results are consistent.

If you’re having trouble reading a CSV file in Power BI, RStudio can do it for you. There are other options in R that you can use to optimize your code’s performance. But data.table is highly recommended because of its simplicity.

Optimizing R code is an important step in ensuring that your R scripts run efficiently. There are several techniques and tools that can be used to optimize R code, such as using the tidyverse package for data manipulation, using the data.table package for large data sets, and using the microbenchmark package for measuring the performance of R code.

It’s also important to keep in mind good coding practices such as using vectorized operations instead of loops, making use of built-in functions instead of writing your own, and being mindful of the memory usage of your code.

All the best,

George Mount

You're reading Evaluating & Optimizing Code Performance In R

Applying The Craap Test & Evaluating Sources

The CRAAP test is a method to evaluate the credibility of a source you are using.

When conducting research, it’s important to use credible sources. They ensure the trustworthiness of your argument and strengthen your conclusions.

There are a lot of sources out there, and it can be hard to determine whether they are sufficiently credible, but doing so is an important information literacy skill. To help, librarians at California State University developed the CRAAP test in 2004.

What is the CRAAP test?The CRAAP test has 5 main components

Currency: Is the source up to date?

Relevance: Is the source relevant to your research?

Authority: Where is the source published? Who is the author? Are they considered reputable and trustworthy in their field?

Accuracy: Is the source supported by evidence? Are the claims cited correctly?

Purpose: What was the motive behind publishing this source?

Here are some examples using different sources.

Books

While books are often considered among the most reliable sources, it is still important to pay attention to the author, publisher, and motive behind the publication.

Some books are commercially-motivated or sponsored, which affects their credibility. As a general rule, academic publishers and university presses are often considered credible.

When evaluating a book, ask yourself:

Is this the most current book available on the topic that I’m studying?

Publishing multiple editions is a signal that the author is motivated to keep the information current.

Are they a trusted expert in their field?

It should be clear what criteria the publishing house follows for editing, fact-checking, and publishing.

The main purpose should be to educate the reader, not to try to convince them to buy or believe something.

Journal articles

Academic journals are one of the best resources you can turn to during your research process. They are often peer reviewed, which means they have undergone a rigorous editing process prior to publication.

When evaluating a journal article, ask yourself:

Who participates on each review panel should be readily available within each article.

A quick Google Scholar search will show you if the author has published other articles or been cited by other scholars. The function called “Cited By” can show you where the author has been cited. A high number of “Cited By” results can often be a measurement of credibility.

Has it had to retract many articles?

You can find high-quality journals via Google Scholar or your institution’s library. Your library also may have access to journals behind paywalls.

A few examples of databases where you can find well-regarded academic journals are: JSTOR, EBSCO, Sage Publications, PubMed, and Project Muse.

News articles

News articles can be tricky to evaluate. Many news sources are eminently reliable, with long histories of fact-based and trustworthy journalism.

In the age of “fake news”, it’s more important than ever to carefully evaluate news articles, especially those found online. News sources are often best used to situate your argument or ground your research, with more academic sources making up the “meat” of your analysis.

When evaluating a news source, ask yourself:

Reputable news sources commit to fact-checking their content, issuing corrections and withdrawals if necessary, and only associating with credible journalists.

Credible journalists commit to reporting factual information in an unbiased manner, and prescribe to a code of ethics shared within the profession.

The article shouldn’t favor one side of the story or one point of view, but present all sides fairly.

Links in news articles can often be a great place to find valuable primary source material.

Note that letters to the editor and other types of opinion pieces (often called op-eds) are opinion-based by nature, and usually not credible.

Web sources

While very common, websites are often among the most challenging to evaluate for credibility.

They are not subject to the peer-review or rigorous editing process that academic journals or books go through, and websites like Wikipedia can be altered by anyone at any time.

While you will undoubtedly use websites in your research, exercise caution here.

A good first step is to take a look at the URL.

Different URLs denote different types of web sources

Educational resources end in .edu, and are largely considered the most trustworthy in academic settings.

Government-affiliated websites end in .gov, and are often considered credible.

When analyzing web sources, ask yourself:

If you are studying a topic that is frequently changing, such as cutting-edge research or current events, make sure that the information is up to date. If your subject is not as time-sensitive, such as history, the publication date may not matter as much. However, you should still ensure that the website is updated regularly. A website that is out-of-date is often not credible.

What kinds of sources do they lead to? Are those sources credible?

Flashy fonts, pop-ups, and a distracting layout can also be a sign that the content is not credible.

There should be an “About” page denoting the author’s credentials and establishing their expertise in the field. Anonymous content is generally not considered credible.

Try to stick with sources published for educational purposes. Sources attempting to sell you something or convince you of a particular point of view or course of action are not considered credible.

Other interesting articles

If you want to know more about ChatGPT, AI tools, citation, and plagiarism, make sure to check out some of our other articles with explanations and examples.

Frequently asked questions about the CRAAP test Cite this Scribbr article

George, T. (2023, May 31). Applying the CRAAP Test & Evaluating Sources. Scribbr. Retrieved July 17, 2023,

Cite this article

Evaluating Mobile Transportation Technology: What To Consider

As a small, family-owned waste disposal company, Daily Disposal always relied on pen and paper to document routes and manage customer accounts. But as the company began to grow, it became apparent that a more efficient way to route trucks and document trash pickup was needed.

With the help of dashboard-mounted tablets, smartphones and mobile apps, Daily Disposal was able to significantly increase efficiency and save money.

Daily Disposal is just one of many transportation and logistics companies reaping the benefits of mobile transportation technology. They understand that the right mobile devices and applications can make a real difference by helping to keep drivers safe, ensuring compliance, enabling vehicle monitoring, tracking fleet locations and driving down cost per mile.

For a transportation business, a successful deployment should begin with the devices themselves. Many fleets will be satisfied with a device like the Samsung Galaxy Tab E, which features a large screen and powerful quad core processor to make it easy for drivers to access and edit information. In more demanding environments companies will benefit from rugged devices, with a durable MIL-STD-810G rated design built to withstand road vibrations and bumps. To ensure stability, also consider a rugged mounting system with Global Distribution System (GDS) connectivity. This combination keeps devices secure while connected to power and maintaining continuous data communications.

Organizations should also consider the device’s GPS capability, which is critical for vehicle tracking, as well as a robust security platform built from the chip up to ensure that customer and business data remain secure at all times.

Fleet Software Improves Productivity

For transportation and logistics companies, the benefits come from the synergy between hardware and software tools, generally in the form of fleet telematics and fleet management solutions. These types of solutions are more important than ever, since they can help companies comply with the Electronic Logging Device (ELD) mandate now in force across the country. This rule requires commercial trucks in long-haul service to electronically record driving times and Hours of Service data on a device connected to the vehicle’s engine.

This device can be a smartphone or tablet. One report found that nearly three-quarters of fleets are either currently using telematics or plan to do so in the next year. Of those implementing new technologies, 41 percent said they were doing it to increase regulatory compliance.

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Some of the most important features to look for in fleet telematics and fleet management include:

Monitoring vehicle diagnostics: Fleet management software can significantly improve vehicle maintenance by monitoring diagnostics and performance on a continual basis. This information can be instrumental in understanding when vehicles may require maintenance. In addition to helping avoid a catastrophic event on the road, tracking this data enables pre-emptive maintenance and promotes efficient scheduling.

Fleet-optimized routing: With this capability, drivers can add or remove stops, navigate around heavy traffic and accidents, and create efficient routes that reduce driving time and improve customer service. Combined with powerful and effective mobile devices, the net result is an easier life for drivers, along with timelier deliveries for customers.

Equipping drivers’ devices with fleet telematics capabilities can dramatically improve everything from productivity to vehicle safety, especially for small fleets and owner operators, which comprise the vast majority of North American trucking carriers.

Get our free roadmap to the future of fleet management to learn more about how to transform the way you manage your fleet, increase efficiency and better retain drivers. See what connected fleet solutions are available to help you meet company and driver needs.

Evaluating User Experience: Dogemiyagi Vs. Solana And Avalanche

In the world of cryptocurrency, user experience plays a vital role in attracting and retaining users. The user experience or UX is what visitors use to form an impression of the platform and will ultimately determine whether they become users.

This article aims to evaluate the user experience of DogeMiyagi and compare it with two other popular platforms, Solana and Avalanche. By examining factors such as ease of use, transaction speed, and community support, we investigate why these platforms are the benchmark for excellent UX.

Solana – Transaction Speed And Scalability

Solana, a prominent player in the cryptocurrency industry, focuses on transaction speed and scalability. While Solana may not explicitly emphasize rewards or altcoin exploration, its cutting-edge technology attracts users seeking fast and efficient transactions.

Solana’s user experience centers around its high-performance blockchain, capable of handling a vast number of transactions per second. Its exceptional transaction speed ensures minimal latency and enables users to execute trades swiftly. The platform’s architecture prioritizes scalability, catering to the demands of a growing user base without compromising transaction speed.

The Solana community is known for its active and engaged members. Through forums, social media platforms, and developer communities, Solana fosters a collaborative environment that encourages knowledge-sharing and community-driven initiatives. The support and engagement within the Solana community contribute to an enriching user experience.

Avalanche – Innovation And Community Engagement

Avalanche, another prominent platform in the cryptocurrency realm, distinguishes itself through innovation and community engagement. While not explicitly focused on rewards or altcoin exploration, Avalanche offers a dynamic ecosystem for users to explore and engage with emerging crypto projects.

Transaction speed on Avalanche is commendable, leveraging its consensus protocol to achieve near-instant finality. The platform’s sub-second transaction times ensure efficient trading and provide users with a seamless experience. Avalanche’s focus on scalability further enhances its transaction speed, making it an attractive choice for users who value swift and reliable transactions.

Avalanche’s community is highly engaged and actively participates in the platform’s growth and development. Through community-driven initiatives, governance mechanisms, and regular updates, Avalanche fosters a sense of belonging and encourages users to contribute to the platform’s ecosystem. This high level of community engagement enhances the user experience on Avalanche.

DogeMiyagi – Rewards And Altcoin Exploration

DogeMiyagi is capturing the attention of enthusiasts with its unique concept and value creation, creating an engaging platform for users looking to explore the world of alternative cryptocurrencies. Its primary focus lies in rewards, making it an attractive option for those seeking additional incentives.

The DogeMiyagi aims to create a community that is vibrant and supportive. This attracts users who share a passion for rewards, altcoin exploration, and meme coins. The platform actively engages with its community through social media channels, providing regular updates, educational content, and an avenue for users to connect with like-minded individuals. This sense of community support enhances the overall user experience on DogeMiyagi.

What Can We Learn From Them?

In evaluating the user experience of DogeMiyagi, Solana, and Avalanche, we find that each platform brings unique strengths to the fintech industry. DogeMiyagi’s focus on rewards and altcoin exploration, coupled with its user-friendly interface and referral system attracts reward-hungry investors.

Solana’s emphasis on transaction speed and scalability, along with its robust security measures and active community, caters to users who prioritize fast and reliable transactions. Avalanche’s commitment to innovation, community engagement, and secure transactions makes it an attractive choice for users seeking a dynamic and secure platform.

As the cryptocurrency industry continues to evolve, users need to consider their individual needs and preferences when selecting a platform. Users can make informed decisions that align with their goals by evaluating the factors of ease of use, transaction speed, security, and community support. Whether it’s rewarding, altcoin exploration, transaction speed, or community engagement, the cryptocurrency landscape offers a diverse range of options to cater to the needs of every user.

For More On DogeMiyagi:

Site Audits: Evaluating The Seo, Content & Social For 3 Websites

The SEJ ThinkTank hosted our second live site audit webinar on March 4.

This time, we decided to cover just three sites (instead of four like we did in our first audit), which would allow the panel to spend more time drilling down into issues the sites might have.

This article will cover the tools and recommendations we covered.

The audit was moderated by SEJ’s Chief Social Media Strategist Brent Csutoras, and the SEJ panel included the expertise of our:

Executive Editor Kelsey Jones.

Lead News Writer Matt Southern.

Social Media Manager Debbie Miller.

For this audit, we choose two sites to audit. The team spent time before the audit researching the sites and noting recommendations:

AllstateFoundation.org

This site was particularly interesting because we really enjoy working with nonprofits and this particular foundation is tied to such a big brand. The site owner said they have been performing their own site audits, but were looking for tips. A few of the issues noted by the panel included missing chúng tôi files, minimum social presence, and a lack of CTAs on the home page.

MeasurIT

This Irish-based B2B company was chosen because many B2B businesses struggle with online marketing. The site owner was wondering if the website was providing enough information about their product Tideflex Duckbill Valves. A few recommendations from the panel included including a location page, moving the social buttons above the fold, and increasing activity on the blog.

Wild Card Site: Olympus-Tours

One of the most exciting parts of doing the live site audit is our Wild Card site! This is a site that is chosen live from the webinar audience – which none of the panelist have looked at before. No prep, no rehearsals, just an audit in real-time!

Watch the full webinar here:

Tools of the Trade

Through out the site audit, the panel mentioned several tools that can be used to check different aspects of your site.

Screaming Frog

This is a free program allows you to swiftly analyze and audit your site from and onsite SEO perspective. Matt uses it to uncover a wide variety of SEO issues, including duplicate content, missing chúng tôi files, and missing H1 tags.

Page Speed Insights

This Google Developer tool offers insights into how your website could run faster. This is another free tool that looks at how fast your site load on both mobile and desktop computers. It also rates your site’s problems in order of urgency.

Mobile-Friendly Test

This is another free tool from the Google development team. This will look at how mobile friendly your site is, which will be a big deal in the coming year according to Matt (and Google!).

Visit our #SEJThinkTank archive to listen to other SEJ Marketing ThinkTank webinars.

Join Us For Our Next Webinar! KPIs, Metrics & Benchmarks That Matter For SEO Success In 2023

Reserve my Seat

Evaluating & Optimizing Code Performance In R

Optimizing R code can significantly improve the performance of R scripts and programs, making them run more efficiently. This is especially important for large and complex data sets, as well as for applications that need to be run in real-time or on a regular basis.

In this RStudio tutorial, we’ll evaluate and optimize an R code’s performance using different R packages, such as tidyverse and data.table. As an example, we’ll see how long it takes for RStudio to read a large CSV file using the read.csv ( ) function, the tidyverse package, and the data.table package.

Open RStudio. In the R script, assign the file extension to a variable.

You need to use the system.file ( ) function to determine how long it takes to perform a function or operation. Since we want to evaluate how long it takes to open a file, write read.csv (df) in the argument.

When you run the code, the Console will show you the time it took to open the file. The elapsed column shows how long it took for the CPU to perform the R code. The results show that it took RStudio 31.93 seconds which is a significant amount of time. This loading time is impractical if you’re always working with large datasets.

One of the ways you can optimize the performance of your R code is by using the tidyverse package. Doing so reduces the time from 30 to 5 seconds.

Take note that in order to read the file, you need to use the read_csv ( ) function.

The tidyverse package improves loading time in R through the use of the readr package, which provides a set of fast and efficient functions for reading and writing data. The readr package provides functions such as read_csv ( ) and read_table ( ) that can read large data sets quickly and efficiently.

Another optimization method in R is using the data.table package. This is free to download in the internet.

Note that when using this package, you need to write the fread ( ) function instead of chúng tôi ( ). When you run this together with your code, you can see that the loading time is reduced to 2.25 seconds.

To compare the performance between each method, you can use the microbenchmark ( ) function.

The microbenchmark ( ) function in R is a tool for measuring the performance of R code. It provides a simple and easy-to-use interface for benchmarking the execution time of R expressions.

A great thing about this function is you’re able to set how many times the process is repeated. This gives more precise results. You’re also able to identify if the results are consistent.

If you’re having trouble reading a CSV file in Power BI, RStudio can do it for you. There are other options in R that you can use to optimize your code’s performance. But data.table is highly recommended because of its simplicity.

Optimizing R code is an important step in ensuring that your R scripts run efficiently. There are several techniques and tools that can be used to optimize R code, such as using the tidyverse package for data manipulation, using the data.table package for large data sets, and using the microbenchmark package for measuring the performance of R code.

It’s also important to keep in mind good coding practices such as using vectorized operations instead of loops, making use of built-in functions instead of writing your own, and being mindful of the memory usage of your code.

All the best,

George Mount

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