(testing signal)

Month: August 2021

5 Unconventional Career Tips From Top Women In Data Science

Everything we do today relies on and/or uses data in some way or another. Research on any topic – from covid to climate to investing to your favorite sports team. Your smartphone. Your computer. Searching terms in Google or Bing or Yahoo or on Twitter or Instagram or on any website or platform. The list goes on and on and on…

Those searches use terms and algorithms programmed into it by someone – and 82% of the time, that person is a male (and white).


3D Printing Your Own Sturdy Lens Caps

Lens caps are important for protecting expensive camera lenses from damage. Dust, grit, and other nasty things will all quickly spoil the quality of a shot, and can even permanently damage a lens if you’re unlucky. However, lens caps are also lost quite easily. Thus, it’s useful to be able to make your own, and [DSLR CNC DIY] has the low down on how to do it. 

The benefit of printing your own lens caps is customization. No matter the oddball size and shape of your lens, when you’re 3D printing your own cap, you can design it to fit. The video also shows off the benefits of being able to embed text right into the body of the cap, so you’re never confused as to which cap goes with which lens. The caps use the metal lever from a binder clip in order to provide the clamping force necessary to hang on to the lens.


Trading Strategy: Understanding the Trader's Winning Methods

Aashish Sharma Hacker Noon profile picture

Trading is the activity of speculating in the financial markets. The goal is to take advantage of market fluctuations to pocket substantial sums between the time of purchasing an asset and its resale. The reverse operation is also possible because it is possible in trading to sell assets that one does not have. Trading can be done both on a market of shares (stock market), the currency market (Forex trading), or cryptocurrencies. The most important thing is knowing which trading strategies to apply to make money.

Below we have selected 6 major trading strategies that can be used by professional traders as well as by individuals. The advantages and disadvantages of each method are explained to you simply for beginners. And for each strategy, an expert video gives you practical advice to quickly implement it and start making money!


How to Set a Routine for Learning Data Science

The first thing you need to determine is how much time you are able to dedicate to studying. It is important to be able to set aside decent blocks of time for periods of intensive study. Ideally, these should be at least two hours in length, and I recommend trying to set aside time for at least five of these periods per week.

In order to stick to a learning schedule that includes consistent blocks of time, it needs to be realistic and needs to fit around your other commitments.

To determine how much time you realistically have available for these intense periods of study I advise first taking a pen and paper and writing down the time commitments you already have on a typical day, including weekends. Let’s say you have to work for 8 hours, you need to sleep (8 hours), you then need time for exercise, eating, household chores and family.


Taliban leaders mark Afghanistan victory by walking across Kabul airport runway

The Taliban’s leaders have symbolically marked their victory in Afghanistan by walking across Kabul international airport’s runway following the withdrawal of US forces.

“The world should have learned its lesson and this is the enjoyable moment of victory,” Taliban spokesman Zabihullah Mujahid said in a livestream posted by a militant.

Later speaking to Al-Jazeera Arabic on the airport’s runway, Mr Mujahid rejected having a caretaker government and insisted that Kabul remained safe.

“There will be security in Kabul and people should not be concerned,” he said.

Earlier, US Secretary of State Antony Blinken said “under 200, likely closer to 100” Americans wishing to leave remain in Afghanistan.

Mr Blinken said the US will continue to try to get Americans and Afghans out of the country, and will work with Afghanistan’s neighbours to secure their departure either over land or by charter flight once the Kabul airport reopens.


Simple Tactile Drawing Pad is Quite Impressive

Everyone needs to be able to communicate and express themselves, even people with blindness or low vision. Embossing paper with some kind of stylus is a popular, low-tech option, but there’s one big problem: pressing paper from the top leaves a dent, and so letters have to either be written backwards or else felt-read backwards. For this year’s Hackaday Prize, [Subir Bhaduri] is working on a fantastic tool that embosses positively, and from the top side of the paper.

Positive emboss marks from a clever pantograph and a pair of stylii.Here’s how it works: a pointed stylus pushes upward from the underside and meets up with a concave receiver on the top side through the paper. The two stylii move in concert thanks to the pantograph-inspired parallelogram setup, which we imagine would make it easier for someone with low vision to keep their bearings as they move around the page.


NLP Insights for the Penguin Café Orchestra

We give an example of how to use Expert.ai and Python to investigate favorite music albums.

Sponsored Post.

By Laura Gorrieri, expert.ai

Please find the notebook version of this thread here.

Let’s build a small application to investigate one of my favourite artists. They are called “The Penguin Café Orchestra” and if you don’t know them you are going to find out what they are about.

Our dataset: a list of their album’s reviews that I took from Piero Scaruffi’s website and saved in a dedicated folder.

Our goal: to understand more about an artist using album reviews.

Our practical goal: to see how expert.ai’s NL API works and what it can do.

What is The Penguin Café Orchestra about?


What Does Super-Investor Peter Thiel Think You Should Read?

Peter Thiel, whose name is practically synonymous with successful high-tech investing, will be speaking at COSM 2021. He has also offered some thoughts on books worth reading:

Here are three of them, courtesy Kevin Rooke:

The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers by Ben Horowitz (Harper Business 2014): From Thiel: “Every management guide presumes that all great companies follow a formula. But successful startups don’t imitate; they build innovations that can’t be copied. Ben Horowitz knows no recipe guarantees success. He has written the first true guide for protecting a startup from self-sabotage.”

Bloodlands: Europe Between Hitler and Stalin by Timothy Snyder (Basic Books, 2010) From Thiel: “He tells how the Nazis and the Soviets drove each other to ever more murderous atrocities as they fought to dominate Eastern Europe in the 1930s and ’40s.


Calculate Like It’s 1989 With This HP15C Emulator


Back in the day, your choice of calculator said a lot about your chops, and nothing made a stronger statement than the legendary Hewlett-Packard Voyager series of programmable calculators. From the landscape layout to the cryptic keycaps to the Reverse Polish Notation, everything about these calculators spoke to a seriousness of purpose.

Sadly, these calculators are hard to come by at any price these days. So if you covet their unique look and feel, your best bet might be to do like [alxgarza] and build your own Voyager-series emulator. This particular build emulates the HP15C and runs on an ATMega328. Purists may object to the 192×64 LCD matrix display rather than the ten-digit seven-segment display of the original, but we don’t mind the update at all.


Machine learning algorithm revolutionizes how scientists study behavior

Credit: CC0 Public Domain

To Eric Yttri, assistant professor of biological sciences and Neuroscience Institute faculty at Carnegie Mellon University, the best way to understand the brain is to watch how organisms interact with the world.

“Behavior drives everything we do,” Yttri said.

As a behavioral neuroscientist, Yttri studies what happens in the brain when animals walk, eat, sniff or do any action. This kind of research could help answer questions about neurological diseases or disorders like Parkinson’s disease or stroke. But identifying and predicting animal behavior is extremely difficult.

Now, a new unsupervised machine learning algorithm developed by Yttri and Alex Hsu, a biological sciences Ph.D.


Git Cheat Sheet for Data Scientists

Getting started

Photo by Roman Synkevych on Unsplash

Data Applications for Analytics

A new generation of tools bridging the gap between technical and non-technical users

Photo by Jerry Zhang on Unsplash

Reporting From BornHack 2021: Hacker Camps Making It Through The Pandemic

In a normal summer we would be spoiled for choice here in Europe when it came to our community’s events, with one big camp and a host of smaller ones near and far. Only the most hardcore of travelers manage to make it to all of them, but it’s usually possible to take in at least one or two over the season. But of course, this isn’t a normal summer. Many of us may now be vaccinated against COVID-19, but we remain in the grip of a global pandemic. The massive Dutch MCH camp was postponed until 2022, and most of the smaller camps have fallen by the wayside due to uncertainty. But one hacker camp carried on.

BornHack in Denmark was the world’s only in-person summer hacker event of 2020, and on its return last week made it the only such event in Europe for 2021.


Facebook Head of Privacy Research Liz Keneski discusses new research award opportunity

Last year, we offered a first-ever research award opportunity for academics centered around experiences and expectations with digital privacy. We received great responses from the global community, and we’re pleased to continue this initiative again with the launch of a new request for proposals in the same space.

View RFP

To learn more about this new RFP, we reached out to Liz Keneski, Head of Privacy Research at Facebook. In this Q&A, Keneski discusses her team, the impact of collaborating with academia, and what this year’s RFP is about.

Q: What is your role at Facebook, and what does your team do?

Liz Keneski: I have the privilege to lead and support the Privacy Research team. We study privacy from a number of lenses, including understanding people’s privacy needs across topics like content controls, accessing and downloading their data, and privacy settings and data permissions.… Read more...

Ten Winners of the Hackaday Prize Supportive Tech Challenge

Congratulations to the ten projects that have been selected to receive $500, and continue to the finals of the 2021 Hackaday Prize! Each of these are a different take on the Reimagine Supportive Tech Challenge that sought ways to make great hardware ideas work for more people.

Ebooks have made it possible for everyone to have a library in their pocket, and that has included the visually impaired as text-to-speech can read the printed word. But that’s not a complete replacement for reading for yourself and so the Thenar steps in as an affordable, portable braille ebook reader. It leverages a single braille cell on the edge of the device, and a tank-track-style scroll wheel for user input. Complete with a docking station to inductively charge the battery, it’s a high-end reader for those who need an alternative to epaper.


CSV Files for Storage? No Thanks. There’s a Better Option

By Dario Radečić, Consultant at NEOS

Photo by David Emrich on Unsplash

Everyone and their grandmother know what a CSV file is. Parquet, not so much. Is it a type of flooring? Well, yes, but no — it’s a highly efficient data storage format, and you’ll learn all about it today.

CSVs are everywhere — from company reports to machine learning datasets. It’s a data format that’s simple and intuitive to work with — just open a file, and you have direct access to the data. It’s not as good as it sounds, for the reasons you’ll read in a bit.

There are many alternatives to CSVs — such as Excel, SQLite databases, and HDFs — but one in particular stands above the competition. That’s Parquet.

Today’s article answers the following questions:

  • What’s wrong with CSVs?

Adyen Releases Score Machine Learning Solution

Dutch payment processing firm Adyen on Tuesday (Aug. 31) announced the release of Score, a machine learning-based solution that picks up on irregular activity by analyzing the merchant’s data and flagging unusual user behavior.

“As Score provides insights via a broad set of risk signals, the feature is of significant support for platform merchants’ compliance procedures,” the company announcement said. “By improving effectiveness and reducing time spent on platform user security reviews, Score increases operational scalability for platforms.”

Global fundraising platform GoFundMe is one of the first merchants to implement Score.

“Score has helped us to provide the best service we can to help as many people as possible, while also ensuring our customers trust that GoFundMe is keeping them safe and protected,” Matthew Murray, director of risk and compliance at GoFundMe, said in the announcement.


How Proof of Stake Differs From Proof of Work

Bybit Hacker Noon profile picture


Bybit is one of the fastest growing cryptocurrency derivatives exchanges, with more than a million registered users.

Privacy and security have always been a ground for debates in the crypto industry. Hence, the foundation of a consensus mechanism in the blockchain is important to sustain the network. Ultimately, these consensuses are used to achieve an agreement on a single data value among an array of distributed processes and cryptocurrencies. So, whenever there’s a system failure, a correcting mechanism is thereby correcting the errors. When comparing Proof of Stake vs Proof of Work side-by-side, the difference is pretty obvious.

Today we are all on the verge of seeing the Proof of Stake (PoS) consensus mechanism to revolutionize the existing Proof of Work (PoW).


Seven in 10 Institutional Investors Expect To Buy Cryptos

Cryptocurrencies are now estimated to be worth roughly $2 trillion and — despite pressure from regulators — demand from investors continues:

In July 2021, FTX—the Antigua-based cryptocurrency derivatives exchange which offers futures, leverage tokens and OTC trading—raised $900 million from over 60 investors. This included venture capital firms Paradigm and Sequoia, hedge funds and the private equity group Thoma Bravo. It was the largest private equity deal in the crypto industry’s history, valuing the business at $18 billion—one of the largest rounds of financing for a digital assets startup.

In May 2021, Block.one —the Peter Thiel, Alan Howard and Louis Bacon backed blockchain software firm—pumped $9.7 billion into a new cryptocurrency exchange subsidiary called Bullish Global.