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Marian-Andrei Rizoiu

Lecturer in Computer Science, University of Technology Sydney
Dr. Marian-Andrei Rizoiu is lecturer with the University of Technology Sydney, leading the Behavioral Data Science group, studying the dynamics of human attention in the online environment. His research has made several key contributions, particularly to the areas of online popularity prediction and online privacy. For the past several years, he has been developing theoretical models for online information diffusion, which can account for complex social phenomena, such as the rise and fall of online popularity, the spread of misinformation or the adoption of disruptive technologies. He approached questions such as "Why did X become popular, but not Y?" and "How can items be promoted?" with implications in advertising and marketing.

Marian-Andrei has also worked on detecting the evolution of privacy loss over time. His research has shown that privacy "leaks" over time and it identified the factors causing the loss: the individual's own actions and the environment. The conclusions were staggering: privacy continues to decrease even for users who retired from activity. Marian-Andrei published in the most selective venues of the field (such as WWW, WSDM, ICWSM or CIKM) and his work has received significant media attention, including from the Wikimedia Foundation for the work concerning the privacy of Wikipedia editors (which featured in the March 2016 Wikimedia Research Showcase). See more at http://www.rizoiu.eu

Conspiracy theorist tactics show it’s too easy to get around Facebook’s content policies

Mar 25, 2024 05:11 am UTC| Insights & Views Technology

During the COVID pandemic, social media platforms were swarmed by far-right and anti-vaccination communities that spread dangerous conspiracy theories. These included the false claims that vaccines are a form of...

How AI can help choose your next career and stay ahead of automation

Aug 06, 2021 09:49 am UTC| Technology

The typical Australian will change careers five to seven times during their professional lifetime, by some estimates. And this is likely to increase as new technologies automate labour, production is moved abroad, and...

Coronavirus infecting Australian jobs: vacancy rates down since early February

Mar 23, 2020 12:05 pm UTC| Insights & Views

The economic impacts of the COVID-19 coronavirus will be enormous. Only blind optimism can deny the dark realities of the moment. Policy responses are escalating by the hour. Markets have plummeted to GFC levels. Food...

Can hiding likes make Facebook fairer and rein in fake news? The science says maybe

Oct 09, 2019 11:24 am UTC| Insights & Views Technology

This is the first article in a series looking at the attention economy and how online content gets in front of your eyeballs. You may have read about or already seen, depending on where you are the latest tweak to...

Economy

Nigerians throw naira notes around to show love: but it could land you in jail

The legal implication of physically damaging the naira, Nigerias currency, came into focus recently with the prosecution of at least two celebrities by the countrys Economic and Financial Crimes Commission. Nigeria has a...

The US is one of the least trade-oriented countries in the world – despite laying the groundwork for today’s globalized system

Given the spate of news about international trade lately, Americans might be surprised to learn that the U.S. isnt very dependent on it. Indeed, looking at trade as a percentage of gross domestic product a metric...

Beyond the spin, beyond the handouts, here’s how to get a handle on what’s really happening on budget night

Three weeks from now, some of us will be presented with a mountain of budget papers, and just about all of us will get to hear about them on radio, TV or news websites on budget night. The quickest way to find out what...

Johannesburg in a time of darkness: Ivan Vladislavić’s new memoir reminds us of the city’s fragility

Ivan Vladislavić is Johannesburgs literary linkman. He tells us, in the first pages of his new book, The Near North, that before cities were lit, first by gaslight and later electricity, people of means paid torchbearers...

Economist Chris Richardson on an ‘ugly’ inflation result and the coming budget

With Jim Chalmerss third budget on May 14, Australians will be looking for some more cost-of-living relief beyond the tax cuts although they have been warned extra measures will be modest. As this weeks consumer price...

Politics

Taiwan is experiencing millions of cyberattacks every day

Taiwan stands out as a beacon of democracy, innovation and resilience in an increasingly autocratic region. But this is under growing threat. In recent years, China has used a variety of grey zone tactics to pressure...

Sudan’s civil war is rooted in its historical favouritism of Arab and Islamic identity

The current civil war in Sudan goes beyond a simple power struggle between two generals. It reflects a deep-rooted crisis within the countrys governing structure thats been present since it gained independence from the...

South Africa’s youth are a generation lost under democracy – study

South African president Cyril Ramaphosa recently painted a rosy picture in which the countrys youth democracys children had enormous opportunities for advancement, all thanks to successive post-apartheid governments led...

Sadiq Khan on track for third term as London mayor – but nearly half of Londoners dissatisfied with performance

Polls have consistently shown that the incumbent mayor of London, Sadiq Khan, appears to be on track to win a third term in office at the upcoming mayoral elections on May 2. One poll we commissioned as part of our...

The politics stopping the UK from opening a youth mobility scheme with Europe

Earlier this week, it seemed possible that young people in the UK might soon be able to travel freely to work and live in Europe again. The European Commission laid out proposals to open mobility to millions of 18- to...

Science

IceCube researchers detect a rare type of energetic neutrino sent from powerful astronomical objects

About a trillion tiny particles called neutrinos pass through you every second. Created during the Big Bang, these relic neutrinos exist throughout the entire universe, but they cant harm you. In fact, only one of them is...

The Mars Sample Return mission has a shaky future, and NASA is calling on private companies for backup

A critical NASA mission in the search for life beyond Earth, Mars Sample Return, is in trouble. Its budget has ballooned from US$5 billion to over $11 billion, and the sample return date may slip from the end of this...

Dark matter: our new experiment aims to turn the ghostly substance into actual light

A ghost is haunting our universe. This has been known in astronomy and cosmology for decades. Observations suggest that about 85% of all the matter in the universe is mysterious and invisible. These two qualities are...

A Nasa rover has reached a promising place to search for fossilised life on Mars

While we go about our daily lives on Earth, a nuclear-powered robot the size of a small car is trundling around Mars looking for fossils. Unlike its predecessor Curiosity, Nasas Perseverance rover is explicitly intended to...

The rising flood of space junk is a risk to us on Earth – and governments are on the hook

A piece of space junk recently crashed through the roof and floor of a mans home in Florida. Nasa later confirmed that the object had come from unwanted hardware released from the international space station. The 700g,...

Technology

Shiba Inu Insider Drops Major Shiba Eternity Update; Community Anticipates Enhancements

Shiba Eternity: Lucies Tease Unveils Play-to-Earn Features and Breeding Mechanics The Shiba Inu community is buzzing with excitement following a recent announcement from a critical team member about Shiba Eternity, as...

Crypto Market Selloff: BTC, ETH, SOL, XRP, SHIB Prices Plummet, Crash Fears Grow

The cryptocurrency market shows new symptoms of weakness as bulls and bears battle for supremacy. Investors have recently lost about $150 billion, with the cryptocurrency market valuation falling from $2.42 trillion to...

BYD Shark Debuts in Mexico, Rivals Tesla Cybertruck and Ford F-150 Lightning

This month, the streets of Mexico will showcase the BYD Sharks debut, an advanced hybrid electric pickup set to rival the Tesla Cybertruck and highlight BYDs cutting-edge hybrid technology. BYD Shark: A New Hybrid...

South Korea Secures Competitive Edge With US Tax Credit Extension on EVs

South Korea has positively received the U.S. extension of tax credits for electric vehicles (EVs) incorporating Chinese graphite. This critical decision supports Seouls strategy to dominate the American EV market. This...

SHIB Exec Connects Shiba Inu to Bitcoin; Open Interest Falls 7%

SHIBs marketing officer, Lucie, emphasized similarities between Shiba Inu and Bitcoin, highlighting both projects foundational anonymity and community-driven development. Meanwhile, a 7% drop in open interest raises...