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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

U.S. Stocks Hold Steady After Christmas as Trading Volumes Stay Light

U.S. stocks were mostly unchanged following the Christmas holiday, as subdued trading activity and thin volumes defined the session ahead of a shortened New Years trading week. With many global markets still observing...

Oil Prices Hold Steady in Asia as Geopolitical Tensions Support Market

Oil prices were mostly unchanged during Asian trading on Friday, holding on to gains from earlier in the week as geopolitical tensions continued to underpin the market. However, thin holiday liquidity and limited...

Lebanon Cabinet Approves Financial Gap Law to Tackle Ongoing Economic Crisis

Lebanons cabinet has approved a controversial draft law aimed at addressing the countrys prolonged financial crisis, a move seen as a critical step toward unlocking long-awaited international financial support. The...

China to Tighten Crude Steel Output Controls and Export Regulation Through 2030

China has announced it will continue strict regulation of crude steel output and prohibit the addition of illegal new capacity from 2026 to 2030, reinforcing its long-term strategy to curb overcapacity and reduce carbon...

Asian Stocks and Gold Rally as Investors Chase Year-End Gains Amid Dollar Weakness

Asian stock markets climbed to their highest levels in six weeks on Friday, extending a strong year-end rally as investors looked to finish the year on a positive note. Despite thin trading volumes due to market holidays...

Politics

Zelenskiy to Meet Trump to Advance Ukraine Peace Talks and Security Guarantees

Ukrainian President Volodymyr Zelenskiy announced on Friday that he plans to meet with U.S. President Donald Trump on Sunday as part of ongoing efforts to bring an end to Russias war in Ukraine. The high-level meeting is...

Najib Razak Jailed 15 More Years in Landmark 1MDB Verdict With Major Political Impact

Malaysias former prime minister Najib Razak has been sentenced to an additional 15 years in prison and fined 11.39 billion ringgit (about $2.8 billion) after being found guilty of abuse of power and money laundering in one...

Japan Approves Record ¥122.3 Trillion Budget as Takaichi Seeks Fiscal Balance

Japans government, led by Prime Minister Sanae Takaichi, has approved a record-breaking budget worth 122.3 trillion yen ($785 billion) for the next fiscal year starting in April, underscoring its attempt to balance...

White House East Wing Ballroom Plans Face Scrutiny Ahead of January Hearing

The White House is set to reveal new details about President Donald Trumps proposed East Wing ballroom during a federal commission hearing scheduled for early next month, according to official notices. The project, which...

Zelenskiy Discusses Ukraine Peace Efforts With Trump Envoys

Ukrainian President Volodymyr Zelenskiy said on Thursday that he held an extensive discussion with U.S. President Donald Trumps special envoy Steve Witkoff and Trumps son-in-law Jared Kushner, focusing on possible ways to...

Science

Jared Isaacman Confirmed as NASA Administrator, Becomes 15th Leader of U.S. Space Agency

The U.S. Senate has officially confirmed billionaire private astronaut Jared Isaacman as the new NASA administrator, making him the 15th leader in the agencys history. The confirmation, which took place on Wednesday, marks...

Senate Sets December 8 Vote on Trump’s NASA Nominee Jared Isaacman

The U.S. Senate Commerce Committee announced it will vote on December 8 on President Donald Trumps renewed nomination of private astronaut and tech entrepreneur Jared Isaacman to lead NASA. Isaacman, known for his...

NASA Cuts Boeing Starliner Missions as SpaceX Pulls Ahead

NASA has significantly scaled back Boeings Starliner program after years of technical issues and delays, announcing that the next Starliner mission to the International Space Station (ISS) will fly without astronauts. The...

Blue Origin’s New Glenn Achieves Breakthrough Success With First NASA Mission

Blue Origins massive New Glenn rocket marked a major milestone as it completed its first mission for paying customers, sending two NASA satellites toward Mars and successfully landing its reusable booster at sea. The...

Cogent Biosciences Soars 120% on Breakthrough Phase 3 Results for Bezuclastinib in GIST Treatment

Cogent Biosciences (NASDAQ: COGT) shares skyrocketed over 120% after the biotech company announced groundbreaking results from its Phase 3 PEAK trial evaluating bezuclastinib in combination with sunitinib for patients with...

Technology

Nvidia and Groq Strike Strategic AI Inference Licensing Deal

Reports earlier this week suggested that Nvidia (NASDAQ: NVDA) had agreed to acquire AI chip startup Groq in a $20 billion all-cash transaction. However, updated details clarify that the arrangement is not a traditional...

TSMC Honors Japanese Chip Equipment Makers With 2025 Supplier Awards

Several leading Japanese semiconductor equipment manufacturers have been recognized with 2025 Supplier Awards from Taiwan Semiconductor Manufacturing Company (TSMC), highlighting their growing importance in the global chip...

Nvidia to Acquire Groq in $20 Billion Deal to Boost AI Chip Dominance

NVIDIA (NASDAQ: NVDA) has reportedly agreed to acquire Groq, a fast-growing designer of high-performance artificial intelligence accelerator chips, in a $20 billion all-cash transaction, according to a CNBC report. The...

Texas App Store Age Verification Law Blocked by Federal Judge in First Amendment Ruling

A federal judge in Texas has blocked the enforcement of a new state law that would have required app stores and developers to verify users ages, marking a significant legal win for major technology companies and digital...

FTC Praises Instacart for Ending AI Pricing Tests After $60M Settlement

The U.S. Federal Trade Commission has welcomed Instacarts decision to end its artificial intelligence-based price testing, a move that follows weeks of consumer backlash and regulatory scrutiny. FTC Chair Andrew Ferguson...