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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

ECB's Kocher Says No Inflation Spillover Yet From Iran Conflict, Warns Risks Remain

The European Central Bank (ECB) does not currently see evidence that the U.S.-Israeli conflict with Iran is triggering broader inflationary pressures across the euro area, although policymakers remain alert to potential...

Asian Stocks Rise as Softer U.S. Inflation Boosts Sentiment Despite Middle East Tensions

Asian stock markets traded mostly higher on Wednesday after weaker-than-expected U.S. inflation data eased expectations of a near-term Federal Reserve interest rate hike, although escalating tensions in the Middle East...

Asian Currencies Stay Rangebound as Middle East Tensions, Weak China GDP Weigh on Sentiment

Most Asian currencies traded in narrow ranges on Wednesday as investors remained cautious over escalating tensions in the Middle East and weaker-than-expected Chinese economic growth, despite a softer U.S. dollar following...

China Home Prices Fall Again in June Despite Slower Pace of Decline

Chinas new home prices continued to decline in June, highlighting the ongoing challenges facing the countrys property market despite signs that the pace of deterioration is easing. Official data released by the National...

US Inflation Expected to Ease in June, but Fed Rate Hike Risks Persist Amid Middle East Tensions

U.S. consumer inflation likely eased in June, but economists say the slowdown may provide little relief for households or significantly reduce the likelihood of another Federal Reserve interest rate hike later this year,...

Politics

Trump Administration Launches AI Cybersecurity Partnership to Protect Critical Infrastructure

The Trump administration is launching a new initiative to strengthen U.S. cybersecurity by bringing together leading artificial intelligence developers and operators of critical infrastructure to identify and address...

Trump Administration Bars U.S. Travelers From Congo Flights Amid Ebola Outbreak

The Trump administration has imposed new travel restrictions on American citizens who have recently been in the Democratic Republic of Congo (DRC), preventing them from boarding commercial flights to the United States as...

Trump to Deliver National Address on 2020 Election Intelligence, Voting Machine Security

President Donald Trump is set to deliver a national address on Thursday night, outlining newly declassified intelligence related to the 2020 U.S. presidential election and discussing what the White House describes as...

Trump Says U.S. Strikes on Iran Will Continue Until Nuclear Deal Is Reached

U.S. President Donald Trump said Tuesday that the United States remains in direct contact with Iranian officials but warned that military operations against Iran will continue until Tehran agrees to a new deal, signaling...

Trump Administration Bars U.S. Travelers From Congo Flights Amid Ebola Outbreak

The Trump administration has imposed new travel restrictions on American citizens in the Democratic Republic of Congo (DRC) as the country faces a worsening Ebola outbreak, according to a White House official. Under the...

Science

Blue Origin New Glenn Explosion Could Delay Launch Operations Until 2028

Blue Origin is facing a significant setback after a dramatic explosion involving its New Glenn rocket severely damaged a launch pad at Cape Canaveral, Florida. According to NASA Administrator Jared Isaacman, repairs to the...

Blue Origin New Glenn Rocket Explodes During Launch Pad Test, Delaying Space Ambitions

Blue Origin suffered a major setback after its uncrewed New Glenn rocket exploded during a launch pad test in Florida on Thursday, raising new challenges for Jeff Bezos space company as it competes with Elon Musks SpaceX...

SpaceX Delays Starship V3 Launch Ahead of Potential Record IPO

SpaceX on Thursday postponed the highly anticipated launch of its 12th Starship rocket test from Texas after technical issues interrupted the final countdown. The company now plans to attempt the Starship V3 launch again...

Trump Administration Releases New UFO Files and Apollo Mission Records

The U.S. Defense Department has released dozens of previously classified UFO-related files following an order from President Donald Trump, sparking renewed debate over unidentified anomalous phenomena (UAP) and government...

China vs. NASA: The New Moon Race and What's at Stake by 2030

The space race is back and this time, its a direct competition between the United States and China for dominance on the lunar surface. NASAs Artemis II mission recently made history when four astronauts flew farther into...

Technology

ASML Raises 2026 Outlook as AI Chip Demand Lifts Q2 Earnings

ASML Holding (AS: ASML) reported stronger-than-expected second-quarter 2026 earnings on Wednesday, fueled by robust demand for artificial intelligence (AI) chip manufacturing equipment and higher sales from its installed...

Arm Stock Falls After HSBC Downgrade, Citing Limited Near-Term AI Upside

Arm Holdings shares came under pressure after HSBC downgraded the semiconductor designer to hold from buy,arguing that the companys recent rally has already priced in much of its long-term artificial intelligence (AI)...

SK Hynix Stock Soars as AI Memory Demand Outlook Fuels Chip Rally

SK Hynix shares surged nearly 13% in Seoul on Wednesday, leading a broad rally in South Korean semiconductor stocks as easing U.S. inflation and renewed optimism over artificial intelligence (AI) memory demand boosted...

Yaskawa Electric Shares Slide as Weak Profit Overshadows Strong AI Demand

Yaskawa Electric Corp. (TYO:6506) shares extended losses for a second consecutive session on Tuesday after the Japanese robotics and factory automation company reported weaker-than-expected quarterly earnings, with...

Australia Flags Child Safety Gaps at Apple, Meta, Google Over Online Sexual Extortion

Australias online safety regulator has warned that major technology companies, including Apple, Meta, Google, Microsoft and Snap, still have significant shortcomings in tackling child sexual abuse and the rising threat of...