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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

Meta-backed research finds exposure to ‘untrustworthy’ social media is rare. The fine print is less reassuring

Jul 30, 2026 07:43 am UTC| Insights & Views Business

How much of what you see on social media comes from sources that repeatedly post falsehoods? And if that content quietly vanished from your feed, would you believe anything different months later? A new study published...

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

Hungary Industrial Output Beats Forecasts With 4.7% July Growth

Hungarys industrial output increased 4.7% year-on-year in July, beating market expectations and signaling continued growth in the countrys manufacturing sector, preliminary data showed on Monday. According to Hungarys...

Iran Plans New Gulf Restricted Zone as Hormuz Tensions Push Oil Higher

Iran plans to establish a new restricted zone in the Gulf and introduce shipping routes through the Strait of Hormuz, escalating tensions after renewed U.S.-Iran strikes disrupted maritime traffic and pushed oil prices...

UK House Prices Fall for First Time Since 2023

UK house prices recorded their first annual decline in nearly three years in August as higher borrowing costs and economic uncertainty weighed on buyer demand, according to new data from Lloyds. House prices fell 0.4%...

Asian Currencies Mixed as Yen Rallies on BOJ Bets

Asian currencies traded mixed on Monday as the U.S. dollar hovered near recent lows, while the Japanese yen strengthened further on expectations of a Bank of Japan rate hike and potential currency intervention. The U.S....

US Stock Futures Mixed as Strong Jobs Data Boosts Fed Rate Hike Bets

U.S. stock futures traded mixed Sunday evening as investors digested a stronger-than-expected August jobs report that increased expectations for a Federal Reserve interest rate hike in September. Trading activity was...

Politics

Kyiv Mothers Give Birth Amid Russian Drone Attacks

Women in Kyiv are giving birth under the constant threat of Russian drone attacks, highlighting how Ukraines escalating air war is reshaping everyday life and deepening the countrys demographic crisis. Alyona Bohatyrenko,...

Iran Vows Tougher Response as U.S. Sanctions Squeeze Economy

Iran pledged to intensify efforts to counter mounting U.S. sanctions and economic pressure, while a senior official warned Washington that any further attacks would trigger a faster and more severe Iranian response. Six...

EU to Boost Greenland Investment Amid Trump Pressure

European Commission President Ursula von der Leyen is expected to announce a major increase in EU investment in Greenland on Monday, strengthening economic and political ties as U.S. President Donald Trump continues to...

Netanyahu Orders West Bank Settler Outposts Dismantled

Israeli Prime Minister Benjamin Netanyahu has ordered unauthorized settler outposts in the West Bank to be dismantled amid growing U.S. pressure on Israel to curb violence against Palestinians, according to two people...

Putin Meets US Envoys in Moscow as Ukraine Peace Push Intensifies

Russian President Vladimir Putin held more than three hours of talks with U.S. envoys Steve Witkoff and Jared Kushner on Saturday as Washington stepped up efforts to negotiate an end to the Ukraine war. Kremlin aide Yuri...

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

Huawei Launches Mate XT2 Foldable Phone in China

Huawei unveiled its latest flagship foldable smartphone, the Mate XT2, on Monday as the Chinese technology giant looks to maintain its dominance in the countrys premium smartphone market amid growing competition from Apple...

Nvidia CEO Says AGI Has Arrived With OpenAI GPT-6 Astra

Nvidia (NASDAQ: NVDA) CEO Jensen Huang has declared that artificial general intelligence, or AGI, has arrived, pointing to OpenAIs newly launched GPT-6 Astra as a major milestone in the accelerating development of...

SpaceX Turbine Push Unlikely to Threaten Howmet, Bernstein Says

SpaceXs plan to manufacture industrial gas turbine blades and vanes is unlikely to significantly threaten Howmet Aerospace, according to Bernstein analysts, who see recent weakness in Howmet shares as a potential buying...

Anthropic IPO Marketing Expected to Start in Mid-October

Anthropic is expected to begin marketing its initial public offering in mid-October at the earliest, as the artificial intelligence company adjusts the timeline for what could become one of the largest IPOs in history. The...

Japan, US Target AI and Chips in $550 Billion Investment Push

Japan and the United States are advancing a $550 billion investment initiative, with artificial intelligence and semiconductor projects expected to become major priorities in the next phase of the economic partnership,...