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CARE: Contrastive Alignment for ADL Recognition from Event-Triggered Sensor Streams

arXiv.org Artificial Intelligence

Abstract--The recognition of Activities of Daily Living (ADLs) from event-triggered ambient sensors is an essential task in Ambient Assisted Living, yet existing methods remain constrained by representation-level limitations. Sequence-based approaches preserve temporal order of sensor activations but are sensitive to noise and lack spatial awareness, while image-based approaches capture global patterns and implicit spatial correlations but compress fine-grained temporal dynamics and distort sensor layouts. Na ıve fusion (e.g., feature concatenation) fail to enforce alignment between sequence-and image-based representation views, under-utilizing their complementary strengths. We propose C ontrastive A lignment for ADL R ecognition from E vent-Triggered Sensor Streams (CARE), an end-to-end framework that jointly optimizes representation learning via Sequence-Image Contrastive Alignment (SICA) and classification via cross-entropy, ensuring both cross-representation alignment and task-specific discriminability. CARE integrates (i) time-aware, noise-resilient sequence encoding with (ii) spatially-informed and frequency-sensitive image representations, and employs (iii) a joint contrastive-classification objective for end-to-end learning of aligned and discriminative embeddings. Evaluated on three CASAS datasets, CARE achieves state-of-the-art performance (89.8% on Milan, 88.9% on Cairo, and 73.3% on Kyoto7) and demonstrates robustness to sensor malfunctions and layout variability, highlighting its potential for reliable ADL recognition in smart homes. Global increases in life expectancy are leading to aging societies, with a rising number of older adults who require continuous support from healthcare providers and their family members [30]. However, given the critical shortage of healthcare personnel, it is essential to support older adults in maintaining independence for as long as possible. These functional abilities often decline with aging, and can be further deteriorated by aging-related chronic conditions [32]. Ambient Assisted Living (AAL) technologies have emerged to support ADL performance, encompassing systems for activity recognition, anomaly detection, and personalized prompting.


Will AI mean the end of call centres?

BBC News

Will AI mean the end of call centres? Ask ChatGPT whether AI will replace humans in the customer service industry, and it will offer a diplomatic answer, the summary of which is they will work side by side. Humans though, are not so optimistic. Last year, the chief executive of Indian technology firm Tata Consultancy Services, K Krithivasan, told the Financial Times that AI may soon mean that there is minimal need for call centres in Asia. Meanwhile, AI will autonomously resolve 80% of common customer service issues by 2029, predicts business and technology research firm Gartner.


'He lives for the goals' - robot Haaland returns from malfunction

BBC News

'He lives for the goals' - robot Haaland returns from malfunction Is Erling Haaland a big fan of Peter Crouch - or is he actually programmed like a robot? That may - or not be - a question posed after Manchester City's impressive Premier League victory over in-form Bournemouth on Sunday. The Norway striker malfunctioned for only the second time this season when he failed to score in last weekend's loss at Aston Villa, but he was back to being a goal machine with a ruthlessly efficient first-half double against the Cherries. If he is hiding any nuts and bolts under those blonde locks of his, Haaland did prove he was still human by missing a couple of chances to complete his hat-trick. But his scary statistics this season have left many in awe of the 25-year-old's prowess in front of goal, prompting a robot dance to mark his opener in the win that took his side up to second place.


Hamas rejects US accusation it looted aid trucks in Gaza

Al Jazeera

Why did Israel launch air strikes on Gaza? What life is like in Gaza's crowded tents How is Israel using PR firms to frame its war? Will the US plan for Gaza fail? Hamas has denied accusations by the US Central Command (CENTCOM) that the Palestinian group looted aid trucks in the Gaza Strip. CENTCOM had published drone footage that allegedly showed an aid truck being looted in the enclave.


Navy 'wolf pack' drone boats in warship trial success

BBC News

A flotilla of uncrewed wolf pack drone boats has successfully been used to escort warships in a Royal Navy and Army trial. The Navy said it was a milestone demonstration of how it could utilise such technology in a real-life scenario. With camera and sensor data being fed back to Patrick Blackett, five 7.2m autonomous Rattler boats safely escorted the two ships playing the role of foreign warships during the 72-hour milestone training exercise, it said. The demonstration was a culmination of months of trials by the Navy's Disruptive Capabilities and Technology Office (DCTO) and the Fleet Experimentation Squadron (FXS). Each of the Rattler boats were operated by a two-person team, with one responsible for piloting the drone and the other monitoring and operating onboard systems, as well as helping to manage live data streams.


What will really happen when the world ends: Terrifying simulation reveals how the apocalypse will encourage people to go on KILLING sprees

Daily Mail - Science & tech

Terror cops probe knife attack on train as nine fight for their lives and armed police arrest two amid'horrifying' scenes Furious leaders question why they weren't warned over dangerous levels of radiation detected at former San Francisco naval shipyard I descended to Hell for 8 hours after a suicide attempt. It's nothing like the movies... my mother prayed to every God - but only one came to save me Andrew Mountbatten Windsor'refused to sign off royal tributes to Jeffrey Epstein victims' I can't disclose my medical history to my partner. If I do... he'll find me so unsexy that he'll leave: DEAR JANE How Andrew's'rude' comment about Kate sparked bitter feud between ex-prince and William - who'couldn't wait for the day' when Charles finally threw him out Inside humiliated Andrew's new life in exile: From butlers and Downton-style splendour to a pokey cottage with a latch key, friends tell RICHARD KAY how disgraced royal will now live... and reveal who is'propping him up' For six years, I woke at 7.30am, had a shot of vodka, a line of cocaine... and Viagra before sex with the receptionist at work. Bill Maher, 69, and Al Pacino's baby mama Noor Alfallah, 31, reignite romance rumors at star-studded Halloween bash Anthony Hopkins, 87, 'puts his California estate on the market for £5.1 million' after devastating wildfires destroyed his home Pennsylvania diocese apologizes after Catholic school's Halloween float features replica of Auschwitz gate Nicki Minaj draws liberal fury by praising Donald Trump's latest move in emotional post SNL pokes fun at Trump's White House renovation with HGTV-style makeover as Miles Teller portrays Property Brothers in chaotic comedy skit Trump labels Seth Meyers a'deranged lunatic' and blasts his late-night rhetoric as'illegal' A terrifying simulation has revealed how people might really behave as the end of the world approaches. And it suggests that humanity's darkest instincts might reign supreme at the very end.


Daylight Saving Time warning as clock change could make you sick for months, scientists say

Daily Mail - Science & tech

'If he has nothing to hide, why is he hiding?': LIZ JONES: I admit it, I drink a bottle of wine a night. You'll never guess what I'm doing to try and cut down... How Andrew's'rude' comment about Kate sparked bitter feud between ex-prince and William - who'couldn't wait for the day' when Charles finally threw him out I descended to Hell for 8 hours after a suicide attempt. It's nothing like the movies... my mother prayed to every God - but only one came to save me Inside Andrew and Fergie's humiliation: The secret'explosive' dossier that spelled their end, a new tranche of devastating emails, the Royals' 'insurance policy' and how'fuming' William wielded the knife: BARBARA DAVIES The hidden housing danger brewing on America's main streets: 'Your home's value will fall' Truth about Lily Allen, David Harbour and the P**** Palace: As music industry insiders blast'vindictive' Lily, KATIE HIND'S meticulous investigation reveals'grotesque' truth about apartment - and devastating fallout See the best celebrity costumes from Heidi Klum's iconic 2025 Halloween party... and the scariest Gavin Newsom's'disturbing' hand gestures during ABC interview have everyone talking I thought my daughter was obese because she wouldn't stop eating... Furious residents wage war against massive new billionaires' utopia built right next door'destroying' their life in paradise Outrage over America's worst school where students fight, smoke weed and have sex in full view of horrified neighbors Maine mom wins $25 million after doctors misdiagnosed her teen daughter's leukemia as a disease affecting steroid-using men Once a typical Californian'blue' enclave, a beachside paradise is now burning red... and it's coming for Gavin Newsom Changing your clock this weekend as Daylight Saving Time ends could unleash a wave of dangerous health problems which linger for weeks or even months. A growing number of studies in recent years have found a direct link between both mental and physical issues starting right after Americans move their clocks back one hour in the fall and ahead one hour in the spring .


Are YOU addicted to ChatGPT? Scientists warn something strange is happening to people who use AI too often

Daily Mail - Science & tech

How Andrew's'rude' comment about Kate sparked bitter feud between ex-prince and William - who'couldn't wait for the day' when Charles finally threw him out Once a typical Californian'blue' enclave, a beachside paradise is now burning red... and it's coming for Gavin Newsom All the winning cards are now in her hands. I know her next move - it's devastating'I saw Aileen Wournos 12 hours before she was executed and she finally admitted she was a serial killer': How the 46-year-old executed for murdering seven men in just one year confessed her sins to her best friend in their final meeting Nancy Mace accused of throwing explosive airport tantrum at cops after curb pickup mix-up... as she fires back See the best celebrity costumes from Heidi Klum's iconic 2025 Halloween party... and the scariest Watch'naked nanny' accused of murdering hero grandpa with screwdriver as she frolics with 2-year-old in new videos... and her dark spiral is revealed Outrage over America's worst school where students fight, smoke weed and have sex in full view of horrified neighbors The whispers about Oprah's best girl Gayle King are reaching fever pitch among all my media friends. ISIS-inspired terror plot hatched by'homegrown radicals' thwarted by FBI as agents raid suburban home and arrest child New York City Marathon legend Dave Obelkevich, 82, reveals what's kept him pounding NYC streets for five decades We lost 100 lbs without taking'easy way out' Ozempic by using these'traditional' methods: They're simple daily habits... that ended our 1,000-calorie donuts binges for good Are YOU addicted to ChatGPT? People who use AI too often are experiencing a strange and concerning new psychological condition, experts have warned. Psychologists say that fans of popular chatbots like ChatGPT, Claude, and Replika are at risk of becoming addicted to AI.


Climate Change Made Hurricane Melissa 4 Times More Likely, Study Suggests

WIRED

Unusually warm ocean temperatures fueled one of the worst hurricanes on record. New research finds climate change increased the storm's likelihood. Fueled by unusually warm waters, Hurricane Melissa this week turned into one of the strongest Atlantic storms ever recorded. Now a new rapid attribution study suggests human-induced climate change made the deadly tropical cyclone four times more likely. The storm, which reached Category 5, reserved for the hurricanes with the most powerful winds, has killed at least 40 people across the Caribbean so far.


Grotesque model reveals what the average sedentary person could look like by 2050 - with sunken eyes, bald spots, and 'tech neck'

Daily Mail - Science & tech

Distraught illegal migrant shrieks'Help me, I have my papers' as she is arrested by ICE at Salt Lake City airport Hotly-anticipated JonBenet Ramsey drama starring Melissa McCarthy and Clive Owen'will NEVER see the light of day' US plans to BOMB Venezuela as Trump's war hawks brand Maduro'al-Qaeda of the West' Royal insiders tell me Andrew is just the start... and reveal the'bigger unravelling coming next': MAUREEN CALLAHAN Do you have a limited group of close friends, enjoy time alone and find parties draining? You may have a newly discovered rare personality type... take our test to find out We lost 100 lbs without taking'easy way out' Ozempic by using these'traditional' methods: They're simple daily habits... that ended our 1,000-calorie donuts binges for good'I don't think it's all over for Andrew': Mr Mountbatten Windsor's humiliation opens the door for full POLICE probe, royal biographer says - ex-Prince starts first day as a commoner by preparing for eviction from Royal Lodge NORMAN BAKER: Andrew's banishment is a desperate attempt to insulate the monarchy from the far BIGGER scandal everyone's missed. Charles knows the genie's out of the bottle - but it's too late What will happen next for Princesses Beatrice and Eugenie and their royal titles revealed - as both flee the country amid Andrew's final humiliation Airport towers fall eerily silent amid controller crisis as government shutdown drives $4.2B tourism loss for US economy: Live updates FDA warns dentists and parents not to give fluoride to children... as substance is linked to'broad health implications' Devastating new poll shows NYC's socialist mayoral hopeful Zohran Mamdani has opened 25 point lead over centrist Democrat rival Pearl-wearing son of top lawyer'rammed cops in Mercedes G-Wagon'... read the full shocking allegations now set to sully his family's name Total meltdown at CBS as anti-woke new boss Bari Weiss deploys shock and awe tactics: Staff are'running scared'... as insiders reveal what they fear most Actor with towering 7ft stature who starred in iconic Halloween films is seen in LA... can you guess who? It's Meghan's festive fare - with sprinkles of Highgrove! Duchess reveals first Christmas range with startling similarities to the King's Fired CBS News producer claims only'people of color' were booted - and that white co-workers were allowed to transfer elsewhere Grotesque model reveals what the average sedentary person could look like by 2050 - with sunken eyes, bald spots, and'tech neck' Today's culture of convenience means it's easy to order food, take work meetings and connect with friends while sitting on the sofa.