Fast, stealthy, and cheap--autonomous, semisubmersible drone boats carrying tons of cocaine could be international law enforcement's nightmare scenario. A big one just came ashore. Colombian military officials intercepted this 40-foot-long uncrewed fiberglass "narco sub" in the ocean just off Tayrona National Park. On a bright morning last April, a surveillance plane operated by the Colombian military spotted a 40-foot-long shark-like silhouette idling in the ocean just off Tayrona National Park. It was, unmistakably, a "narco sub," a stealthy fiberglass vessel that sails with its hull almost entirely underwater, used by drug cartels to move cocaine north. The plane's crew radioed it in, and eventually nearby coast guard boats got the order, routine but urgent: Intercept. In Cartagena, about 150 miles from the action, Captain Jaime González Zamudio, commander of the regional coast guard group, sat down at his desk to watch what happened next.

Cause of death revealed for chess grandmaster who died'unexpectedly' at age 29 Savannah Guthrie in total'PANIC': Today co-workers' brutal true thoughts about her revealed while she's on sick leave... leaving her asking the same humiliating question'The woman is your average mother after too many vinos': Hilarious'drunk' Victoria Beckham dancing videos go viral as fans point out how'happy' Nicola Peltz looks to be with her Palm Beach's old money elite expose the outrageously dirty secret of newbie Netflix reality stars... and name'tackiest' most hated influencer, as turf war explodes America accuses Britain of'letting us down' by giving away Chagos islands as Reeves takes a jab at Trump in Davos America's spirits industry hit again as two iconic brands shut down . Kate and William's second honeymoon era! Subtle gestures on latest engagement that show couple are more in love than ever Inside dramatic FBI raid on Jake Paul's $8million Calabasas mansion: His own mom reveals explosive never-before-told full story Trump warns Iran the whole country will be'blown up' if he is assassinated David and Victoria Beckham'will only speak to son Brooklyn again if he SPLITS from wife Nicola Peltz' Tommy Lee Jones's daughter was pregnant three months before her shock death, court documents reveal Blake Lively's'greatest friend ever' Taylor Swift calls Justin Baldoni a'b****' in juicy texts, explosive court papers claim I suffered EIGHT miscarriages... then I made a simple diet swap and got pregnant with twins at 43 AI'reveals' what it thinks about people in towns across the UK - and claims residents in Middlesbrough are the most stupid while those in Grimsby are the least sexy READ MORE: Is AI making us STUPID? Daily Mail's Wellness Explained examines A damning study asked ChatGPT its opinions on towns and cities across the UK - revealing the bias built in to the popular AI model. Researchers from the University of Oxford questioned ChatGPT on a range of attributes across the UK - including intelligence, racism, sexiness, and style. When asked which UK towns and cities are the most intelligent, ChatGPT claims that Cambridge tops the list.

Woke wannabe LA mayor melts down during radio interview, says she deserves job because she's a MOTHER - then gets her own age wrong I got the'taboo' cancer soaring among women. Treatment saved my life... but I can NEVER have sex again. It didn't have to be like this AMANDA PLATELL: This single line in Brooklyn Beckham's nuclear outburst is brutal... but it's made me rethink EVERYTHING about Victoria and David The bitter trademark row at the heart of the Beckham feud: Why'devastated' Victoria bore the brunt of Brooklyn's eviscerating statement that has left her'on the floor in pieces' Cut BACK on breakfast cereal. Nick Reiner is'childlike' in jail and so out of it he cannot process the murders of his parents, insider claims The Osteopenia Plague: Almost HALF of over-50s now have the dreaded bone disease. Dark side of America's favorite vacation hotspot... where women are subjected to the most horrific sex attacks imaginable Disturbing video appears to show former Disney star shoving his ex-fiancée after'hammer threat'... as Matt Prokop is arrested for child pornography Joseph Gordon-Levitt was the hottest actor in Hollywood... then vanished: Unearthing family tragedy that sparked disappearance and has left'lasting' scars Shades-wearing Macron hits back at'bully' Trump and warns'we're shifting to a world without rules' where'international law is trampled underfoot and the only law that matters is that of the strongest' Trump reveals why he leaked world leaders' messages and his secret role in foiling a prison break in Syria: Live updates Brooklyn Beckham and Nicola Peltz's wedding guest speaks out and claims Victoria DID dance inappropriately with her son A person's facial reactions may reveal if they have autism, as scientists have found that those with the condition'speak a different language' with their expressions.

Brooklyn Beckham and Nicola Peltz's wedding guest speaks out and claims Victoria DID dance inappropriately with her son Stocks set to plunge and Wall Street fear gauge surges over Trump's Greenland tariff threats AMANDA PLATELL: This single line in Brooklyn Beckham's nuclear outburst is brutal... but it's made me rethink EVERYTHING about Victoria and David Cut BACK on breakfast cereal. Knott's Berry Farm thrill seeker taught painful lesson after trying to cut line at crowded theme park Denver man is arrested for first degree murder of two-year-old... as his sordid child abuse history comes to light I got the'taboo' cancer soaring among women. Treatment saved my life... but I can NEVER have sex again. It didn't have to be like this The six WORST foods for your gut health, revealed by experts.. and it's bad news if you're a fan of sliced bread, fizzy drinks and oysters The Alexander brothers' glittering real estate empire and untouchable playboy status hangs in the balance as sex trafficking trial begins The children of the Iranian regime elite flaunting their wealth and luxury lifestyles... as thousands are slaughtered for daring to stand up to their families Indiana coach Curt Cignetti's obsession with Chipotle goes viral during college playoff final Dark side of America's favorite vacation hotspot... where women are subjected to the most horrific sex attacks imaginable Joseph Gordon-Levitt was the hottest actor in Hollywood... then vanished: Unearthing family tragedy that sparked disappearance and has left'lasting' scars Tragic details emerge about Canadian woman, 19, found dead and surrounded by dingoes on K'gari We were $460,000 in debt. We weren't high earners and paid it off using simple but life-changing tricks... anyone can do it Meghan Markle's series With Love, Meghan'won't be returning to Netflix for another season' China's real-life'robocops': City deploys AI-powered humanoid police officer that barks orders at civilians and works'around the clock' NASA has revealed the sharpest ever look at the edge of a black hole, and it could solve a decades-old galactic mystery.

Idyllic city was hit by a surge in cancers and miscarriages when Trump's'beautiful baby' arrived. Dark side of America's favorite vacation hotspot... where women are subjected to the most horrific sex attacks imaginable White House renovation to include'secure underground facility' underneath Trump's new East Wing Notorious clip of stony-faced Nicola Peltz being pulled into a Beckham family picture goes viral after her husband Brooklyn's explosive online statement Disturbing video appears to show former Disney star shoving his ex-fiancée after'hammer threat'... as Matt Prokop is arrested for child pornography Stephen Miller orders local law enforcement in Minnesota to'stand down and surrender' amid ICE protests Moment Sydney Sweeney's brother is caught remonstrating with anti-Trump demonstrators as rumours swirl about the family's MAGA leanings - and now the actress Hollywood loves to hate may have even more flak coming her way Joseph Gordon-Levitt was the hottest actor in Hollywood... then vanished: Unearthing family tragedy that sparked disappearance and has left'lasting' scars Denmark sends'substantial contribution' of troops to Greenland amid growing tension with US as Trump refuses to rule out invasion I thought I'd seen it all, but this took my breath away: JANA HOCKING reveals the'miraculous' move that will whip you and your sex life into shape I interviewed Joe Rogan's'worst guest ever'... then a controversial question stopped everything Knott's Berry Farm thrill seeker taught painful lesson after trying to cut line at crowded theme park'Mickey' hitmaker Toni Basil looks incredible at 82 - see her now A new biggest-ever Buc-ee's is opening soon and it's not in its home state of Texas Clearest signal yet Democrat is set to run in 2028 as Trump's private flattery is revealed AI'reveals' the most racist towns in the UK - and claims Burnley, Bradford and Belfast are at the top of the list READ MORE: Is AI making us STUPID? Daily Mail's Wellness Explained examines AI has'revealed' the most racist towns and cities in the UK. Researchers from the University of Oxford asked ChatGPT a whopping 20.3 million questions to understand biases in the AI's representation of countries, states, cities, and neighbourhoods around the world. When asked which UK towns and cities are the most racist, ChatGPT claims that Burnley tops the list.

Revealed: The message Norwegian PM sent Trump that sparked president's outburst saying Nobel Peace Prize snub justified Greenland land-grab The Kristi Noem photo that reveals why anti-ICE mob stormed Minnesota church as terrified child worshipper sobbed in father's arms We were $460,000 in debt. We weren't high earners and paid it off using simple but life-changing tricks... anyone can do it Idyllic city was hit by a surge in cancers and miscarriages when Trump's'beautiful baby' arrived. Joseph Gordon-Levitt was the hottest actor in Hollywood... then vanished: Unearthing family tragedy that sparked disappearance and has left'lasting' scars Mayor of gorgeous Oregon city that's home to Nike HQ explains simple reasons why it is thriving while neighboring Portland circles the drain Spanish train disaster victims flew through windows and were found hundreds of yards away, with more than 39 feared dead - as mystery over what caused'truly strange' crash grows Dark side of America's favorite vacation hotspot... where women are subjected to the most horrific sex attacks imaginable Dietitian reveals the game-changing supplements that work like Ozempic... and will super-charge your weight loss without side-effects Pierce Brosnan fans defend star's wife Keely Shaye Smith, 62, after cruel troll posts a photo of her when she met the 72-year-old Bond star alongside a recent snap as a'reminder to avoid marriage' My husband was acting odd for months. But nothing prepared me for what was hidden under the couch... undeniable proof of my worst fear John Barrowman breaks down in tears while cradling his dog's body after the beloved pet'waited until I got home' before dying peacefully in his arms Country singer Karley Scott Collins responds to rumors she's living with Keith Urban after Nicole Kidman split Scientists discover Greenland's'Achilles heel' that could force Trump to rethink his Arctic playbook MORE: I'm a Risk board game champion... Here's how Trump's tactics are a winning strategy for global domination Scientists have identified a hidden geological weakness beneath Greenland's ice sheet that could accelerate its collapse, and complicate US ambitions in the Arctic. A new study discovered a hidden layer of sediment, composed of soft dirt and sand, which has driven more of the Danish territory's glaciers to melt, break apart, and fall into the ocean.

Revealed: The message Norwegian PM sent Trump that sparked president's outburst saying Nobel Peace Prize snub justified Greenland land-grab The Kristi Noem photo that reveals why anti-ICE mob stormed Minnesota church as terrified child worshipper sobbed in father's arms We were $460,000 in debt. We weren't high earners and paid it off using simple but life-changing tricks... anyone can do it Idyllic city was hit by a surge in cancers and miscarriages when Trump's'beautiful baby' arrived. Joseph Gordon-Levitt was the hottest actor in Hollywood... then vanished: Unearthing family tragedy that sparked disappearance and has left'lasting' scars Mayor of gorgeous Oregon city that's home to Nike HQ explains simple reasons why it is thriving while neighboring Portland circles the drain Spanish train disaster victims flew through windows and were found hundreds of yards away, with more than 39 feared dead - as mystery over what caused'truly strange' crash grows Dark side of America's favorite vacation hotspot... where women are subjected to the most horrific sex attacks imaginable Dietitian reveals the game-changing supplements that work like Ozempic... and will super-charge your weight loss without side-effects Pierce Brosnan fans defend star's wife Keely Shaye Smith, 62, after cruel troll posts a photo of her when she met the 72-year-old Bond star alongside a recent snap as a'reminder to avoid marriage' My husband was acting odd for months. But nothing prepared me for what was hidden under the couch... undeniable proof of my worst fear John Barrowman breaks down in tears while cradling his dog's body after the beloved pet'waited until I got home' before dying peacefully in his arms Country singer Karley Scott Collins responds to rumors she's living with Keith Urban after Nicole Kidman split Is AI making us STUPID? Latest episode of Daily Mail's Wellness Explained examines what our increasing reliance on ChatGPT is doing to our brains Artificial Intelligence ( AI) chatbots like ChatGPT are now a daily part of life for millions of people - but what is that really doing to our brains?

Large Language Models (LLMs) often produce factoid hallucinations - plausible yet incorrect answers. A common mitigation strategy is model alignment, which improves factual accuracy by training on curated (factual, non-factual) pairs. However, this approach often relies on a stronger model (e.g., GPT-4) or an external knowledge base to assess factual correctness that may not always be accessible. Addressing this, we propose Atomic Consistency Preference Optimization (ACPO), a self-supervised preference-tuning method that enhances factual accuracy without external supervision. ACPO leverages atomic consistency signals (i.e., the agreement of individual facts across multiple stochastic responses) to identify high- and low-quality data pairs for model alignment. Despite being fully self-supervised, ACPO outperforms the strong supervised alignment baseline by 1.95 points averaged across Phi-3 and Llama3 on the LongFact and BioGen datasets, demonstrating its effectiveness in improving factual reliability without relying on external models or knowledge bases.

There are two big reasons why I don't believe the official 9/11 story, Charlie Sheen tells Tucker Carlson Today is Selena Gomez's wedding. But a bridezilla decision and weeks of family feuding have left her mother utterly'shattered'... and now insiders are spilling everything Disturbing twist in case of cheerleader whose dead baby was found in closet: 'There were whimpers' How Prince Harry collapses'like a souffle' as Meghan Markle interrupts him multiple times during an interview, body language expert reveals LIZ JONES: I have history with Colin Firth's ex-wife Livia. Now, her petulant protest over Trump's UK state visit proves something humiliating about her Ryder Cup fans left appalled by'criminal' Uber prices to get home from Bethpage Black: 'Just gonna walk' How people are being hanged from cranes and strangled to death over 45 minutes while crowds of excited families watch as part of Iran's mass execution campaign that's killed more than 1,000. And the death penalty for girls starts at just 9... Midwestern airport with'outstanding food' is'best' for traveler satisfaction Teacher dies from overdose before he's due to be sentenced for murdering his wife I'm the witch who cursed Charlie Kirk. 'Hamptons of the North' loved by celebs in battle over Russian developer's Maldives-style resort plan NFL fan labeled the new'Phillies Karen' after being caught on camera stealing young boy's gift from Patrick Mahomes Princess Eugenie puts on a brave face as she releases her first statement since Sarah Ferguson's leaked email to Jeffrey Epstein Prince Harry'taken by surprise' by how'formal' his 53-minute meeting with King Charles proved - amid claims he will be blocked from'half-in, half-out' return to Royal Family fold despite handing over Meghan and children photo Is YOUR dog a genius?

This study presents a machine learning approach to predict the number of barges transported by vessels on inland waterways using tracking data from the Automatic Identification System (AIS). While AIS tracks the location of tug and tow vessels, it does not monitor the presence or number of barges transported by those vessels. Understanding the number and types of barges conveyed along river segments, between ports, and at ports is crucial for estimating the quantities of freight transported on the nation's waterways. This insight is also valuable for waterway management and infrastructure operations impacting areas such as targeted dredging operations, and data-driven resource allocation. Labeled sample data was generated using observations from traffic cameras located along key river segments and matched to AIS data records. A sample of 164 vessels representing up to 42 barge convoys per vessel was used for model development. The methodology involved first predicting barge presence and then predicting barge quantity. Features derived from the AIS data included speed measures, vessel characteristics, turning measures, and interaction terms. For predicting barge presence, the AdaBoost model achieved an F1 score of 0.932. For predicting barge quantity, the Random Forest combined with an AdaBoost ensemble model achieved an F1 score of 0.886. Bayesian optimization was used for hyperparameter tuning. By advancing predictive modeling for inland waterways, this study offers valuable insights for transportation planners and organizations, which require detailed knowledge of traffic volumes, including the flow of commodities, their destinations, and the tonnage moving in and out of ports.