Adaptive Representations for Tracking Breaking News on Twitter

Ashanti Hendricks in court this morning, pleaded not guilty in incident that sparked Children's Hospital lockdown http://t.co/Lf6CW4RXze — 1385394166000

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Multiple news outlets reporting police investigating reports of gunman on the #Yale University campus. Students, staff urged to stay inside — 1385394808000

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@Yale lockdown started at 10:20am this morning; still going on 45 minutes later; heavy police presence, no confirmation. #NHV #Yale — 1385395582000

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Imagine if every time an American were exercising his or her freedom of speech, schools were put into lockdown? — 1385396070000

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BREAKING NEWS: #Yale University confirms armed gunman on campus near Old Campus. Everyone ordered to seek shelter and stay locked down. — 1385396185000

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@Yale lockdown and police activity creating major traffic tie-ups in downtown New Haven as YPD and NHPD respond; businesses evacuated. #NHV — 1385396806000

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RT @JimboShelton: #Yale senior John Maheswaran: "It's kind of insane." #NHV — 1385396938000

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Yale confirms report of person with gun on campus - @NBCNews; alert "Yale University lockdown, Nov. 25, 2013" for our verified updates — 1385397022000

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NOW: Elm Street and Chapel both closed in downtown New Haven on the #Yale camps; pedestrians/vehicles turned around. http://t.co/9oTgdcn2F1 — 1385397067000

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#Yale tip of person with gun came from anonymous caller at phone booth; no sign of gunman yet http://t.co/XnfKJC9HiB — 1385397076000

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Tune in at noon. RT @mgmcampbell: SWAT teams with long guns drawn are entering Phelps Hall #Yale http://t.co/pKtAiX3krD — 1385397078000

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Gunman Spotted On Yale Campus, #Yale University officials confirmed a report of a person with a gun on campus Monday morning — 1385397152000

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DEVELOPING: @FoxNews @CNN : #Yale students told to 'shelter in place' as school investigates report of gunman on campus — 1385397494000

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For one thing. A gun is stopping educating the young and bright in America right now. #Yale #GunControl — 1385397537000

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#UPDATE: Suspect in custody following threat that prompted lockdown at Martin Methodist College in Pulaski, http://t.co/EPWTAcJwRC — 1385397750000

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Fort Pierce school on lockdown after girl reports seeing gunman in woods http://t.co/nbTZRB4Lju #breaking — 1385397774000

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“@yaledailynews: NHPD Lieutenant Jeff Hoffman confirms no shootings, no injuries.” #yale @KNX1070 — 1385397778000

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#yale grad student Aaron Schlosser: "It seems like every other day there's a report of someone armed, on a campus." — 1385397861000

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I'm sorry - why is BBC interviewing a student from Southern CT State University about an incident at #Yale? — 1385397918000

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Right by Battell Chapel in the hear of campus MT @AudreyNBC: Officer walking with gun. Elm st. #yale @NBCConnecticut http://t.co/ixCxI8T50g — 1385397958000

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#Yale police activity centered around @Yale's Old Campus bordered by Elm/Chapel and College/High #NHV http://t.co/9ZIbStUM9u — 1385397970000

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#yale students around the Green are calm, waiting to see what happens next. — 1385398076000

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Businesses up and down Chapel Street between College and High are closed; @Starbucks, Panera Bread evacuated due to @Yale lockdown. #NHV — 1385398152000

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Latest @NYTMetro on #Yale gunman near Old Campus freshman dorms; most students are gone for Thanksgiving break http://t.co/gIvMWPVc39 — 1385398209000

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Few details/confirms on situation at #Yale - on lockdown amid reports of gunman on campus. Here's what we DO know: http://t.co/Cktw53Eqxd — 1385398984000

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@Yale on lockdown as investigators look into report of a gunman on campus. http://t.co/36iwaLi9SU #yale #yalegunman — 1385399324000

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Everything you need to know about Yale campus lockdown, report of shooter in this amazing Twitter timeline: https://t.co/uvlSnz1VVv — 1385399570000

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FROM CNN: Yale confirms reports of gunman on campus. Students are on recess, according to university's academic calendar... #Yale — 1385399821000

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WABC-TV helicopter. RT @byjenniferswift: There's a helicopter circling overhead. Can't tell if its news chopper or someone else. #yale — 1385400024000

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MT @nhrmoleary: Matt Pisani with Pierpont was doing campus electric work when he heard about man with gun.#nvh #yale http://t.co/3jwskHaSu2 — 1385400091000

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Yale University says police are investigating a report of a person with a gun on the Old Campus. Students on lockdown. — 1385400139000

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Call @News12NJ if u know a student from NJ attending @Yale involved in the lockdown. 732-346-3270 — 1385400170000

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@NBCConnecticut LIVE feed and continuous coverage of @Yale lockdown http://t.co/WUDYtMxFvc #NHV — 1385400419000

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Yale on lockdown as gun report investigated. Read more: http://t.co/SGGw5J0RyN or mobile friendly: http://t.co/XdVnwz15rT — 1385400541000

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#BREAKING RT @wral ALERT: Vance-Granville Community College on lockdown — 1385400573000

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MT @nhrmoleary: Jim just wanted coffee @ Atticus but got stopped when he reached Chapel where cops were.#nhv #yale http://t.co/ubXfSimApk — 1385400992000

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‘This is not a test’: Yale on lockdown as police in tactical gear hunt for gunman http://t.co/ehBKlIJxgs — 1385401016000

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NOW: #Yale lockdown media briefing set to begin shortly from the Shubert Theater in downtown New Haven. #NHPD say no shots have been fired. — 1385401472000

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Children's Hospital lockdown suspect also charged with child abuse. How police say he fractured the baby's skull http://t.co/xc4XBG1UVD — 1385401511000

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New Haven PD: anonymous caller said his roommate was on way to campus with a gun to shoot people. http://t.co/T4brJa97MW #yale #foxct — 1385401688000

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Per New Haven PD: a caller claims his roommate going to #Yale campus with a long-gun, no shots fired, no injuries, no weapon recovered. — 1385401693000

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SCJ News: Yale on lockdown as gun report investigated: Police have blocked off several downtown streets ne... http://t.co/LABKWPxChg #fb — 1385401773000

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[IMAGES] #Yale University on Lockdown after reports of a Gunman - Licence images here > http://t.co/tX8Mpu54XK http://t.co/e6U0vcbxW9 — 1385402189000

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Guns and schools the theme of the day as #Yale remains in lockdown; state pd releasing #SandyHook investigation summary this afternoon. — 1385402244000

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Per schools spokeswoman, schools in vicinity of downtown are in lockdown, Co-op High School in full lockdown #NHV @Yale — 1385402283000

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Hartland Consolidated Schools are on lockdown after what they are calling a "suspicous incident.": http://t.co/9i7s5ejpcn #backchannel — 1385402307000

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12:54pm UPDATE: From @Yale -No change in campus status - continue shelter in place http://t.co/Hjims1dEwI #wbz #yale — 1385402318000

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RT @RachelChinapen: Unmarked police cars lights and sirens speeding down crown #NHV #Yale — 1385402460000

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#NHPD PIO David Hartman: 9:30a 911 call stating roommate on way to #Yale campus with intention of 'shooting people' http://t.co/xsYgzYYnSm — 1385402650000

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#NHPD briefing: No ID of the 911 caller to police which started initial lockdown which remains in effect. #Yale — 1385402693000

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NOW: ATF, FBI, Connecticut State PD, NHPD and YPD along with additional law enforcement agencies involved in #Yale lockdown. — 1385402729000

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NOW: #NHPD briefing: Police are interviewing two witnesses who saw man with 'long gun' on campus now. #Yale — 1385402769000

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Police: #Yale is out of session for the holidays, that is helpful to them as swat teams go from school to school. #wfsb — 1385402859000

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PD: The call was cut short by the caller. They did not provide more information. It was more of a statement than a report to police. #Yale — 1385402985000

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PD: Call lasted just a few seconds, caller was calm, reported this in a "matter of fact" way. #Yale @mgmcampbell — 1385403157000

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NOW: #NHPD briefing on #Yale lockdown. - Don't know who called 9-1-1 - Don't know who suspect is. - No shooting reported. - No arrests. — 1385403176000

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No description of suspect is available because the several descriptions that have come in, were not consistent. #Yale — 1385403337000

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Police ask drivers to stay away from downtown New Haven near the @Yale campus because many streets are closed #Yale — 1385403531000

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The #Yale incident reminds me an awful lot of IUPUI's mysterious shooter call from earlier this spring. — 1385403596000

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#Yale RT @SKalyvas: @YanniKouts Yes, hard to say what is really going on — 1385403973000

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#YALE: Police say at least 2 people reported seeing a man with a long gun on campus. Latest details - http://t.co/uYiT5ohzKw #abc13 — 1385404232000

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#YALE: Anonymous caller told police his roommate was armed and headed to campus. More info - http://t.co/uYiT5ohzKw #abc13 — 1385404296000

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SWAT Teams have secured university in the downtown area. The entire University is now locked down as are several area public schools #yale — 1385405511000

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#Yale @yaledailynews: Armored truck, police van with about 30 heavily armed officers moving down High Street to OC. — 1385405640000

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NOW: College and Elm Street - very heavily armed SWAT entering #Yale building with weapons drawn. 20 or so went in. http://t.co/reakxhvuLJ — 1385405649000

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#NHV police spokesman says one of challenges is checking rooms because people are locked in, might not believe it's police knocking #Yale — 1385405849000

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1:45pm UPDATE: @YALE - Police will be doing room searches starting w/residential college areas #wbz #yale http://t.co/Hjims1dEwI — 1385405974000

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NOW: #NHPD spokesman says no new developments on determining identify of person who made initial 9-1-1 call that started #Yale lockdown. — 1385406149000

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#NHV police spokesman says caller who reported on alleged gunman today was asked to stay on phone but hung up #Yale — 1385406376000

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WATCH LIVE: Police hold a second press conference on the emergency situation at @Yale. http://t.co/jRFEhB9Gdl #Yalelockdown #Yale — 1385406474000

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http://t.co/92iBC76jzN afternoon top stories 11-25-13: Yale University is on lockdown due to reports of a gunma... http://t.co/5jX1u4Qx0K — 1385406613000

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UPDATE: #Yale alert says door-to-door search is being conducted-http://t.co/nfVhidYh6D (ah) — 1385406789000

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@milagrenia Was about to leave for the ISP when I saw an email about this. So at home. Wondering when lockdown will end. — 1385406793000

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A gunman on the loose at Yale has sent the school into lockdown. Stay up to date with our #RushHour breaking coverage http://t.co/2uMorYzMW7 — 1385407741000

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SWAT activity nearby briefly caused a lockdown at an east Houston middle school. http://t.co/8AR2rTvLtt #HPD #hounews — 1385408287000

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Gateway Community College is still on lockdown. 3pm and 3:30pm classes cancelled — 1385408317000

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Caller in the #Yale incident used phone booth on the 300 block of Columbus Ave. between Howard/Hallock. — 1385408968000

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The Sandy Hook report was just released. #wfsb will be switching between this and the ongoing #Yale lockdown. — 1385409735000

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UPDATE: Yale Univ. lifts lockdown for most of campus, except for Old Campus and Calhoun College areas - @ABC — 1385410857000

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Police: Expect the lockdown on Yale's Old Campus to be lifted soon, "Our campus emergency response system worked" #NHV @Yale — 1385411864000

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From @AP: Yale lockdown partially lifted, with exception of the Old Campus and Calhoun College sections of campus. http://t.co/VCDdvT1KqD — 1385412391000

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NOW: #NHPD and #YPD chiefs speaking now, they believe this day-long event at #Yale was a hoax and they're seeking a suspect. — 1385413095000

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UPDATE: Lockdown at Yale lifted except for 2 buildings as authorities search for man reportedly carrying a long gun http://t.co/HXujdL7ANV — 1385413128000

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Chief Esserman on the 911 caller: "We do not believe he was a Yale student or that he was talking about a #Yale student." — 1385413425000

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FEMA spokesman appears to make joke about Yale gun lockdown: http://t.co/JsNIvZMjrC — 1385413475000

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4 SWAT teams still doing door to door search on #Yale old campus. — 1385413480000

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DTN Japan: Yale lockdown mostly lifted, as police continue door-to-door search: The University Confirmed the R... http://t.co/af8JvbvNKs — 1385414362000

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Weapon report caused Sci Tech lockdown: Springfield?s High School of Science and Technology was locked down fo... http://t.co/61JOdroLKg — 1385415250000

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#Yale University on lockdown in gun scare, polis say campus safe, no gunman found http://t.co/KlTdd5sPnr — 1385415513000

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Protests growing, Thai minister puts #Bangkok on lockdown. http://t.co/DWDZN8XP0y — 1385416073000

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The latest on the lockdown at Yale University, @Schmitt4NY reports on News 4 New York at 5 p.m. Watch live: http://t.co/UDQQ9oFhUl — 1385416969000

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.@marymauldin @Yale Police have not found a gunman. The lockdown was just lifted about 30 mins ago. The inclination is that it's a hoax. — 1385417284000

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UPDATE: Lockdown completely lifted at Yale Univ. in Connecticut after search for reported gunman finds no suspect - @reiterABC — 1385417744000

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Police lines taken down, 'shelter in place' warnings lifted on #Yale campus following daylong search for gunman. #NHV — 1385417906000

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