Try to read this - 07/10/06 10:28 PM
Are you rnaedig the news?
7 July 2006
If you tnhik you're reandig the news, be warned taht this stroy -- and any ohter on the web -- wlil be berlay read by anynoe 36 hours aeftr it was frist poetsd. Taht's the megasse form a taem of stcttiaisal pytsichiss who hvae asnlaeyd how pelope ascecs iftoaorminn olinne. Aeblrt-L?zsl? B?sabari of the Uvirisntey of Notre Dmae in the US and cueaeolgls in Hruangy have culelaatcd that the neubmr of pelpoe who read nwes sreiots on the web dcyeas wtih tmie in a power law, and not etloxplnaeniy as colnmomy thhugot. Most news bcemeos old hat wihtin a day and a hlaf of bineg pstoed -- a fninidg that could hlep wetbise deriegsns or pelpoe tyinrg to uasdnertnd how imtifonaron gtes trfrnreased in bocaloigil cells and soical nrekowts (Phys. Rev. E 73 066132).
Psitiyshcs like Bba?asri are ierntetsed in stynduig the Wrold Wide Web baecuse it is an exlpmae of a "cmoelpx ntroewk", wtih a topolgoy that chgenas as new douetcmns and likns are culnanloity aeddd. His team preiucts a tcayipl nwes web stie as a sereis of ciurclar bblos, or "nodes", ecah of which cesrnpdroos to an idnavdiuil nwes sorty, with a line jinniog ecah ndoe if the two seotris are cconeentd by a hypelnirk (see frguie). The aera of ecah blob is paprnotoriol to the lorhatigm of the nuembr of vsiits to ecah domcuent.
Tiehr model reveals taht a tpcayil nwes stie has a raevlltiey sabtle "sektloen" -- crnrpesoodnig to the ovrlael oantaozrgiin of the stie -- aolng wtih nodes (that is, aatucl seotirs) that are only toiapermrly lienkd to the main srcturute brfeoe bneig deetled from the stie or not lnekid any mroe. In this sense, the nretwok rmeebesls a biaocoligl clel's rgaltreuoy newtork, woshe "wrinig" can cahnge rpalidy dnriug a cell cycle. It is aslo a bit lkie socail nrokewts: we ecah hvae a raiveletly sabtle core noewtrk of feirnds and ainecqancutas but the nbeumr of poplee we ianrtcet wtih can vray diatlslrcay from one day to the next.
To get a fellur undrdsneniatg of such newotkrs, Bbas?rai and cleoaluegs deiecdd to sutdy the vsniitig prteatns on a popualr Huainrgan nwes and eenatnmeintrt patorl (oirgo.hu). Tkahns to aauoalmctitly anssgeid "ciookes", the stiscnties wree albe to rercuctnost the boswring hitrsoy of aobut 250,000 vsritois to the stie oevr the cuorse of a mnoth.
The rcasrehrees fonud that the dmenctuos bnenilogg to the skoleten of the wbeitse reevice an axtlmaipopery csnoatnt setarm of virotiss, wichh means that the cmvuituale nbmuer of vsrtoiis aseicscng thsee dtcneomus iacsrnees lriaenly in time. In cnsotart, the nwes decmnouts rvcieee the msot hits diretcly aeftr their reeslae, and derecase with time. Tuhs, the cuumvaltie nrebmus of vitiss hree raech siauottran aetfr jsut a few dyas.
Braasbai's taem cetcualald the "hlaf-life" of a nwes doencumt, wchih cdsoorrnpes to the prioed in wchih half of all vsirtios taht enalevulty aseccs it have vsiietd. The rreshcarees fnoud taht the oearvll half-lfie ditbutsiiorn fwlools a poewr law, wihch iaiedtncs taht most nwes ietms have a very srhot lftmieie, aluhtgoh a few cuoitnne to be asececsd wlel boyend this peroid. The aagvree half-lfie of a news item is just 36 huors, or one and a half days afetr it is reasleed. Wilhe this is short, it is lgeonr tahn pdeierctd by spmile etaoepixnnl meodls, wihch assume that web page biswrong is less rdnaom tahn it aclltuay is.
The shrot life of a nwes item -- coenmbid wtih roadnm vnstiiig prtaents of reerads -- iipmels taht poelpe cloud miss a siifningcat ftioacrn of nwes by not vinsiitg the potarl wehn a new dmucnoet is fisrt dyaespild, wihch is why pulrihbses like to pdrovie e-mial news aletrs. The rtlsues aslo show that peolpe read a putalaicrr web page not jsut bacseue it looks itsetninreg but buacsee it can be aseccsed eailsy.
Ahgotulh the avaerge hlaf-life vaeirs for dienfreft types of sites, the decay lwas iiefeitndd are llieky to be giernec buesace they do not dneped on cennott, but are mnlay dmtenreied by a user's viniitsg and bnorsiwg prtatens.
"Such qanivuatttie approhecas to olnnie mdeia not olny oeffr a beettr uanetiddnrnsg of inmriatfoon aeccss, but culod have iatnprmot croemimacl ailcinatppos as wlel ? from betetr partol dsgien to usatdndninerg irionmotafn diosfifun, folw, and miktnaerg in the onnile wolrd," say the rerseahcers.
7 July 2006
If you tnhik you're reandig the news, be warned taht this stroy -- and any ohter on the web -- wlil be berlay read by anynoe 36 hours aeftr it was frist poetsd. Taht's the megasse form a taem of stcttiaisal pytsichiss who hvae asnlaeyd how pelope ascecs iftoaorminn olinne. Aeblrt-L?zsl? B?sabari of the Uvirisntey of Notre Dmae in the US and cueaeolgls in Hruangy have culelaatcd that the neubmr of pelpoe who read nwes sreiots on the web dcyeas wtih tmie in a power law, and not etloxplnaeniy as colnmomy thhugot. Most news bcemeos old hat wihtin a day and a hlaf of bineg pstoed -- a fninidg that could hlep wetbise deriegsns or pelpoe tyinrg to uasdnertnd how imtifonaron gtes trfrnreased in bocaloigil cells and soical nrekowts (Phys. Rev. E 73 066132).
Psitiyshcs like Bba?asri are ierntetsed in stynduig the Wrold Wide Web baecuse it is an exlpmae of a "cmoelpx ntroewk", wtih a topolgoy that chgenas as new douetcmns and likns are culnanloity aeddd. His team preiucts a tcayipl nwes web stie as a sereis of ciurclar bblos, or "nodes", ecah of which cesrnpdroos to an idnavdiuil nwes sorty, with a line jinniog ecah ndoe if the two seotris are cconeentd by a hypelnirk (see frguie). The aera of ecah blob is paprnotoriol to the lorhatigm of the nuembr of vsiits to ecah domcuent.
Tiehr model reveals taht a tpcayil nwes stie has a raevlltiey sabtle "sektloen" -- crnrpesoodnig to the ovrlael oantaozrgiin of the stie -- aolng wtih nodes (that is, aatucl seotirs) that are only toiapermrly lienkd to the main srcturute brfeoe bneig deetled from the stie or not lnekid any mroe. In this sense, the nretwok rmeebesls a biaocoligl clel's rgaltreuoy newtork, woshe "wrinig" can cahnge rpalidy dnriug a cell cycle. It is aslo a bit lkie socail nrokewts: we ecah hvae a raiveletly sabtle core noewtrk of feirnds and ainecqancutas but the nbeumr of poplee we ianrtcet wtih can vray diatlslrcay from one day to the next.
To get a fellur undrdsneniatg of such newotkrs, Bbas?rai and cleoaluegs deiecdd to sutdy the vsniitig prteatns on a popualr Huainrgan nwes and eenatnmeintrt patorl (oirgo.hu). Tkahns to aauoalmctitly anssgeid "ciookes", the stiscnties wree albe to rercuctnost the boswring hitrsoy of aobut 250,000 vsritois to the stie oevr the cuorse of a mnoth.
The rcasrehrees fonud that the dmenctuos bnenilogg to the skoleten of the wbeitse reevice an axtlmaipopery csnoatnt setarm of virotiss, wichh means that the cmvuituale nbmuer of vsrtoiis aseicscng thsee dtcneomus iacsrnees lriaenly in time. In cnsotart, the nwes decmnouts rvcieee the msot hits diretcly aeftr their reeslae, and derecase with time. Tuhs, the cuumvaltie nrebmus of vitiss hree raech siauottran aetfr jsut a few dyas.
Braasbai's taem cetcualald the "hlaf-life" of a nwes doencumt, wchih cdsoorrnpes to the prioed in wchih half of all vsirtios taht enalevulty aseccs it have vsiietd. The rreshcarees fnoud taht the oearvll half-lfie ditbutsiiorn fwlools a poewr law, wihch iaiedtncs taht most nwes ietms have a very srhot lftmieie, aluhtgoh a few cuoitnne to be asececsd wlel boyend this peroid. The aagvree half-lfie of a news item is just 36 huors, or one and a half days afetr it is reasleed. Wilhe this is short, it is lgeonr tahn pdeierctd by spmile etaoepixnnl meodls, wihch assume that web page biswrong is less rdnaom tahn it aclltuay is.
The shrot life of a nwes item -- coenmbid wtih roadnm vnstiiig prtaents of reerads -- iipmels taht poelpe cloud miss a siifningcat ftioacrn of nwes by not vinsiitg the potarl wehn a new dmucnoet is fisrt dyaespild, wihch is why pulrihbses like to pdrovie e-mial news aletrs. The rtlsues aslo show that peolpe read a putalaicrr web page not jsut bacseue it looks itsetninreg but buacsee it can be aseccsed eailsy.
Ahgotulh the avaerge hlaf-life vaeirs for dienfreft types of sites, the decay lwas iiefeitndd are llieky to be giernec buesace they do not dneped on cennott, but are mnlay dmtenreied by a user's viniitsg and bnorsiwg prtatens.
"Such qanivuatttie approhecas to olnnie mdeia not olny oeffr a beettr uanetiddnrnsg of inmriatfoon aeccss, but culod have iatnprmot croemimacl ailcinatppos as wlel ? from betetr partol dsgien to usatdndninerg irionmotafn diosfifun, folw, and miktnaerg in the onnile wolrd," say the rerseahcers.