Citirea posturilor a fost controlată de algoritmi ce au ignorat folosirea cuvântului „bolnav” cu sens figurat, iar accentul pentru predicţiile personale de îmbolnăvire s-a pus pe relaţiile interumane:
„Considerând că 3 dintre prietenii tăi au simptome asemănătoare gripei şi că te-ai întâlnit cu 8 oameni, posibil străini, care s-au plâns de dureri de cap, care e posibilitatea să te îmbolnăveşti? De vreme ce majoritatea posturilor de pe Twitter conţin informaţii GPS, le putem proiecta pe hartă şi observa cum interacţionează oamenii bolnavi cu cei sănătoşi. Modelul nostru apoi prezice când un individ se va îmbolnăvi” spune Sadilek.
Algoritmul se „uită” atât la sănătatea prietenilor unui utilizator, cât şi la sănătatea străinilor din aceeaşi zonă, crescând precizia estimării: algoritmul este corect în 90% din cazuri şi prezice boala cu 8 zile în avans.
sursa: improvComm
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