应用与背景 面些毛子种枝大” XIDIAN UNIVERSITY ▣层次主题模型 Laptops (0)laptop used computer get will screen just work +like windows screen great work new macbook look (-)battery screen hour problem time windows hp drive Performance Screen Battery Service 8an9s8 (0)service support customer laptop (-drive gb hard ram external need grea warranty amazon service yea )glossy black see review rest feel (-)battery hour life time will less (-)problem support customer call Graphics Card Screen Size Portability Support Warranty (0)ram card graphic video memory 0)screen inch laptop new previous O)laptop around carry portable 0)support service tech call phone (+gb ram perform game better fps +inch resolution solid like size (+)laptop size carry perfect small +year warranty accident protect (-)gb video ram dedicate upgrade -resolution inch small display (-)battery life hour normal half (-support call tech hour took time CPU Screen Quality Visibility Battery Life Repair (0)core processor intel duo ghz (O)screen led backlight ld bright O)battery hour life get computer 0)repair send back replace ship (+core intel dual fast duo cpu ghz +led screen color bright really (+)battery hour good last long send repair serice back sent unit (-)intel amd old atom power lower (-)screen glare issue glossy reflect (-)battery life power less evenfast (-back ship day send week away 3/15/2020 计算机科学与技术学院 应用与背景  层次主题模型 3/15/2020 9 计算机科学与技术学院