Fatihah Rahmadayana and Yuliant Sibaroni, “Sentiment Analysis of Work from Home Activity using SVM with Randomized Search Optimization”, J. RESTI (Rekayasa Sist. Teknol. Inf.) , vol. 5, no. 5, pp. 936–942, Oct. 2021, doi: 10.29207/resti.v5i5.3457.