PMID- 36359713 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221126 IS - 1099-4300 (Electronic) IS - 1099-4300 (Linking) VI - 24 IP - 11 DP - 2022 Nov 8 TI - Minimizing the Spread of Negative Influence in SNIR Model by Contact Blocking. LID - 10.3390/e24111623 [doi] LID - 1623 AB - This paper presents a method to minimize the spread of negative influence on social networks by contact blocking. First, based on the infection-spreading process of COVID-19, the traditional susceptible, infectious, and recovered (SIR) propagation model is extended to the susceptible, non-symptomatic, infectious, and recovered (SNIR) model. Based on this model, we present a method to estimate the number of individuals infected by a virus at any given time. By calculating the reduction in the number of infected individuals after blocking contacts, the method selects the set of contacts to be blocked that can maximally reduce the affected range. The selection of contacts to be blocked is repeated until the number of isolated contacts that need to be blocked is reached or all infection sources are blocked. The experimental results on three real datasets and three synthetic datasets show that the algorithm obtains contact blockings that can achieve a larger reduction in the range of infection than other similar algorithms. This shows that the presented SNIR propagation model can more precisely reflect the diffusion and infection process of viruses in social networks, and can efficiently block virus infections. FAU - Dai, Caiyan AU - Dai C AD - College of Artificial Intelligence and Information Technology, Nanjing University of Chinese Medicine, Nanjing 210023, China. FAU - Chen, Ling AU - Chen L AD - College of Information Engineering, Yangzhou University, Yangzhou 225012, China. FAU - Hu, Kongfa AU - Hu K AD - College of Artificial Intelligence and Information Technology, Nanjing University of Chinese Medicine, Nanjing 210023, China. AD - Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of Tumor, Nanjing 210023, China. FAU - Ding, Youwei AU - Ding Y AD - College of Artificial Intelligence and Information Technology, Nanjing University of Chinese Medicine, Nanjing 210023, China. LA - eng PT - Journal Article DEP - 20221108 PL - Switzerland TA - Entropy (Basel) JT - Entropy (Basel, Switzerland) JID - 101243874 PMC - PMC9689805 OTO - NOTNLM OT - SNIR model OT - minimize virus infection OT - precise isolation COIS- The authors declare no conflict of interest. EDAT- 2022/11/12 06:00 MHDA- 2022/11/12 06:01 PMCR- 2022/11/08 CRDT- 2022/11/11 01:12 PHST- 2022/09/01 00:00 [received] PHST- 2022/10/29 00:00 [revised] PHST- 2022/11/07 00:00 [accepted] PHST- 2022/11/11 01:12 [entrez] PHST- 2022/11/12 06:00 [pubmed] PHST- 2022/11/12 06:01 [medline] PHST- 2022/11/08 00:00 [pmc-release] AID - e24111623 [pii] AID - entropy-24-01623 [pii] AID - 10.3390/e24111623 [doi] PST - epublish SO - Entropy (Basel). 2022 Nov 8;24(11):1623. doi: 10.3390/e24111623.