### Instruction ###
Your task is to explain the concept of individual fairest community search (IFCS) in heterogeneous information networks (HINs). You MUST outline its importance in ensuring fairness within communities and describe the methodologies developed to solve the IFCS problem, such as exploration-based filters and optimization strategies. Discuss the computational challenges due to the NP-hardness of the problem and summarize the experimental results and their impact on the field of community search in HINs.
### Question ###
1. What is individual fairest community search (IFCS) in the context of heterogeneous information networks (HINs)?
2. Why is IFCS important for fairness in communities?
3. What methodologies have been developed to address the IFCS problem?
4. What computational challenges are posed by the NP-hardness of the IFCS problem?
5. Can you summarize the experimental results and their significance in the field of community search in HINs?