I am using fastMMN for batch correction and subsequently buildSNNGraph and cluster_walktrap for clustering on single-cell rna seq data on multiple samples. However, I end up with way higher number of clusters compared to what I would expect. By setting the steps parameter in cluster_walktrap it is possible to change the number of clusters.
Are there any other parameters or ways to reduce the number of clusters identified, similar to i.e. setting the resolution in FindClusters in the seurat pipeline?