Input_preprocess: Checking the input data.
In BinDuan/MASCOT: Model-based Analysis of Single cell CRISPR knockOuT screening

Integrating the expression profile and corresponding sample information, including each sample's knockout gene, detected sgRNA and batch information.

1	Input_preprocess(expression_profile, sample_info_gene, sample_info_sgRNA, sample_info_batch = NULL)

`expression_profile`	A dataframe showing the original expression profile with sample names and gene names.
`sample_info_gene`	A character vector showing the knockout gene of each sample. The vector's column name is the sample name.
`sample_info_sgRNA`	A character vector showing the sgRNA detected in each sample. The vector's column name is the sample name.
`sample_info_batch`	NULL by default. A character vector showing the batch of each sample. The vector's column name is the sample name.