action_seqs_summary: Summarize action sequences
In ProcData: Process Data Analysis

Summarize action sequences

1	action_seqs_summary(action_seqs)

action_seqs

a list of action sequences.

a list containing the following objects:

`n_seq`	the number of action sequences
`n_action`	the number of distinct actions
`action`	the action set
`seq_length`	sequence lengths
`action_freq`	action counts
`action_seqfreq`	the number of sequences that each action appears
`trans_count`	a `length(action)` by `length(action)` matrix whose element in the i-th row and j-th column is the counts of transition from `action[i]` to `action[j]`.