Figure 2. Different approaches for error corrections.

(A) K-spectrum approach: a set of substrings of fixed length k are extracted from the read and ready to filter. (B) Suffix tree/array approach: a set of substrings of different lengths of k (suffixes) are extracted from the read, represented in the suffix tree, and ready to filter. (C) Multiple sequence alignment approach: reads are aligned to each other to define consensus bases and correct erroneous ones.