RT-alignment
Graph-based time alignment algorithms for multiple LC-MS datasets
...An LC-MS analysis of a complex biological sample can be visualized as a “map” of which the positional coordinates are the mass-to-charge ratio (m/z) and chromatographic retention time (RT) of the chemical species profiled. Label-free quantitative-proteomics requires the alignment and comparison of multiple LC-MS maps to ascertain the reproducibility of experiments or reveal proteome changes under different conditions. The main challenge in this task lies in correcting retention time shifts, which are inevitable even on the same instrument and under the same elution conditions. ...