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Related Experiment Video

Updated: Apr 28, 2026

Rare Event Detection Using Error-corrected DNA and RNA Sequencing

Rare Event Detection Using Error-corrected DNA and RNA Sequencing

Published on: August 3, 2018

HECTOR: a parallel multistage homopolymer spectrum based error corrector for 454 sequencing data.

Adrianto Wirawan¹, Robert S Harris, Yongchao Liu

¹Institut für Informatik, Johannes Gutenberg Universität Mainz, Mainz, Germany. wirawan@uni-mainz.de.

BMC Bioinformatics

|June 3, 2014

Summary

HECTOR is a new tool that corrects homopolymer errors in 454 sequencing data. This parallel, homopolymer spectrum-based error corrector is faster than existing methods while maintaining high accuracy.

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Last Updated: Apr 28, 2026

Rare Event Detection Using Error-corrected DNA and RNA Sequencing

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Detection of Rare Genomic Variants from Pooled Sequencing Using SPLINTER

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Published on: June 23, 2012

Area of Science:

Bioinformatics
Genomics
Computational Biology

Background:

Next-generation sequencing technologies provide high-throughput data but contain errors.
Homopolymer errors (insertions/deletions) are a major challenge in 454 pyrosequencing.
Existing error correction methods do not specifically address homopolymer errors in 454 reads.

Purpose of the Study:

To develop an efficient error correction method for 454 sequencing data.
To specifically target and correct homopolymer insertion and deletion errors.
To evaluate the performance and scalability of the new method.

Main Methods:

Developed HECTOR, a parallel, multistage homopolymer spectrum-based error corrector.
Utilized a novel homopolymer spectrum approach to identify and correct homopolymer errors.
Evaluated performance using simulated and real 454 pyrosequencing datasets.

Main Results:

HECTOR demonstrates comparable correction quality to state-of-the-art methods like Coral.
HECTOR runs 3.7× faster than Coral on average.
The method performs effectively even with low sequencing coverage.

Conclusions:

HECTOR offers a practical and competitive solution for 454 pyrosequencing read error correction.
The homopolymer spectrum approach has linear time complexity and can handle arbitrary-length errors.
HECTOR's multi-threaded design ensures efficient parallel processing.