Duplicatiegraad

Duplicatiegraad, or duplication rate, is a metric used to describe the proportion of duplicates within a dataset, content collection or sequencing data. It expresses how much data is redundant and is often given as a percentage. The exact interpretation can depend on the domain and the method used to identify duplicates.

In data storage and backup, duplicatiegraad refers to the share of data that consists of duplicate blocks that can be eliminated by deduplication. A higher rate indicates more redundancy and potential space savings, though the practical meaning depends on whether duplicates are counted per block, per file, or per dataset. In practice, duplication rate helps assess storage efficiency and the effectiveness of deduplication processes.

In genomics and sequencing, duplication rate indicates the fraction of reads that are identical copies, typically resulting from PCR amplification or sequencing bias. After marking duplicates with computational tools, the rate is reported as a percentage of total reads. A high duplication rate can reduce the effective coverage and affect downstream analyses.

In text corpora or document collections, duplication rate refers to the proportion of documents or passages that are duplicates or near-duplicates of others. High duplication can inflate counts and bias analyses. Detection methods include fingerprinting, hashing and content-similarity measures.

Factors influencing duplicatiegraad include data collection practices, sampling depth, preprocessing methods and library preparation in sequencing. To reduce duplication, techniques such as data deduplication, improved collection protocols, removal of exact or near-duplicate content, and use of unique molecular identifiers in sequencing may be employed. Lower duplication rates generally improve storage efficiency and data quality, reducing biases in analysis.