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SwedenTechnology and telecom2011 – ongoing

Ericsson

TRR machine-learning assignment of software bug reports

Ericsson's TRR automatically assigned 30% of incoming bug reports with 75% accuracy

WorkingCompany's own claim

Problem

Experienced Ericsson engineers spent substantial time assigning incoming bug reports to development teams. Their specialist knowledge became a bottleneck.

Approach

Research began in 2011 and developed into Ericsson's internal TRR product. A logistic-regression classifier used report descriptions and structured attributes. Automatic routing began in April 2019 and was restricted to sufficiently confident predictions.

Results

30%average share of incoming bug reports automatically assigned in the joint industry-academic studyCompany's own claim[1]
75%accuracy of automatic assignments in the studyCompany's own claim[1]
around 21%faster resolution of automatically routed reports within Ericsson, as reported by the studyCompany's own claim[1]

Takeaway

Selective automatic routing left other reports for human judgment. Teams working on lower-level modules experienced drawbacks that were less apparent in higher-level modules.

Categories

Business function
IT and R&D
Innovation type
Process innovation
Evidence
Company's own claim

Sources

Source summaries

[1]arXiv19 Sep 2022

The researchers combined bug-tracking data with interviews to examine TRR's development and use. They reported automatic assignment of 30% of reports at 75% accuracy and around 21% faster resolution for automatically routed reports. Ericsson employees coauthored the study.

Full details are in the original sources.

Added 1 Nov 2026 · Updated 1 Nov 2026
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