Naslov
Building a second opinion: learning cross-company data

Autori
Kocaguneli, Ekrem ; Cukic, Bojan ; Menzies, Tim ; Lu, Huihua

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proc. of 9th International Conference on Predictive Models in Software Engineering, PROMISE '13 / Turhan, Burak - Baltimore (MD) : The Association for Computing Machinery (ACM), 2013, 1-10

ISBN
978-1-4503-2016-0

Skup
ACM 9th International Conference on Predictive Models in Software Engineering, PROMISE '13

Mjesto i datum
Baltimore (MD), Sjedinjene Američke Države, 19.10.2013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
crosscomputing; management; measurement

Sažetak
Background: Developing and maintaining a software effort estimation (SEE) data set within a company (within data) is costly. Often times parts of data may be missing or too difficult to collect, e.g. effort values. However, information about the past projects -although incomplete- may be helpful, when incorporated with the SEE data sets from other companies (cross data). Aim: Utilizing cross data to aid within company estimates and local experts ; Proposing a synergy between semi-supervised, active and cross company learning for software effort estimation. Method: The proposed method: 1) Summarizes existing unlabeled within data ; 2) Uses cross data to provide pseudo-labels for the summarized within data ; 3) Uses steps 1 and 2 to provide an estimate for the within test data as an input for the local company experts. We use 21 data sets and compare the proposed method to existing state-of-the-art within and cross company effort estimation methods subject to evaluation by 7 different error measures. Results: In 132 out of 147 settings (21 data sets X 7 error measures = 147 settings), the proposed method performs as well as the state-of-the-art methods. Also, the proposed method summarizes the past within data down to at most 15% of the original data. Conclusion: It is important to look for synergies amongst cross company and within-company effort estimation data, even when the latter is imperfect or sparse. In this research, we provide the experts with a method that: 1) is competent (performs as well as prior within and cross data estimation methods) 2) reflects on local data (estimates come from the within data) ; 3) is succinct (summarizes within data down to 15% or less) ; 4) cheap (easy to build).

Izvorni jezik
Engleski

Znanstvena područja
Računarstvo

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