Liyan Song

Registered user since Wed 2 Jun 2021

Name:Liyan Song

My main research area focuses on machine learning and its application to predictive software engineering (i.e., software defect prediction and software effort estimation).

My main research area is the classical machine learning (ML), including regression and classification, statistical ML, Bayesian regression, class imbalance learning, online learning, ensemble learning and so on. I myself also had done a few works on unsupervised ML, specifically independent component analysis (ICA), in the gap year of my PhD period.

Together with some PhD / master students in our group, I also work with deep neural network (DNN) on image data. I know the basic things, being capable of making analysis on the networks, but I am not good at constructing / designing the architecture of deep networks though people are always telling me that to be simple, neither do I be familiar with those fancy, tricky and interesting skills to make DNNs working well.

Regarding the application of software engineering, I am working with the below two tasks:

1) Just-in-time software defect prediction (JIT-SDP) is typically a binary classification problem with highly class imbalance. Machine learning skills required include binary classification, online learning, imbalance learning, dealing with label noise and so on. We can explore and dig out experimental data from GitHub.

2) Software effort estimation (SEE) is a regression problem with small data and highly “label noise”. The datasets are scare and the data in each dataset is small. The data quality is NOT high.

Affiliation:Southern University of Science and Technology, China
Research interests:software effort estimation, software defect prediction, machine learning


ICSE 2020 Author of An Investigation of Cross-Project Learning in Online Just-In-Time Software Defect Prediction within the Technical Papers-track