Given a set of
32000 headlines and their labels, whether that headline is a clickbait (label
0), you’re asked to build a model to detect clickbait headlines.
Based on my experience in different industries, as an AI/ML Practitioner/Applied Scientist, generally, I prioritize the techniques as below:
- Conventional (Random Forst, Logistic Regreesion, XGBoost, SVM, etc.)
- At this phase: find potential issues e.g. lack of enough training data, bias, skewness, noise, etc. Also apply simple enhancements such as text normalizations, text fixing, using different types of classifiers, manual boosting, TTA, etc.
- Detecting Clickbaits (3/4) - Logistic Regression and
- Detecting Clickbaits (4/4) - Manual Boosting
- This has super fast train and dev cycles (
1.3sfor training a model for this problem).
- Better model explainability and hence easier to detect issues.
- Transfer Learning
- Again, try find potential issues with the data, fixing text encodings, etc.
- Detecting Clickbaits (2/4) - Universal-Sentence-Encoder Transfer Learning
- This has much longer cycles compared to conventional methods. In this case, it took 45mins to train the network for 2 epochs.
- It can benefit from the pre-trained language models such as BERT, USE, ELMo, etc.
- Overall it has much more cost of training/tuning and maintenance.
- Deep Learning (CNN, LSTM, Transformers, etc.)
- The most expensive approach.
- Usually takes many more cycles to find the right structure and parameters and tune them compared to TL.
- This is recommended for text classification, for other types of unstructured data you might want to skip the conventional algorithms and start from transfer learning.
- There is always exceptional situations.