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Hello everyone, I have completed introducing some code from v-hasu's branch into mine, mainly for Features, FeatureVector and FeatureManager classes. I have pushed the changes to https://github.com/ayshtmr/xapian/tree/letor-update. I am now proceeding to write unit tests for feature modules. There are a few things that I wanted to clarify: 1. I have introduced a lot of code in a single

...ad of RankList. Do you have any suggestions for this part? 4. For FeatureVector, I think it could be discarded since it just stores the information of feature vector of each document, those information will be stored in the new class in MSet::Internal mentioned in 3. 5. For Feature (letor_feature.cc), I think it could be a static class. It mainly focuses on the calculation of different features. For this part, I?m trying to figure out a better method to implement it. In the meeting last week, Olly and Parth suggested using a dispatching function to calculating different kinds o...