monkey0head

Hi! I mentioned that you use this idf formula: idf(t) = log [ n / (df(t) + 1) ]) in knn models. Why did you choose this one? I am...

data transfer to Kafka

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## 🚀 Feature Request Find out how to preprocess and pass model weights/vectors to Kafka ### Motivation Models inference

brilliant return of good old datapreparator

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- different public methods for reading, dataframes check, absent columns adding are created - method transform to apply all stages successively added - new tests

## 🚀 Feature Request Update model with new data in efficient way. https://docs.google.com/spreadsheets/d/1oULhfyWgA3rqb3M9NzlBiWeY80xNYizUodyv0tQW9Js/edit#gid=888497155 ### Motivation Work with bigger data volumes, Update model without re-fit.

## 🚀 Feature Request Replace RDD-based operations in metric calculation with UDF to replace with Scala UDF in future ### Motivation Metrics calculation speed up

## 🚀 Feature Request Implement metrics with normalisation: MAP, NDCG, HitRate, Roc Auc, Precision, Recall https://arxiv.org/pdf/1801.07030.pdf ### Motivation For RS simulator

catboost 1.2 installation error

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Problem: Catboost 1.2 installation fails with ``` Could NOT find Python3 (missing: Python3_INCLUDE_DIRS Python3_LIBRARIES Development Development.Module Development.Embed) ``` I am trying to install catboost 1.2 inside virtual environment with python...

Hi! You presented a [paper](https://arxiv.org/abs/2209.04147) regarding simulation of industrial challenges with OBP at the RecSys'22. I found it very interesting and want to understand some details. I found the [pr](https://github.com/st-tech/zr-obp/pull/177)...

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