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    7 posts tagged with "data-analysis"

    Meet Pandas: Converting DataFrame to CSR Matrix

    March 08, 2022  |  2 min read

    This post shows how to convert a DataFrame of user-item interactions to a compressed sparse row (CSR) matrix, the most common format for sparse matrices.


    Meet Pandas: Group-wise Sampling

    October 13, 2020  |  2 min read

    This post introduces how to sample groups from a dataset, which is helpful when you want to avoid data leakage.


    Meet Pandas: Query Dataframe

    August 25, 2020  |  2 min read

    This post introduces the Pandas method of `query`, which allows us to query dataframes in an SQL-like manner.


    Meet Pandas: Grouping and Boxplot

    June 14, 2020  |  2 min read

    This post summarizes how to group data by some variable and draw boxplots on it using Pandas and Seaborn.


    Meet Pandas: loc, iloc, at & iat

    April 27, 2020  |  2 min read

    Have you ever confused Pandas methods `loc`, `at`, and `iloc` with each other? It's no more confusing when you have this table in mind.


    Evaluating Academic Papers by PageRank

    February 28, 2020  |  3 min read

    Citation counts shouldn't be the only measurement of the impact of academic papers. I applied Google's PageRank to evaluating academic papers's importance.

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