ZhiZhi Gewu

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ZhiZhi Gewu

A Graphical Illustration on the Barrow Proof on The Fundamental Theorem of Calculus

Recently, I am reading the book Calculus by Michael Spivak as usual and made it to the Fundamental Theorem of Calculus. While I understand the steps of the proof, I found it hard to develop the intuition and the meaning of the Theorem which states as follows: If we investigate

How I Survived Teaching Myself Calculus with Michael Spivak?

I initially planned to pen down this blog post after completing Michael Spivak’s Calculus. However, with my motivation dwindling near the end, I thought it best to start early. The primary impetus for delving deeper into mathematics is its indispensable role in comprehending science, and in turn, our world.

What Is a Randomized Controlled Trial? From Clinical Trials to Credit Policies

Randomized Controlled Trials (RCTs) are renowned as the gold standard in clinical trials, predominantly used to gauge the efficacy of new treatments. However, the applicability of RCTs extends far beyond merely clinical trials. In my line of work, we employ randomized experiments to evaluate the performance of varying credit underwriting

In Pursuit of Passion: The Unfinished Quest for Career Fulfillment

Many individuals grapple with job satisfaction and long-term career goals. While some may not be content with the rate of their professional growth within their current organization, others may be introspective, contemplating their aspirations and objectives for the future. This article focuses on the latter group, a mentality that I

A Mid-Year Reflection on the Year 2023

At the beginning of 2023, I wrote a New Year Planning: 2023 | Data Driven Everything (data-driven-everything.com). With a quarter already behind us, it’s time to reflect on my progress. I aspire to become a person with the following traits: * High moral standards, righteousness, and trustworthiness * Humility * Usefulness to

Revolutionizing Data Analytics with Text-to-SQL

A significant portion of a Data Analyst or Business Intelligence Analyst’s time is spent translating business questions into SQL queries. These analysts often serve as an interface between humans asking questions and the computers processing the data. In business settings, Software Engineers essentially act as translators, converting business requirements

Markov Decision Process in Account Management of Consumer Lending

Recently, one of the main questions in my mind is how to adjust the user’s credit limit given a predicted risk. I consider myself a practitioner in the industry with limited experience. Currently, the account management process relies more on expert judgement. We may decrease the limit or freeze