# Blog

## Cholesky decomposition conversation

Cholesky decomposition is a method used in linear algebra to decompose a positive definite matrix into the product of a lower triangular matrix and its conjugate transpose. It's commonly used in numerical simulations, optimization problems, and solving systems of linear equations as it simplifies matrix operations and calculations compared to other methods.

# Current and future tools

One of the greatest skills a data professional can have is learning how to apply their knowledge of one tool to another tool. Throughout your career, you might discover that different organizations you work for use different tools—and in the field of data science, new and emerging technologies mean that exciting new tools are being developed all the time. This means there will always be opportunities to expand your data science toolkit! In this reading, you will learn more about tools today, including some of the tools you’re going to learn about in this program. You will also explore some of the exciting ways tools are evolving and what that might mean for your toolkit in the future. Finally, you will explore a demonstration that illustrates how you’ll be using some of these tools in the very near future.

## Five principles for data team building

After you join a data team, there are still challenges to building a data-driven organization. Below you will find five principles that can guide any organization to becoming more effective when facing the challenges of data analysis, regardless of the structure of your data teams within the company.

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## Latest posts

#### why eventhough the r is denominator in LM formula, the slope of LM still goes upward

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Alright! Let me simplify this for you. We’re talking about the **LM curve**, which shows the relationship between **interest rates (r)** and **income (Y)**. Now, you’re asking why this curve **slopes upward**, even though **r** is in the denominator in the formula.

#### Who won the debate last night between Harris and Trump

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In the September 10, 2024, presidential debate between Kamala Harris and Donald Trump, early analyses suggest that Kamala Harris was seen as the winner by several experts and media outlets. According to a flash poll and expert opinions, Harris performed slightly better, earning higher marks for her responses on issues like the economy, healthcare, and foreign policy. While both candidates were criticized for avoiding certain questions and sharing biased data, Harris received a C grade, compared to Trump's C- in some analyses【38†source】.

#### What is the purpose of cash flow statement?

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A cash flow statement is a financial document that provides a detailed summary of a company's cash inflows and outflows over a specific period, typically divided into operating, investing, and financing activities. Its main purposes are:

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## The global rout continues, with the Topix experiencing its worst day since 1987

#### Why the government of Japan increase their interest rate?

Recent news

The Japanese government, through the Bank of Japan (BOJ), raised interest rates in August 2024 in response to growing inflationary pressures. Japan had experienced years of low inflation, even deflation, but by mid-2024, inflation had accelerated beyond expectations, driven by higher energy costs, a weakening yen, and global supply chain disruptions. These inflationary trends threatened the BOJ's long-term price stability target.

#### How the Yen currency appreciation affect carry trade

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The "yen carry trade" refers to an investment strategy where investors borrow yen at low interest rates and invest in higher-yielding foreign assets. Japan’s historically low interest rates made the yen attractive for this strategy, as borrowing in yen was cheap. Investors would use the borrowed funds to buy assets in countries with higher interest rates, pocketing the difference in yield.

#### The formula of buble

Recent news

An **asset bubble** doesn't have a single, universally accepted formula, but it can be understood through a combination of economic models and indicators that show when asset prices deviate significantly from their intrinsic or fundamental values. Typically, asset bubbles occur when the prices of financial assets, such as stocks, real estate, or commodities, rise rapidly and unsustainably due to speculative demand, often detached from the underlying economic fundamentals.

#### Do you know that every 1 dollar spending will affect the output by 5 dollar

Recent news

In the **IS curve** equation, the term $$\frac{1}{1 - c}$$ plays a crucial role in determining how changes in **government spending (G)**, **taxes (T)**, and other components of aggregate demand affect the overall **output (Y)**.

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