Decoding Google’s Software Development Methods: The Cpm Scheduling Debate

Decoding Google’s Software Development Methods: The Cpm Scheduling Debate – TL; dr: Data visualization for complex systems is a two-dimensional coding system. Thus, data visualization readers must go through specific decoding processes to understand and interpret the underlying data and systems. To properly manage data visualization, we as designers, developers or data scientists need to understand the decoding process.

Many of the complex systems we face today, such as production processes or customer life cycles, are invisible. Only by directly collecting and analyzing data can we understand the system so that we can identify and solve problems.

Decoding Google’s Software Development Methods: The Cpm Scheduling Debate

Decoding Google's Software Development Methods: The Cpm Scheduling Debate

Information graphics can be a friendly way to understand and access this information. They also need to use technology to read and interpret data.

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Visualization of data is the final result of a long and complex process, where many obstacles must be overcome: integration of data from different sources, cleaning, flexibility of use and sometimes, statistical calculations. Then we excitedly watch the colorful and exciting show and think, ‘Yes! For the first time, our data is visible! “We’ve done the hard work and presented the user information on a silver platter. The user is now comfortable and nothing can go wrong, right?

However, the journey is not over. Informational images can be misunderstood or not understood at all. If you’ve seen it before, either as a reader or a video creator, then you should read on.

From my perspective, a lot can go wrong. For more than ten years I have developed web users for information products and I have had the painful experience that my visualizations sometimes miss the mark. Users do not understand the visual language, cannot understand the nature of the information, or cannot understand the meaning of the information presented. In some business intelligence operations, we found that video was rarely used afterwards. But why? How can you improve?

Let’s take a step-by-step look at the process of creating and reading video data, encoding and decoding cycles:

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Creating data visualization does not start with the data, as is often assumed, it starts much faster, with the background system. Behind every information in the world there is a system. It is usually invisible and very difficult.

Take the Internet for example. No one can handle just one stream of visitors. First, we need an idea; The main map of this page, to select the objects, objects and objects that we want to measure. There are many things that can be interesting, visitors, websites, shopping carts and products. But not everything we can measure technically, like the thinking of a website visitor when he decides to buy a product in his cart. It would be nice to know!

Knowing what and what we can and want to measure, we decided to choose the parts of the system that will be represented in our numbers. If our mind map is incomplete, inaccurate, or simply wrong, we cannot ask the right questions and measure the truth.

Decoding Google's Software Development Methods: The Cpm Scheduling Debate

While we have achieved the first step of information acquisition, we must realize that we cannot capture all the intricacies of the system. The data is not a complete representation of the system, it is a small representation.

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Next, we build a data model. Here, again, a lot is lost, because the information system cannot cover all aspects of the world. Anyone who has done it knows that full data modeling is a dangerous beast. That’s why we choose to keep it as simple as possible and leave out the unimportant information. So in the end, we get a nice and clean model that shows little information about the system. By changing the underlying information in our data structure, the data depth is reduced by a factor of two.

After collecting the data and storing it, we finally make our video. Also, the amount of available data stored in the data table must be filtered, because the table technique can only display a small number of items and attributes. But this is not the only reason why we should reduce the amount of data presented: Graphic design reflects human content. We need to focus on the message we want to convey, the needs of the audience and their specific abilities. So we have to select a small part of the available data for each table: Maybe one or two characteristics, such as the product and its number of sales per day.

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Up to this point, two things have happened that we need to take into account: first, not all the complications of the system are visible in the view, and second, we have hidden the system twice. First, it became information, and then, information turned into vision. That’s why we call this process video coding and processing.

No, that’s not all, because now comes the second part, the decryption process. Video decoder and player. To understand the system and understand the process, the decoder must step back from the visual representation of the data and move from the data to the logic. This can be difficult. The purpose of coding is to confirm, organize or change your thinking with the help of information.

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How can it? In the first step, the reader must enter the translation key. What is the meaning of line, point, place and color? What does the axis label mean? At the same time, he tries to understand the nature of the information. Are these articles timed by country or by product?

This technique, which is called graphics, cannot be closed. It must be achieved by practicing reading many types of graphs and understanding the principles of data structure. We must realize that many people are already failing at this point. The painting is shared in the community. That is why it is important to know the level of your audience.

If our user was able to interpret the basic information, he can move on to the next step: understanding what the information means.

Decoding Google's Software Development Methods: The Cpm Scheduling Debate

In step 5, the decoder must first get an idea of ​​the real-time data representation. What do they have? How are they related? Can it take shape? The science of statistics helps with this. Are these numbers exact or approximate? What is population? For example, what is the relationship between jeans, dress size, and order?

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However, understanding the whole data is not enough. Then he knew something happened, but it didn’t. This is often an uncomfortable situation. The decoder wants to learn about the inner workings of the system. Therefore, it should clarify the information. Explaining is essentially finding ‘why’. Why do we sell so many shirts? Why did we sell 17% more last Saturday than a normal Saturday?

Here is his domain knowledge, his mental map of the system. The missing format must be added again with two codes. Maybe he knows the reason for the 17% increase this Saturday: an advertising campaign? Product delivery changes on site?

We coders have shared and collected our knowledge of the world in an abstract and abstract way. To add more detail to this information, to find the reason, the decoder must go down to the download level, to the specification. We don’t think abstractly. We think in pictures, people, events, places, things and specific stories. We understand cause and effect in our world through stories.

So what a decoder does when it interprets data is it tries to match the pieces of data with what it already knows and its mental model of the system. His mental model is based on what he has seen and heard. A mental model can contain abstract information, and it often does. Once we understand the reason (the mechanical part of the system) we can extract the details, for example, a visit to a website and their intention to buy, along with the number of visitors and the manner of each week.

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“People think that the world has a causal nature – that events can be explained by the natural world, not by something evil.” – Steven Pinker, How the Mind Works

Adding meaning to the data is an invisible process that must be performed by the decoder. The more familiar the user is with the system, the easier it usually is. See the amazing episode

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