Coder Lee Yongho Chapter 45

JULY 5, 2016 CHAMBER 9 COMMENTS

“The Pearson correlation coefficient is a general formula to calculate the relation between two variables. The formula you’re seeing now is that”

However, YongHo, who was learning, understood it differently.

Illegible.

It was no wonder. The things Son SeokHo was explaining were contents you would learn in statistics.

YongHo first nodded his head as if he understood.

You don’t understand? Then do it until you understand.

“Really? You understood? What did I just say?”

He spoke a few lines and eventually stopped. YongHo’s voice didn’t have any confidence. He even felt sorry towards Son SeokHo who was teaching him passionately.

“But… Are there lots more of things like these?”

And algorithms were composed of mathematical formulae.

One day was restricted to 24 hours so he could only reduce his sleeping time.

Son SeokHo looked at YongHo delightedly like an excited little kid.

However, he couldn’t ignore the reactions given out by his body.
Sleeping so little everyday made his eyelids heavy.

Big scoop.

Below the title of big scoop was a huge printed photo of YongHo dozing off.

After he looked at the picture, YongHo was scared out of his wits and looked towards Son SeokHo.

Son SeokHo made an evil smile while looking at such YongHo.

Gulp.

Even last night, he left work late and due to learning all the algorithms taught by Son SeokHo, he only slept about 3 hours before coming to work.

“O, of course.”

The delight of having his ability increase and the efforts he put in to meet up his expectations – all these were about to be crumbled in front of fatigue.

YongHo thought that he would receive another sweet bean bread.

However, this looked different from the outside.

“Put it in your drawer before other people come to work and take them from time to time.”

YongHo couldn’t accept it easily.

“Th, thank you.”

All other things were unnecessary. Just saying one line: ‘you’ve worked hard’ was enough.
The block of lead which was holding him down disappeared in no time.

The time to learn about the algorithms used in maut was over.

After the algorithm learning was over, explanations for installingmaut and explanations about the provided API ensued.

Maut was not over by just downloading the program.

The bugs that occurred while installing were bonuses.

The results appeared on the console window of eclipse.

RMSE Score : 0.9014 (+5%)

It was the efficiency score for the current library.

The recommendation system was better if the score was lower.

Son SeokHo murmured while looking at the results on the monitor.

“10%, that means……”

“Will I be able to do it?”

Countless people with doctorates may not be able to accomplish this.

It was May.

Asking whether this was doable in 4 months was understandable.

YongHo looked at Son SeokHo’s face.

‘We can do it.’
Inside YongHo’s head, too, such belief was starting to take root.

The business firm to implement Shinseki’s recommendation system, i.e. PS system was decided.

It was a company that YongHo knew well.

The talks which were under wraps became official.

It was evaluated by calculating how many of the customers bought the recommended item recommended by each system.

The smart shopping strategy team was in chaos as if they were struck by lightning.

Unlike when YongHo entered the company, the team’s atmosphere changed drastically.

Especially, rumors that this team would disband if this was unsuccessful.

Their performance evaluation would plummet and the members would be re-located to different teams.

There were allies who worked together with blood and sweat so no team leader would welcome a person from another team.

Even in this atmosphere, YongHo and Son SeokHo put all their efforts into the NetFlax Prize.

They didn’t show it explicitly due to Son SeokHo being around, but their positive attitudes were gradually changing.

In the office, it wasn’t that everybody worked on their task.

When he just entered the company, the office employees weren’t so picky.

But it wasn’t like that now.

“It would be great if you could refill the water”

It had respect towards YongHo.

“Did you order that equipment?”

The tight development schedule, and the sense of crisis due to the danger of disbanding were ruining the team’s atmosphere.
At the center of it all was Heo JiHoon.

The PM for implementing the PS system to go against Mirae IT was Heo JiHoon.

“Is the development done?”

“What are we supposed to do if the synchronization module isn’t finished yet!”

“Can’t you see that there? There is a mountain load of things to do in the recommendation engine, from developing the final API to the testing.”

Agile software development.

It progressed with developing the program first and fix the things later as the problems occurred.

“…I will finish it even if I have to stay up all night.”

“Prepare yourself if it isn’t done by tomorrow morning.”

The latest software development methodology was introduced but the actual development process didn’t change at all.

No latest development methodology could shorten a development time which needed at least 1 year into 4 months.

Such was the reality of Korean developers.

Chapter end