## Wasabi desu! (bye friends!)

Which topic/s in class made an impact to you? Why?
The topic about differential equations made me more aware that math is everywhere! Also, I had to really learn the topic so that we can teach it in our video haha. Solving differential equations may be a long process but it’s actually cool when I get an answer after integrating and deriving multiple times. Even though the topic is hard, I learned to appreciate it more when we did the final project.

If you can summarize this course in one word or sentence, what would it be?
Awzum

What would be your parting message to the class?
Thanks for the sem guys! Our final project is done woo! Congrats to all!! ❤

• #### Abby del Castillo 3:14 pm on May 4, 2017 Permalink | Reply Tags: Transform ( 53 )

Fourier Transform in Song Classification

Shazam, a music recognition application, does several steps before being able to identify the title of the song a user has asked the program to recognize. It has to analyze the wave forms of the song and one of the methods they use for doing so is Fourier Transform. The following exerpt is an explanation on how it was actually used for the analysis,”The DFT is a mathematical methodology for performing Fourier analysis on a discrete (sampled) signal. It converts a finite list of equally spaced samples of a function into the list of coefficients of a finite combination of complex sinusoids, ordered by their frequencies, by considering if those sinusoids had been sampled at the same rate.”(Jovanovic, 2015). The analysis doesn’t end here but with the FFT analysis, a big part of the work has been done.

## Symmetry in Architecture

Many buildings and houses can be observed to have some form of symmetry. They are done this way to create balance and also emphasis on the design. There are different kinds of symmetry in architecture like bilateral and radial symmetry. I actually like to look at some buildings and just appreciate them. There is some kind of relaxing and satisfying feeling whenever I stare at these structures. These are definitely modern works of art you can observe everyday. 🙂
Reference: http://vertical-arts.com/the-art-of-symmetry-in-architecture/

## Vectors in Pathfinding

Goal based vector field pathfinding is used as an alternative solution aside from Dijkstra’s and other pathfinding algorithms. The vector field is used to see the direction of the goal from the current position. This is just one component of the algorithm since it also uses heatmaps and particles which looks for the shortest path. Without the use of vector fields, this alternative solution wouldn’t be possible.

## Hello World! I'm Abby!

I’m Abigail del Castillo but you can call me Abby. 🙂

What were your thoughts when you enrolled in this course?
I thought I’m done with math after the math series but I was wrong! When I enrolled in this course, I knew that I’m going to deal with a lot of math stuff again.

How comfortable are you with math?
I like math but I find it difficult. I enjoyed it when I was in high school but Math 50 series gave me a hard time finding it enjoyable. Browsing through modules and samplexes felt like I was reading some kind of alien language. It’s not easy solving math problems but it’s rewarding when I finally understand and solve them.

What’s your dominant feeling right now?
I’m excited to learn more about the applications of this course in CS especially after watching the TEDx video.

• #### Paul Rossener 11:45 am on January 22, 2017 Permalink | Reply

Margot Gerritsen’s talk was really something. I’m glad it had a similar effect on you, Abby.

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