# Hsin-Po's Website

Postdoc @ UC Berkeley

# Vaseman

↑ Jau-Pao Wang, February 2019, pen on paper.
↑ Hello, I am Hsin-Po Wang. Checkout this page for the pronunciation of my name.

↑ Jau-Pao Wang, February 2019, pen on paper.
↑ Artist illustration of Log-logarithmic Time Pruned Polar Coding. The main idea of this paper involves pruning the tree of synthetic channels using a new criterion. This makes it possible to prove that the average depth of the pruned tree is logarithmic in the maximum depth, which leads to log-logarithmic complexity.

↑ Jau-Pao Wang, March 2019, pen on paper.
↑ I am finding my glasses, which hang on my forehead. This is used in the 404 page of this website. Try enter a meaningless url, such as xj04a83, to trigger the 404 page.

↑ Jau-Pao Wang, December 2020, pen on paper.
↑ Artist illustration of Polar Codes’ Simplicity, Random Codes’ Durability. The main contribution of this work is to prove that the pair of exponents, one measuring the error probability and the other measuring the code rate, achieves the triangle supported by (0,0) and (1,0) and (0,1/2). It is particularly hard to approach (0,1/2).

↑ Jau-Pao Wang, December 2020, pen on paper.
↑ Artist illustration of Multilinear Algebra for Distributed Storage. In this work, I construct a regeneration code named moulin code. This name is inspired by the cascade code that pioneers this work. The word “cascade” refers to the nested nature of the code, but also means a type of waterfalls. I found the word “moulin” means a waterfall within a glacier, which drops a reference to Amazon S3 Glacier, a long-term storage service. Later when I proposed this name to Iwan my advisor, his first reaction was asking why windmill, the meaning of moulin in French? Did I mention that “moulin” sounds like an abbreviation of “multilinear”?

↑ Jau-Pao Wang, April 2021, pen on paper.
↑ My family jump synchronously on a grass field. From left to right: wife, myself, father, mother, sister. We go on field trips a lot when we are all gathered in Taipei.

↑ Jau-Pao Wang, April 2021, pen on paper.
↑ We wish you a happy new year. From left to right: sister, father, mother, myself, and wife.

↑ Jau-Pao Wang, December 2020, pen on paper.
↑ Let us celebrate the completion of an oriclip, that is, a binder clip sculpture.

↑ Jau-Pao Wang, June 2021, pen on paper.
↑ Artist illustration of Parity-Checked Strassen Algorithm. This work defines a code that allows nine CPUs to compute a matrix-matrix multiplication collaboratively. The collaboration is such that the failure of one CPU does not delay the final result. This is named Pluto code because there were once nine planets, until someday Pluto was reclassified as a dwarf planet. I also include in this work a construction called Charon code, which is after the moon of Pluto.

↑ Jau-Pao Wang, August 2021, pen on paper.
↑ I receive a PhD degree in Mathematics from University of Illinois Urbana-Champaign. My dissertation is titled Complexity and Second Moment of the Mathematical Theory of Communication, which discusses capacity-achieving error-correcting codes and their complexities. Due to the pandemic, my family cannot attend the commencement; so it’s only me. (Also the artist was busy.)

↑ Jau-Pao Wang, August 2021, pen on paper.
↑ Artist illustration of Multilinear Algebra for Minimum Storage Regenerating Codes: A Generalization of the Product-Matrix Construction. The code defined in this work is called Atrahasis code. This name comes from Atra-Hasis which, according to wikipeida, is a 18th-century BCE Akkadian epic, recorded in various versions on clay tab The tablets. Several reasons are behind this choice: 1. The epic involves surviving a flood, which is analogous to data surviving hard-disk failures. 2. The clay tablets that hold the epic last thousands of years. 3. Clay code is another MSR code.

↑ Jau-Pao Wang, June 2022, pen on paper.
↑ In September, 2021, I moved to San Diego, California for the new job.

↑ Jau-Pao Wang, June 2022, pen on paper.
↑ Artist illustration of PCR, Tropical Arithmetic, and Group Testing, part 1 of 5.

↑ Jau-Pao Wang, June 2022, pen on paper.
↑ Artist illustration of PCR, Tropical Arithmetic, and Group Testing, part 2 of 5.

↑ Jau-Pao Wang, June 2022, pen on paper.
↑ Artist illustration of PCR, Tropical Arithmetic, and Group Testing, part 3 of 5.

↑ Jau-Pao Wang, June 2022, pen on paper.
↑ Artist illustration of PCR, Tropical Arithmetic, and Group Testing, part 4 of 5.

↑ Jau-Pao Wang, June 2022, pen on paper.
↑ Artist illustration of PCR, Tropical Arithmetic, and Group Testing, part 5 of 5. This series of images were used in the slides for ISIT 2022.