Sat, Oct 20, 2018
大家好，今天我要写一下更多相似的中文话。我的上次的blog post是英文写的 Similar Mandarin Words。下面是更同类的单词我遇到了在学中文。
“去” 和 “走” 都可以用去某处。“走”的意思是physically walk somewhere。去是more general。
“方才” 和 “刚才” 在词典方才和刚才都有同的意思。但是没有人说方才。人人用刚才。
“很有意思” 和 “很有趣” 都是同的意思。很有意思还有可能用sarcastically。
“见到”，“看到”, 或者 “看”，那个用？ 看只是to see的意思。见到是看某人的意思。看到的意思是to notice。 也可以是看某人的意思但是
Sun, Oct 14, 2018
Thu, Sep 27, 2018
No car exhaust fumes. Works out different parts of your legs and core that wouldn’t otherwise be exercised on asphalt. See wildlife. Visit places and see sights where roads don’t go. Races are more intimate and less anonymous. You make friends. Strangers encourage you along the trail. You encourage strangers.
Tue, Sep 25, 2018
Imagine you’re an interviewer in a software engineering interview. The interviewee writes a method and it’s completely wrong. They go on to implement other parts of the problem, then later realize there’s a bug and come back and fix the original method.
One thing that isn’t super clear for both interview candidates and interviewers is how to treat mistakes like this. The candidate definitely made a mistake. But their final implementation is correct.
Sat, Jun 23, 2018
After building a system with TensorFlow in Autumn 2017 and taking a course on Cryptography in Winter 2018, I saw some interesting parallels. TensorFlow is Machine Learning framework but under the hood it’s a general platform for doing computations in the structure of a graph. Cryptographic algorithms are frequently structured as the manipulation of vectors or matrices in the structure of a graph. I put together a Python notebook to explore this interesting relationship.
Sat, Jun 23, 2018
This year I’m trying to start learning Mandarin Chinese. Here are some confusingly similar words I’ve come across.
认识 and 知道 The difference is between knowing a person, 认识 (rènshí) and knowing a fact, 知道 (zhīdào).
你认识她妈? 你知道我很酷吗？ nǐ rènshí tā mā nǐ zhīdào wǒ hěn kù mā Do you know her? Do you know I'm cool? 正在 and 现在 Both roughly mean “now” but 正在 (zhèngzài) means currently or in general and 现在 (xiànzài) means literally right at this moment.
Sun, Jun 3, 2018
Yesterday I ran Inside Trail’s China Camp Trail Run, my first trail half. The course was good! The temperature was in the 80s but the course offered lots of shade. It was mostly single track trails with a few friendly mountain biker sightings. 1.5 miles into the race there was a nice steep 500ft climb.
As a beginner trail runner I want to share with you a few tips that I wish I had heard before the race.
Mon, Apr 16, 2018
A shorter version of this post was initially published on April 1, 2018. This is an expanded and rewritten version.
A hash function is a function (in both the math and programming sense) that is “one way” – meaning given the output $y$, it’s near impossible to find the input $x$.
$$H(x) \rightarrow y$$
Hash functions are extremely versatile and are found in all parts of software engineering.
They’re how a a Bitcoin miner tries to guess the next block in a blockchain.
Sat, Mar 31, 2018
This Winter quarter I took Stanford CS255: Introduction to Cryptography. It was a super challenging and enriching course and I learned a ton about the mathematics and algorithms behind the cryptography we depend on every day. Here are some memorable high-level takeaways from the course.
1. Don’t implement crypto yourself Cryptography primitives like AES are extremely powerful and extremely difficult to do correctly. Use a high-level API to ensure you’re doing things right.
Fri, Mar 30, 2018
I updated the design of my blog and moved it from jeff.is to www.jeffcarp.com. The site jeff.is is still available, but I’ll be moving over content shortly and setting up a redirect.
Fri, Jan 5, 2018
In TensorFlow if you’re using a tf.estimator model, for instance tf.estimator.DNNLinearCombinedClassifier, and as part of your automated training infrastructure you want to save the evaluation results as a JSON file, it’s not super straightforward, so here’s how to do it.
Let’s say you define your EvalSpec like this:
eval_spec = tf.estimator.EvalSpec(eval_input_fn, steps=hparams.eval_steps, exporters=[exporter], name='eval') You’ll need to write a new exporter class that will take the eval_result from your evaluation step and save it to a file using the GFile API.
Sun, Nov 19, 2017
I wrote a quick how-to on Kaggle demonstrating how to save and load a model in TensorFlow.
Sun, Oct 22, 2017
While in Tokyo for BlinkOn8, a gathering for Blink and Chromium contributors, I gave a talk at a coding school about the security architecture of Chromium. Here are the slides.
I’m far from an authority when it comes to security or specifically security in Chrome, but I’m really interested in it and I hope this deck has some information you find interesting as well.
Sun, Nov 29, 2015
I’ve always been interested in running and looked up to friends who’ve trained for marathons or go running all the time. Running is great because it’s really easy to fit into a busy schedule and it leads me to explore new parts of my city (or better yet, a city I’m visiting).
Throughout my life, however, I haven’t been able to run much due to an ongoing series of injuries. In Middle School I absconded from the swim team for a semester to join the track team, but I didn’t end up running much due to excessive heel pain (maybe I was growing too fast).
Sun, Jun 15, 2014
As someone who had never pair programmed before, it was exciting to get thrown into the deep end during my first week at Braintree where engineers pair nearly 100% of the time.
The relative merits of pair programming have already been spoken about at length. This post is not an attempt to argue one way or another. Whether it works for any organization is probably too context-dependent for any axioms I could lay down.