Tchaikovsky wrote music for Eugene Onegin opera. But the Onegin ballet’s music is adapted from various other Tchaikovsky pieces (Breakdown of Eugene Onegin’s Different Versions) One of the ballet’s highlight, the Tatiana solo in Act II. It is melodic, expressive, and perhaps the most heartbreakingly vulnerable part of the whole story. When Tatiana fall in love with Onegin, at Tatiana’s birthday Onegin danced and flirt with Tatiana’s sister and leaves Tatiana hurt in the crowd:...

This archive Blog Posts About Classical Music Collection started as a way just to keep track of blogs — but it has slowly become a personal map of musical obsessions and opinions. It kinda traces how I’ve moved through time in my life. Technically, I should have relied on tags instead of manually collecting every post, but revisiting my six‑month music library while copy‑and‑pasting turned out to be surprisingly enjoyable. Seems like, I’ve been obsessed with Tchaikovsky and Chopin lately, and that passion naturally spilled over into other Romantic-era composers—hence the flood of piano and ballet works....

My hometown has a genuinely strong orchestra — the Guangzhou Symphony Orchestra. It doesn’t have an all-star woodwind section like the Berliner Philharmonic, but having played in its affiliated Youth Orchestra during high school, I know the musicians are well-trained professionals. Plus, our artistic directors and conductor are not only well-connected but are themselves part of the core of China’s elite classical music scene. Oh, and fun fact: Guangzhou Symphony Orchestra often don’t give encores....

Tmux is powerful for parallelization but can be frustrating for monitoring experiments at scales. Like, you can run multiple parallel projects in different sessions but it’s hard to monitor each session — because you will have to manually ‘attach’ to a session to see outputs, and tmux has limited scrollback history and clunky scrolling interaction (you’ll have to Ctrl-v [ into copy mode to scroll). And once a tmux session dies — all terminal outputs are lost....

Came across a paper that proposed an interesting mechanism to improve rating systems. This is a very very good idea. RewardRating: A Mechanism Design Approach to Improve Rating Systems Vakilinia, Faizian, Khalili. Games (2022) https://doi.org/10.3390/g13040052 “To improve rating systems, in this paper, we take a novel mechanism-design approach to increase the cost of fake ratings while providing incentives for honest ratings.” … “Our proposed mechanism RewardRating is inspired by the stock market model in which users can invest in their ratings for services and receive a reward on the basis of future ratings....

I was surprised to discover a lovely — and fairly well-loved — harp-flute duet that had somehow escaped my notice: The Fog is Lifting, Op. 41, by Carl Nielsen. It’s always a joy to stumble across a hidden gem in the repertoire. This piece isn’t about flashy technique or dense chromatic harmonies. What it does offer is space — space for the performers to shape tone, color, and atmosphere. It’s all about timbre....

Our Beyond-Bayesian-Bandits reading group covered this paper today: Multitasking: Efficient Optimal Planning for Bandit Superprocesses Dylan Hadfield-Menell and Stuart Russell. [Link](https://people.csail.mit.edu/dhm/files/bsp_bbvi.pdf to paper) and its supplementary materials. A bandit superprocess is a decision problem composed from multiple independent Markov decision processes (MDPs), coupled only by the constraint that, at each time step, the agent may act in only one of the MDPs. Multitasking problems of this kind are ubiquitous in the real world, yet very little is known about them from a computational viewpoint, beyond the observation that optimal policies for the superprocess may prescribe actions that would be suboptimal for an MDP considered in isolation....

I was — and still am — a huge Sherlock Holmes fan. I first got into it around age 10, thanks to a Chinese edition I found during a summer holiday at my grandparents’ house. I barely remember the plots now, but the heat, the watermelon, and those long, lazy afternoons spent binging the stories without a single worry in the world were so memorable. There’s something about Holmes that makes him perfect summer reading....

Incoherence is sufficient for exact matrix completion under random sampling. Coherent matrix can also be accurately recovered if random sampling can be contingent on each entry’s local coherence.

Why matrix completion is equivalent to minimizing the recovered matrix’s spectral norm.