## ISR Events Calendar

 Event Information CCSP Seminar: Alexander Barg, "Optimal locally private estimation under $\ell_p$ loss for $1 \leq p" Thursday, February 28, 2019 5:00 p.m.-6:30 p.m. 2168 A.V. Williams Bldg. For More Information: Ajaykrishnan Nageswaran 301 405 3661 Communication, Control and Signal Processing Seminar Optimal locally private estimation under$\ell_p$loss for$1 \leq p \leq 2$Professor Alexander BargElectrical and Computer Engineering and the Institute for Systems Research AbstractWe consider the minimax estimation problem of a discrete distribution with support size$k$under locally differential privacy constraints. A privatization scheme is applied to each raw sample independently, and we need to estimate the distribution of the raw samples from the privatized samples. A positive number$\epsilon$measures the privacy level of a privatization scheme. Recently, we proposed a family of new privatization schemes and the corresponding estimator. We also proved that our scheme and estimator are order optimal in the regime$e^{\epsilon} \ll k$under both$\ell_2^2$(mean square) and$\ell_1$loss. In this talk, we sharpen this result by showing asymptotic optimality of the proposed scheme under the$\ell_p$loss for all$1 \leq p \leq 2$. More precisely, we show that for any$p \in [1,2]$and any$k$and$\epsilon$, the ratio between the worst-case$\ell_p$estimation loss of our scheme and the optimal value approaches$1$as the number of samples tends to infinity. The lower bound on the minimax risk of private estimation that we establish as a part of the proof is valid for any loss function$\ell_p, p \geq 1\$. Joint work with Min Ye (Princeton). This Event is For: Graduate • Undergraduate • Faculty • Post-Docs
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News linksProteus is the sixth piece of interactive fiction I’ve played.
Interactive fiction can be thought of as on two dimensions, the extent to which the game focuses on the “player” (who he is, why he is there, and so on) and the extent to which the game focuses on the environment (the emotions it evokes, the thoughts it provokes, and so on).
Like The Stanley Parable, Proteus focuses exclusively on the environment. But while The Stanley Parable is cognitive, subverting the expectations of players, Proteus is emotive, building up a perfect child-like world with no rules, no enemies, and no protagonists — only delight.
Most reviewers of Proteus, whether their impressions are positive and negative, play Proteus for less than an hour. Whimsy without people or danger may be a hollow emotion indeed.
I played Proteus in Steam Edition on my Surface Pro.
“Depression Quest” is a hypertext-based depression simulator. Unlike the interaction fiction I recently reviewed, there’s no graphics engine: the “game” is a series of pages with a sound-track.
But it’s quite moving. The game shares themes with both Dear Esther and Gone Home, but by firmly placing the events in the real world the themes of sadness and loss are reinforced by an alarming veracity.
“Depression Quest” is free, but you can pay what you want, and any funds go to a mental health charity.
I had the three best days of computer gaming in my life.
I used Steam (an app store, mostly used for Windows games) for the first time when it was required to use Half Life 2. My experience was so bad I’ve not touched it again for a decade.
But in ten years, a lot have changed.
Steam is now an awesome app store for computer games of all sorts, including interactive fiction. Unlike game which focus on fighting, shooting, or twitching, Modern interactive fiction focuses on telling a story thru the interface of a computer game.
Each of these “games” took between 2 to 5 to play. All were haunting.
â€œWho are you, Lord?â€ Saul asked.
After finishing Dear Esther I felt much older, and much sadder. The feeling stayed with me for some time.
The game has a beautiful soundtrack, that you can listen to for free on Spotifiy.
Fortunately, Stanley Parable also has an amazing and free demo, which teases the meaning of the game without giving it away. You can play the free Stanley Parable Demo on Steam.
If I had not played The Stanley Parable and Dear Esther the day before and after I played Gone Home, Home would be one of the top games I’ve played in years. As it is Home is a fine game, and the story stays with you.
You begin Gone Home on your parents front porch after a trip abroad. A note from your sister tells you that she has left, and not to follow her. The dor is locked, and no one is home. While walking through the house you gradually discover what has happened — both in the last year and the last decades — with the artifacts left behind by the overlapping stories of your father, mother, and sister.
As the pieces fit together, Gone Home takes on an increasingly strident tone, and you’re left with a very clear impression of which politicians and issues the authors support, and which they despise. The focus on issues that matter a great deal to many now — and will be largely irrelevant to those in the future — limits the appeal of Gone Home both to those who are around now (effectively excluding those of different voices) and in the future (who simply won’t care).
Interactive fiction is a beautiful, moving, and even controversial form of art.
The first video game was made in 1947. That means video games are 66 years old. By comparison, the first moving pictures were shot in 1841. 66 years later was 1907.
We are in the 1900s of video games.
The future is going to be incredible.
Nebraska Wins Again!
To celebrate, why not check out the thoroughly unrelated, but still interesting, “Revolution in Time and Space” series by Seahawk Wang-Radojcic.
The Chain! The Chain!
David Rhodes |||EMAIL_ADDRESS||| is a friend-of-land-standing. He occasionally reviews books for this blog as party of Trumpy Productions under the pen-name of “Biz.” For years he has made chainmail fashion accessories as an artisan, and he has now launched his website, Chainmaille Oddities, to help him expand his reach.
From his studio, Biz crafts bracelets, necklaces, anklets, and other accessories — including custom work,.
I have not purchased chainmail before, so I am not qualified to offer technical opinions. But I have known Biz for years, and I loudly proclaim Biz’s honesty, work ethnic, and originality. I wish him the best of luck.
Congratulations on the launch of Chainmaille Oddities!
SHANGHAI (Reuters) - Tesla Inc plans to start work on a new plant in Shanghai as soon as next month as part of a plan to more than double production capacity in China to meet growing demand for its cars in the country and export markets, two people familiar with the matter told Reuters.
Once the new plant is fully operational, Tesla will have the capacity to produce up to 2 million cars per year at its expanded Shanghai facility, the company's main export hub, according to the people, who asked not to be identified in discussing still-private plans.
The new plant will be located in the vicinity of its existing production base in Lingang, Pudong New Area.
The expansion, if it goes ahead, would give Tesla EV-dedicated production capacity in the world's largest auto market on a par with more established brands in China.
In comparison, Toyota Motor Corp produced 1.6 million vehicles in China in 2021. General Motors produced 1.4 million with its major Chinese partner SAIC Motor Corp. Volkswagen plans to have capacity to make 1 million EVs in China by 2023.
The cost of the planned expansion and Tesla's timetable for completion were not immediately known.
Tesla started production at its Shanghai plant - also known as the Gigafactory 3 - less than a year after breaking ground. The plant makes the Tesla Model 3 sedan and the Model Y crossover.
Expansion plans for the existing plant aim to put Tesla on track to produce around 1 million vehicles this year, two sources familiar with the expansion plans told Reuters, though one said this also depended on the availability of parts.
Tesla has projected to take its weekly production to about 22,000 vehicles at the plant in the coming months, one of the sources said.
That production rate would amount to about 1.1 million vehicles over a year, more than double the plant's original projected capacity.
Reuters previously reported that Tesla could expand its capacity on the existing site.
The Shanghai city government did not immediately respond to a request for comment.
Shanghai has been a supporter of Tesla's establishment of a wholly-owned factory in China - the first foreign auto plant not required to form a joint venture with a Chinese partner.
In a regulatory