Viewing profile — mkaufmann

Hyper, which was created by the same group, can now be used for free with the Tableau Hyper API https://help.tableau.com/current/api/hyper_api/en-us/index.h... I especially like th…

I've been following data Artisans for a while and love their tech! It seemed that being not from silicon valley made it more difficult for them to gain traction. One part of the ac…

Damn these numbers! :D Regarding your correction. The percent value is now too low (.002%). I think you used the factor value of ~0.002 as percentage. So you probably meant 0.2% wh…

I think you are mixing the number up. I could not find a source that said anything close to the 1.7 million metric tons per day emitted by the leaking well you used for your calcul…

I corrected my calculation (using the correct 25 factor for metric tons). Thanks for the hint!

I corrected the analysis, thanks for the clue, this paints a completely different picture. I corrected the analysis

On the topic of what went wrong I think this LA weekly[3] article is a much better source. The main problem why the well can't be shut down is that the security valve was removed a…

It does not really compare, I guess thats also why its not mentioned. The whole premise of the paper is that data can be analyzed in situ. That means loading from its original plac…

The article lacks a description of which specific form of pollution is compared. When talking about pollutants is important to keeps the following points in mind: - Is the pollutan…

For x264 that is true, HEVC which is also mentioned is much slower. For a 4k source transcoding can take more than a second per frame. For a normal movie this can quickly result in…

I just did this page. The page is indexed. When I look for the search term "Update this was posted to Google on Friday the 17th of July, 2015. Monday, the 20th" the page is shown. …

I like to use -Wpedantic for my own projects to keep the code clean and it helped my well. Its not included in -Wall and -Wextra.

I would be interested why the go implementation is so much slower than the Java implementation. The algorithms behind both implementations seem to be exactly the same and both are …

Yes because the recovery menu won't be accessible than (which is needed to replace the sticky key executable) The settings can be changed with bcdedit: bcdedit /set {default} recov…

Driving on a german highway with autonomous cars has already been done as already as 1996 by Mercedes[1]. But same as with the google cars they used very special hardware which wou…

The changes make all the difference. Your argument was that columnization and thus storing each native type in a data record in seperate columns brings a performance benefit. By re…

Addressing your points: 1. In my comment I acknowledge that there are space savings with types that include padding. I don't understand why you imply in your answer that I didn't u…

While I like the construction of the column store and the corresponding API. The claims of the author don't really make sense: > "... columnarization, a technique from the database…

Just for fun I tried to estimate the performance characteristics of this service. My initial assumption is that the 2.2M pages per ~18h are the main workload. This is also supporte…

Concerning your critique of the in your opinion overly hard scientific review process. According to her blog the paper was rejected because: "Reviewers at conferences [...] have be…

Impressive acceleration time! The new record for accelerating from 0-100 km/h of only 1.785 seconds was just set a few days ago[1]. The car required less than 30 meters to accelera…

On a related note there is a recently published paper exploring how to load CSV data into a database efficiently[1]. The authors get a loading throughput (including index creation!…