I’m using the Python Package Manager (PyPi) since a very long time and I couldn’t help but notice that package signing feature isn’t there at all (According to this reddit thread, it used to be there many years ago but they removed it sometime back for some unknown reasons). That means, if I install some package by running , there is no way for me to ensure whether its the same one uploaded by the author of that package. So the user who installs my package has no way of knowing that it was me who uploaded it there.

The variables of the model were all pretty straightforward – indicators for variables, some customer history variables and some other stuff to handle the frequency of their interactions with the company. The reason this model seemed like it was ok was because customers with that particular product were indeed churning en masse, such that it masked performance flaws elsewhere in the sample space. In the case I described above, what had happened was that the model was trained on a dataset that contained no examples of a customer having that one product and also not churning.

Whether a child finishes first or last will no longer be indicated in primary and secondary school report books from next year in Singapore, – a move which Education Minister Ong Ye Kung hopes will show students that “learning is not a competition”. The information to be dropped includes:

The Ministry of Education (MOE) said on Friday (Sept 28) that the change is to allow each student to focus on his or her learning progress and discourage them from being overly concerned about comparisons. For older students in primary schools and secondary schools, marks for each subject will be rounded off and presented as a whole number, without decimal points – to reduce the focus on academic scores.

SAN FRANCISCO — The Chinese government this week summoned major tech companies from the United States and elsewhere to warn that they could face dire consequences if they cooperate with the Trump administration’s ban on sales of key American technology to Chinese companies, according to people familiar with the meetings. That list was widely seen as a way of hitting back at the Trump administration for its decision to cut off Huawei, the Chinese electronics giant, from sales of American technology. The companies summoned by Chinese officials included a number of the world’s most important semiconductor firms, as well as other tech giants.

It’s easy to make mistakes by developing for just a few chosen friends and beta users. But now we were suddenly facing constant usage from many different kinds of websites and users. For example, some of the users were generating more than 5000 different market segments in just a few days.

The final outcome more than doubles the amount that Andrade appeared able to pay in March, when he bid a total of $1,060,000 for three of the parcels, and failed to outbid Rapozo’s offer of $700,000 for the fourth. The dispute between Andrade, Rapozo and Zuckerberg has its roots in Hawaii’s complicated history of land ownership. Following intense local and international backlash to the suits, which were viewed by many Hawaiians as consistent with a long history of colonialism and dispossession, Zuckerberg dropped the lawsuits but said he would support Andrade’s continuing efforts to gain control over the four Rapozo family parcels.

has some maps that hold the 1D, 2D and 3D FFT plans, indexed by tuples containing information about ‘in place’ computation, alignment, if it’s a direct or inverse transform, if it’s between different types and the size of data transformed. By the way, since this post also handles a 2D problem and in the future 3D problems will be approached, solving a multi-dimensional Fourier transform is easy once you have the 1D transform. FFTW already has 2D and 3D transforms implemented, but for example for this project all I would have to do is to Fourier transform each row of the raw matrix then each column after that (or first the columns, then the rows), if only the 1D Fourier transform would be available.

The most common reformulation of the ‘Butterfly effect’ is: ‘small actions can have a big impact’. Whether any particular snowflake is the last to fall or somebody clapped loudly near a snow drift just before the avalanche fell says nothing about the ability of small things to have big effects. The ‘butterfly effect’ is a good metaphor for the sensitivity to initial conditions aspect of it.

The most common reformulation of the ‘Butterfly effect’ is: ‘small actions can have a big impact’. Whether any particular snowflake is the last to fall or somebody clapped loudly near a snow drift just before the avalanche fell says nothing about the ability of small things to have big effects. The ‘butterfly effect’ is a good metaphor for the sensitivity to initial conditions aspect of it.

The highway removal and park creation were part of a series of changes that widened sidewalks at the expense of car lanes, turned a huge traffic circle into a circular green park, instituted a public bicycle system, reorganized bus lines, and improved and expanded an already excellent subway system (including retrofitting lines with glass platform screening doors and linking it to buses with a unified payment system). Soon after Congress approved the Interstate Highway Act, people began opposing the part of it that prescribed highways through cities. The always astute Lewis Mumford, author of the prophetic 1958 article “The Highway and the City”, called the inner city highways something that would create “a tomb of concrete roads and ramps covering the dead corpse of the city.”