8 Matching Annotations
  1. Mar 2020
    1. I would like to make an appeal to core developers: all design decisions involving involuntary session creation MUST be made with a great caution. In case of a high-load project, avoiding to create a session for non-authenticated users is a vital strategy with a critical influence on application performance. It doesn't really make a big difference, whether you use a database backend, or Redis, or whatever else; eventually, your load would be high enough, and scaling further would not help anymore, so that either network access to the session backend or its “INSERT” performance would become a bottleneck. In my case, it's an application with 20-25 ms response time under a 20000-30000 RPM load. Having to create a session for an each session-less request would be critical enough to decide not to upgrade Django, or to fork and rewrite the corresponding components.
  2. Jul 2019
  3. Jun 2019
    1. However, this doesn’t mean that Min-Max scaling is not useful at all! A popular application is image processing, where pixel intensities have to be normalized to fit within a certain range (i.e., 0 to 255 for the RGB color range). Also, typical neural network algorithm require data that on a 0-1 scale.

      Use min-max scaling for image processing & neural networks.

  4. Mar 2019
    1. To solve the problem of ‘scaling up’ requires ‘scaling in’ –by this we mean developing the designs and infrastructure needed to support effective use of an innovation.

      On "scaling-in" rather than "scaling-up".

  5. Sep 2018
    1. As student numbers have increased, teaching has regressed for a variety of reasons to a greater focus on information transmission and less focus on questioning, exploration of ideas, presentation of alternative viewpoints, and the development of critical or original thinking. Yet these are the very skills needed by students in a knowledge-based society.

      Related to Vijay Kumar's iron triangle. You can't increase the number of students without sacrificing quality or increasing costs.

  6. Sep 2017
  7. Aug 2017
  8. Feb 2017