Live data from Hacker News

Viewing profile — cechner

cechner

HN member
Joined
Wed, Jan 04, 2012, 2:08 PM UTC
HN karma
48
Public activity
41 items

About cechner

Developer working in Tokyo

Recent public activity

  1. comment
    Comment #20292998

    actually, beta is less useful than that! I think it represents the median difference between the two distances, its not a tolerance (at least as far as I can recall after experimen…

  2. comment
    Comment #20292868

    it should be in seconds - the problem is that the paper assumes that the 'great circle' (straight line) distance between two points should be almost the same as the 'route' distanc…

  3. comment
    Comment #20292780

    yep - look up 'Hidden Markov Map Matching through Noise and Sparseness' by Krumm and Newson it calculates the final probability by combining 'emission' probabilities (the probabili…

  4. comment
    Comment #17797335

    do you have more modern benchmarks that cover the same ground?

  5. comment
    Comment #13740964

    what is the point of this headline, other than to decieve? it is not the headline of the article and is not a quote from the text in the article edit: I hope I'm not just being a k…

  6. comment
    Comment #12977923

    When I first used Parallels years ago I was pretty surprised how close to native it could run Windows (though not 3D graphics intensive apps, as far as I can recall.) I tried runni…

  7. comment
    Comment #12698092

    > Developers do need to pick a set of core technologies, and stick to it or a career can fall apart I bet I hope not for my sake :) Im currently contracting writing C++, but my pre…

  8. comment
    Comment #12471715

    holy moly, I have forgotten more than I realised :( embarrassing

  9. comment
    Comment #12470174

    nah thats mitsu (as in mitsubishi)

  10. comment
    Comment #12251557

    (I went to bed so didn't take long to reply before) I am clearly not expressing myself well. I am talking about a situation where some stakeholders are expecting a complete picture…

  11. comment
    Comment #12248923

    it is totally reasonable for stakeholders to want to track your progress through a project. If you have a good way of doing that then great, you should use that. Scrum people belie…

  12. comment
    Comment #12248680

    (replying here because I guess we've reached the maximum depth) I am here assuming that you want to be able to try to measure your progress through the project (as I mentioned, thi…

  13. comment
    Comment #12248425

    can we infer that he would like to give his estimates: * while he is actually writing the code (so not up front) * not in a group setting but as an individual, so either one person…

  14. comment
    Comment #12247545

    It sounds as though you objecting to being required to give any estimate at all.

  15. comment
    Comment #12247527

    if its being used to 'get velocity up' instead of measuring velocity then its not being done right. I personally think estimating projects is one of the most difficult things about…

  16. comment
    Comment #12247489

    If you're objecting to people who treat scrum (or any project management tool) as a one-stop-shop that will cure all ills I agree with you, but nobody here is saying that. If you a…

  17. comment
    Comment #12247055

    if pressure is ramping up and quality down the sprints arent serving their purpose. One of the few defining characteristics of scrum is that the developers define how much they can…

  18. comment
    Comment #12247033

    I agree, it is often not the best approach. But many situations demand a well defined approach to estimation and although the OP tried to preempt this, he didnt provide an alternat…

  19. comment
    Comment #12246741

    oh and I have attended some of those expensive Scrum 1-week courses and saw the darker side of that community - it definitely has a cult following that give it a bad name, but I've…

  20. comment
    Comment #12246722

    Scrum proponents (a label I would tentatively apply to myself) would tell you that 'you're doing it wrong' but unfortunately a point-by-point reply to this article would detract fr…

  21. comment
    Comment #10683931

    curious - I remember when modules were first proposed I thought Apple was heading up the initiative, based on their work with Objective-C. I remember reading slides someone at Appl…

  22. comment
    Comment #10544613

    > The lifetime for a washing machine is 30 years. Your software on that will last 30 years. Using a development method designed to make quickly changing requirements easy is stupid…

  23. comment
    Comment #10544556

    you mean firmware updates? What is the problem you are talking about? Plus its a regular problem ensuring that an API is stable. People do it all the time - aren't you wondering wh…

  24. comment
    Comment #10544414

    I dont really understand this. "NF_REQ_00: API must not change" Add verification tests to ensure API remains as documented. Every time someone checks in code your tests are run, br…

  25. comment
    Comment #10544313

    Ill reply to the root of all your comments, but this comment by you below sums up the problem: > If your software has clear requirements, has a point when it is done, and only requ…