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- 13:43, 27 February 2024 Energy, power, and work (hist | edit) [1,461 bytes] Helpful (talk | contribs) (Created page with "<!-- MOVE: Note that "power is the rate of work" is a nice set of words, but does not teach differences like: * Energy and power :: e.g. 1000W is a ''rate''. 1000Wh is an amount of energy * Work and power '''''Roughly''''' speaking: * work is the total amount of expended energy * power is the ''rate'' - different rates over different times can equal the same overall work (or, less formally, energy, with the ). Pushing very hard for ten seconds may be just as much...")
- 18:06, 26 February 2024 Algorithms (hist | edit) [3,295 bytes] Helpful (talk | contribs) (Created page with "<!-- ===What does algorithm mean?=== A way of calculating. A way of getting a particular thing done. Typically, practical answers to 'how does it X?' It refers to only the method, not the data you feed into it, nor the hardware it runs on. Programmers will often prefer to call things algorithm only when they are either specific theory (e.g. a specific way of sorting), OR concrete enough to just run And usually for simple, well-defined, questions, such as "ho...")
- 17:34, 26 February 2024 Experiment building - on online experiments (hist | edit) [1,292 bytes] Helpful (talk | contribs) (Created page with "{{Experiments}} ===On online experiments=== Online experiments, as convenient as they are, means there are many things you can no longer control for - display time, hardware response time, browser details, whether it is a computer or a phone (I have a years-old phone and I wouldn't trust its timing), headphone quality (there are some tests you can do to get a gauge of this) '''Browsers''' Assume that browsers tend to merge movement into 60Hz intervals - or what...")
- 17:33, 26 February 2024 Experiment building - on counterbalancing (hist | edit) [3,005 bytes] Helpful (talk | contribs) (Created page with "===Thinking about counterbalancing===")
- 13:56, 24 February 2024 Are computers getting faster or not really? (hist | edit) [1,973 bytes] Helpful (talk | contribs) (Created page with " <!-- Wirth's law - Wirth observed that perhaps software is getting slower more rapidly than hardware is becoming faster, though he attributes it to others who had been pointing out this patterns for at least a decade, and this is decades ago now. May's law / Gates's law - the speed of software halves every 18 months, compensating Moore's law. Programmers get lazy about efficiency because that isn't really visible as long as hardware And we keep adding more ''st...") originally created as "Are computers getting faster or slower?"
- 20:58, 23 February 2024 Precision and recall (hist | edit) [460 bytes] Helpful (talk | contribs) (Created page with "<!-- The terms '''precision and recall''' are perhaps best known around search systems and other information retrieval systems. The terms precision and recall are used more widely, and in classification they are more specific: * precision - What proportion of positive identifications was actually correct : about a lack of false positives * recall - : about a lack of false negatives Because it's F-score https://en.wikipedia.org/wiki/F-score -->")
- 20:53, 23 February 2024 False positives and false negatives (hist | edit) [11 bytes] Helpful (talk | contribs) (Created page with "(ELSEWHERE)")
- 21:57, 19 February 2024 What can I remove from ~/.cache? (hist | edit) [711 bytes] Helpful (talk | contribs) (Created page with "<!-- It is arguably safe to delete the whole thing, in that you should not suffer permanent data loss. That said, * some things are built when they need to be (and will be slow then) * some things will be downloaded on demand, which you may not want very often * some things may be currently running and not thinking about half of it dissapearing from under it. Let's look at some offenders * [https://github.com/python-poetry/poetry pypoetry] - package manager, should...")