It’s about asking, “how does this algorithm behave when the number of elements
is significantly large compared to when the number of elements is orders of
magnitude larger?” Big O notation is useless for smaller sets of data. Sometimes
it’s worse than useless, it’s misguiding. This is because Big O is only an
estimate of asymptotic behavior. An algorithm that is O(n^2) can be faster than
one that’s O(n log n) for smaller sets of data (which contradicts the table
below) if the O(n log n) algorithm has significant computational overhead and
doesn’t start behaving as estimated by its Big O classification until after that
overhead is consumed. #computerscience Image Alt Text: “A graph of Big O
notation time complexity functions with Number of Elements on the x-axis and
Operations(Time) on the y-axis. Lines on the graph represent Big O functions
which are are overplayed onto color coded regions where colors represent quality
from Excellent to Horrible Functions on the graph:
O(1): constant - Excellent/Best - Green
O(log n): logarithmic - Good/Excellent - Green
O(n): linear time - Fair - Yellow
O(n * log n): log linear - Bad - Orange
O(n^2): quadratic - Horrible - Red
O(n^3): cubic - Horrible (Not shown)
O(2^n): exponential - Horrible - Red
O(n!): factorial - Horrible/Worst - Red”
Source
[https://alpha.polymaths.social/@ericjmorey/statuses/01HGGPST0FNXW2YZYV3QZQ3Z1N]
I gave my best effort to make a post on a Lemmy instance accessible to the visibly impaired, but I don’t know if what I did was effective. Lemmy doesn’t provide for alt text on image posts, so I figured I would put it in the body of the post. It seem that rind.com hasn’t had much activity. Is Lemmy simply not workable for rblind.com’s intended purpose?
Screen readers have robust navigation tools that allow you to go back a word or reread a paragraph, but alt text is read as a single block, so it’s always best to keep it reasonably short. Having a description in the body also helps low-vision users, who may not use a screen reader, and other users with cognitive disabilities.
Screen readers have robust navigation tools that allow you to go back a word or reread a paragraph, but alt text is read as a single block, so it’s always best to keep it reasonably short. Having a description in the body also helps low-vision users, who may not use a screen reader, and other users with cognitive disabilities.
Captions are a non-standard Markdown feature, but work on Lemmy the same way as link text.