A mimetic poly-alloy of the Quicksilver
scoring algorithm, essentially LiquidMetal.
Flex matching short abbreviations against longer strings is a boon in
productivity for typists. Applications like
Launchy have made this method of keyboard entry a
popular one. It's time to bring this same functionality to web controls.
LiquidMetal makes scoring long strings against abbreviations easy.
Include the library:
Score any string against an abbreviation:
LiquidMetal.score("FooBar", "foo") //=> 0.950
LiquidMetal.score("FooBar", "fb") //=> 0.917
LiquidMetal.score("Foo Bar", "fb") //=> 0.929
LiquidMetal.score("Foo Bar", "baz") //=> 0.0
LiquidMetal.score("Foo Bar", "") //=> 0.8
All scores fall between a range of 0.0 (no match) to 1.0 (perfect match).
- To satisfy my own requirements for the
- The Quicksilver algorithm doesn't give proper weight to abbreviations that
match the first character of the scored string.
- The Quicksilver algorithm is extremely slow for certain length
string/abbreviation combinations because of its use of recursion. While
slightly slower for shorter length string/abbreviation combinations,
LiquidMetal outperforms the Quicksilver algorithm by orders of magnitude under
sensitive and doesn't give added weight to camel case strings; whereas,
LiquidMetal is case insensitive and does give added weight to uppercase
letters in camel case strings.
- More tests
- Consider tweaking the scores for "trailing" characters
- Improve implementation of highest score matching (LiquidMetal
currently returns the highest scoring match for an abbreviation,
but is inefficient)
- See if it's possible to tune the performance further
Ryan McGeary (@rmm5t)