typing exercises

character sets

• Numeric characters (0123456789)
• Special characters (~!@#$%^&()_+-={}[];\',., *| missing)
• Alphabet
  • a - z
  • A - Z
    • left hand shift + right hand a - z
    • right hand shift + left hand a - z

yarn start

Dojo Web (alpha)

• cd dojo-web-server
• yarn start
• page is available at localhost:8080

Design

Instant Feedback

• error on current key
• repeated errors for the same key

Configuration

• accept correction or not
• able to see the next few letters or not
• automatically remove wrong characters or not (especially for training, typing backspace in-between adds up mental noises)
• set of keys
• difficulty (definition? cue: finger distance between neighbors, repeated keys in a sequence (lower the difficulty), randomness, ...)

Mode

• training with visual cue (virtual keyboard with keys highlighted)
• test session (strict config)
• review session (replay, statistics, annotation)
• RPG (against imaginary boss, life point, attack, levels, etc.)
  • dungeon explore
    • people sharing the same world map
    • pairing active users by effort (time investment, improvement, playbook, etc.)
  • # of corrects - # of errors = # of steps available

similar idea ~ make data labeling fun to play

• feedback: users' own effort improves AI-powered system that directly affects the user experience
  • users will be divided into isolated groups to test out multiple configurations / evolution tracks
  • dialogue bot (NLP), NPC strategies (reinforcement learning), player pairing/recommendation

picture bounding box labeling

• memory game: recall the position

Dungeons TOME

sightreading.training — A tool for learning to sight-read sheet music

connection to music streaming services

Statistics

Global

• total number of errors
• sorting keys by number of errors
• sorting keys by reflex time
• trend diagram over a period of time

Local

1. record all key strokes

• characters
  • "A"-"Z", "a"-"z", "!@#$%^&*()-_=+|"
  • "Backspace", "Shift"
  • the rest are grouped into "Other"
    • "Space", modifiers, function keys (Arrow keys? depends on Mode)
• reflex time
• errors (~ matching)

2. group key strokes into clusters (to determine "hard" snippets) by

• time-related
  • average speed over a window
  • below a threshold of average speed
  • below a threshold of reflex time
• accuracy-related
  • below a threshold of errors
• user annotated

Guideline

2018-08-10 4min

pain points

1. alternate between little finger and ring finger e.g. [], 09,de pl oy
2. double strike with the same finger, especially little finger and ring finger e.g. dep lo y

2018-07-24 4min 10s

2018-07-04 4min 40s

Note taking in latex is smoother but missing * and | in training.

Need a better symbol generator.

TODO

• build a composable random number generator
  • Linear cogruential generator (LCG)
• build common distributions on top of that
• generate from customized set of symbols

2018-06-29 5min

Performance kind of stabilized. Need to target the poorly-handled subset of symbols.

No enough data collected during the exercises. One way is to build a web app for this.

By mental statistics, %^& was mistyped most frequently. For 23@#, sometimes not using the optimal finger.

Left shift and right shift switching needs some work.

Current strategy is to switch hand when the other one is "busy". An exception: 6 or ^ is right in the middle of left and right hands. When typing a sequence like ^6^, there is no need to switch hands but press and release shift by the same hand.

Records

dojo-web with full charset (# = 500)

2019-06-06-1 3min 34s

2019-05-15-1 3min 29s

2019-04-30-1 3min 31s

2019-04-24-1 3min 38s

2019-04-19-1 3min 33s

2019-04-16-1 3min 22s

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2019-03-21-1 3min 24s

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Archive

2018-11-15-1 3min 33s

2018-11-14-1 3min 49s

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2018-07-31-2 3min 54s

2018-07-31-1 3min 48s

2018-07-30-2 4min 01s

2018-07-30-1 4min 07s

2018-07-29-2 3min 53s

2018-07-29-1 4min 29s

2018-07-28-2 4min 14s

2018-07-28-1 4min 11s

2018-07-27-2 4min 05s

2018-07-27-1 4min 01s

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2018-07-26-1 4min 16s

2018-07-25-1 3min 58s

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2018-07-24-1 4min 13s

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2018-07-23-1 4min 09s

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2018-07-21-2 4min 11s

2018-07-21-1 4min 43s

2018-07-20-2 4min 18s

2018-07-20-1 4min 04s

2018-07-19-2 4min 38s

2018-07-19-1 4min 34s

2018-07-18-2 4min 18s

2018-07-18-1 4min 24s

2018-07-17-2 4min 02s

2018-07-17-1 4min 04s

2018-07-16-1 4min 17s

2018-07-15-2 4min 24s

2018-07-15-1 4min 59s

2018-07-14-2 4min 26s

2018-07-14-1 4min 32s

2018-07-13-2 4min 14s

2018-07-13-1 4min 43s

2018-07-11-2 4min 31s

2018-07-11-1 4min 46s

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2018-07-08-1 4min 30s

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2018-07-06-2 4min 35s

2018-07-06-1 4min 14s

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2018-06-27-1 4min 54s

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2018-06-24-1 6min 21s

2018-06-23-1 6min 27s

2018-06-22-2 7min 11s

2018-06-22-1 7min 36s

Bug

Partially Fixed, edge case: \\\\, only one \ got removed. Fixed, 2018-12-09 2018-12-08 Parsed response string from purescript-affjax contains quotes and escape token (\).