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· 极坐标单词(PolarWords)Research

The Morphological Structure of English Words: A Corpus-Based Analysis of 7,533 Word Families

We constructed and analyzed a large-scale derivation tree corpus covering 7,533 word families and 54,795 derivation nodes. Latin and Greek roots account for 50.8% of all families, and 86.4% of word families can be decoded within just two affixation steps.

Morphology Research Vocabulary 极坐标单词(PolarWords)
· 极坐标单词(PolarWords)Research

FSRS-5.0 vs Traditional Spaced Repetition: A Data-Driven Comparison

We compared four spaced repetition algorithms over 180-day simulations. FSRS-5.0 achieves 28% fewer reviews than SM-2 while maintaining comparable retention, yielding a 37% improvement in learning efficiency.

Algorithm Research 极坐标单词(PolarWords)