OPENNLP-547: Add a dependency parser component - #1236

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OPENNLP-547-dependency-parser

Commits on Sep 4, 2026

depparse: Arc-standard dependency parser skeleton with CoNLL-U reader and UAS/LAS evaluator
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fc54edc
depparse: DependencyModel persistence and a gated Universal Dependencies evaluation
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depparse: Read CoNLL-U raw so multiword-token sentences keep their dependencies
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depparse: Valency and child features for the transition classifier
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depparse: Pure-Java feedforward neural tier, training and inference in the JVM
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depparse: Pretrained word embedding seeding for the feedforward trainer
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depparse: Beam search decoding for the feedforward parser
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depparse: Global refinement with beam search and early update
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depparse: State, transition, usage, and edge-case tests; expanded trainer and parser javadoc
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depparse: Document treebank acquisition for the gated evaluation with a download helper
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depparse: Refine into a new model, fail loud on unknown transitions, and read blanks and case through the project seams
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depparse: Restore the final-sigma rule in vocabulary normalization and make model bytes reproducible
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depparse: Cache hidden-layer contributions per feature pair on frozen models
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depparse: Validate relation labels through StringUtil.isBlank
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dependency: Add a dependency parser manual chapter with a mirror-tested example
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depparse: Address review: decode outcomes once, fold duplication, name constants
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depparse: Address review: cite specs and document private helpers
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OPENNLP-547: Parse CoNLL-U fields without regex
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OPENNLP-547: Cover parser integrity boundaries
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OPENNLP-547: Enforce parser integrity boundaries
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OPENNLP-547: Cover malformed feedforward models
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OPENNLP-547: Validate feedforward model files
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OPENNLP-547: Cover model scores and CoNLL-U framing
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OPENNLP-547: Validate model scores and CoNLL-U framing
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OPENNLP-547: Cover feedforward action inventory
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OPENNLP-547: Train only observed parser actions
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OPENNLP-547: Verify oracle and thread safety contracts
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OPENNLP-547: Cover incomplete action inventories
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OPENNLP-547: Reject incomplete action inventories
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OPENNLP-547: Cover leading-star word normalization
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OPENNLP-547: Normalize ordinary leading-star words
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OPENNLP-547: Cover unserializable trainer dimensions
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OPENNLP-547: Bound trainable model dimensions
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OPENNLP-547: Exercise shared parser instances concurrently
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OPENNLP-547: Cover treebank revision pinning
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OPENNLP-547: Pin dependency evaluation data
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9848895
OPENNLP-547: Add parser examples and trim commentary
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64c00b0
OPENNLP-547: Cover incomplete MaxEnt actions
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OPENNLP-547: Cover duplicate MaxEnt actions
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OPENNLP-547: Validate MaxEnt action inventories
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OPENNLP-547: Cover non-finite training weights
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OPENNLP-547: Detect numerical training overflow
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OPENNLP-547: Cover case-ignorable sigma context
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OPENNLP-547: Cover uncased sigma context
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OPENNLP-547: Cover punctuation in sigma context
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OPENNLP-547: Apply Unicode sigma context
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OPENNLP-547: Use toolkit case mapping
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OPENNLP-547: State dependency evaluation inputs
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OPENNLP-547: Expose dependency evaluation metrics
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OPENNLP-547: Document the remaining constructors and private contracts
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