mirror of
https://github.com/explosion/spaCy.git
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400 lines
14 KiB
Python
400 lines
14 KiB
Python
# coding: utf8
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from __future__ import unicode_literals, print_function
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from pathlib import Path
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from collections import Counter
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import plac
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import sys
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import srsly
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from wasabi import Printer, MESSAGES
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from ..gold import GoldCorpus, read_json_object
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from ..util import load_model, get_lang_class
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# Minimum number of expected occurences of label in data to train new label
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NEW_LABEL_THRESHOLD = 50
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# Minimum number of expected examples to train a blank model
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BLANK_MODEL_MIN_THRESHOLD = 100
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BLANK_MODEL_THRESHOLD = 2000
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@plac.annotations(
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lang=("model language", "positional", None, str),
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train_path=("location of JSON-formatted training data", "positional", None, Path),
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dev_path=("location of JSON-formatted development data", "positional", None, Path),
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base_model=("name of model to update (optional)", "option", "b", str),
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pipeline=(
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"Comma-separated names of pipeline components to train",
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"option",
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"p",
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str,
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),
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ignore_warnings=("Ignore warnings, only show stats and errors", "flag", "IW", bool),
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ignore_validation=(
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"Don't exit if JSON format validation fails",
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"flag",
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"IV",
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bool,
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),
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verbose=("Print additional information and explanations", "flag", "V", bool),
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no_format=("Don't pretty-print the results", "flag", "NF", bool),
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)
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def debug_data(
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lang,
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train_path,
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dev_path,
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base_model=None,
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pipeline="tagger,parser,ner",
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ignore_warnings=False,
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ignore_validation=False,
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verbose=False,
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no_format=False,
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):
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msg = Printer(pretty=not no_format, ignore_warnings=ignore_warnings)
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# Make sure all files and paths exists if they are needed
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if not train_path.exists():
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msg.fail("Training data not found", train_path, exits=1)
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if not dev_path.exists():
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msg.fail("Development data not found", dev_path, exits=1)
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# Initialize the model and pipeline
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pipeline = [p.strip() for p in pipeline.split(",")]
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if base_model:
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nlp = load_model(base_model)
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else:
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lang_cls = get_lang_class(lang)
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nlp = lang_cls()
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msg.divider("Data format validation")
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# Load the data in one – might take a while but okay in this case
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train_data = _load_file(train_path, msg)
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dev_data = _load_file(dev_path, msg)
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# Validate data format using the JSON schema
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# TODO: update once the new format is ready
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train_data_errors = [] # TODO: validate_json(train_data, schema)
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dev_data_errors = [] # TODO: validate_json(dev_data, schema)
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if not train_data_errors:
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msg.good("Training data JSON format is valid")
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if not dev_data_errors:
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msg.good("Development data JSON format is valid")
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for error in train_data_errors:
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msg.fail("Training data: {}".format(error))
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for error in dev_data_errors:
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msg.fail("Develoment data: {}".format(error))
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if (train_data_errors or dev_data_errors) and not ignore_validation:
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sys.exit(1)
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# Create the gold corpus to be able to better analyze data
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with msg.loading("Analyzing corpus..."):
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train_data = read_json_object(train_data)
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dev_data = read_json_object(dev_data)
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corpus = GoldCorpus(train_data, dev_data)
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train_docs = list(corpus.train_docs(nlp))
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dev_docs = list(corpus.dev_docs(nlp))
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msg.good("Corpus is loadable")
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# Create all gold data here to avoid iterating over the train_docs constantly
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gold_data = _compile_gold(train_docs, pipeline)
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train_texts = gold_data["texts"]
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dev_texts = set([doc.text for doc, gold in dev_docs])
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msg.divider("Training stats")
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msg.text("Training pipeline: {}".format(", ".join(pipeline)))
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for pipe in [p for p in pipeline if p not in nlp.factories]:
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msg.fail("Pipeline component '{}' not available in factories".format(pipe))
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if base_model:
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msg.text("Starting with base model '{}'".format(base_model))
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else:
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msg.text("Starting with blank model '{}'".format(lang))
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msg.text("{} training docs".format(len(train_docs)))
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msg.text("{} evaluation docs".format(len(dev_docs)))
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overlap = len(train_texts.intersection(dev_texts))
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if overlap:
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msg.warn("{} training examples also in evaluation data".format(overlap))
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else:
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msg.good("No overlap between training and evaluation data")
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if not base_model and len(train_docs) < BLANK_MODEL_THRESHOLD:
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text = "Low number of examples to train from a blank model ({})".format(
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len(train_docs)
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)
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if len(train_docs) < BLANK_MODEL_MIN_THRESHOLD:
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msg.fail(text)
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else:
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msg.warn(text)
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msg.text(
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"It's recommended to use at least {} examples (minimum {})".format(
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BLANK_MODEL_THRESHOLD, BLANK_MODEL_MIN_THRESHOLD
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),
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show=verbose,
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)
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msg.divider("Vocab & Vectors")
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n_words = gold_data["n_words"]
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msg.info(
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"{} total {} in the data ({} unique)".format(
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n_words, "word" if n_words == 1 else "words", len(gold_data["words"])
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)
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)
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most_common_words = gold_data["words"].most_common(10)
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msg.text(
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"10 most common words: {}".format(
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_format_labels(most_common_words, counts=True)
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),
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show=verbose,
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)
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if len(nlp.vocab.vectors):
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msg.info(
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"{} vectors ({} unique keys, {} dimensions)".format(
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len(nlp.vocab.vectors),
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nlp.vocab.vectors.n_keys,
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nlp.vocab.vectors_length,
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)
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)
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else:
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msg.info("No word vectors present in the model")
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if "ner" in pipeline:
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# Get all unique NER labels present in the data
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labels = set(label for label in gold_data["ner"] if label not in ("O", "-"))
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label_counts = gold_data["ner"]
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model_labels = _get_labels_from_model(nlp, "ner")
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new_labels = [l for l in labels if l not in model_labels]
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existing_labels = [l for l in labels if l in model_labels]
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has_low_data_warning = False
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has_no_neg_warning = False
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has_ws_ents_error = False
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msg.divider("Named Entity Recognition")
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msg.info(
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"{} new {}, {} existing {}".format(
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len(new_labels),
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"label" if len(new_labels) == 1 else "labels",
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len(existing_labels),
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"label" if len(existing_labels) == 1 else "labels",
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)
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)
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missing_values = label_counts["-"]
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msg.text(
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"{} missing {} (tokens with '-' label)".format(
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missing_values, "value" if missing_values == 1 else "values"
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)
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)
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if new_labels:
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labels_with_counts = [
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(label, count)
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for label, count in label_counts.most_common()
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if label != "-"
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]
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labels_with_counts = _format_labels(labels_with_counts, counts=True)
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msg.text("New: {}".format(labels_with_counts), show=verbose)
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if existing_labels:
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msg.text(
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"Existing: {}".format(_format_labels(existing_labels)), show=verbose
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)
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if gold_data["ws_ents"]:
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msg.fail("{} invalid whitespace entity spans".format(gold_data["ws_ents"]))
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has_ws_ents_error = True
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for label in new_labels:
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if label_counts[label] <= NEW_LABEL_THRESHOLD:
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msg.warn(
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"Low number of examples for new label '{}' ({})".format(
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label, label_counts[label]
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)
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)
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has_low_data_warning = True
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with msg.loading("Analyzing label distribution..."):
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neg_docs = _get_examples_without_label(train_docs, label)
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if neg_docs == 0:
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msg.warn(
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"No examples for texts WITHOUT new label '{}'".format(label)
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)
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has_no_neg_warning = True
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if not has_low_data_warning:
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msg.good("Good amount of examples for all labels")
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if not has_no_neg_warning:
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msg.good("Examples without occurences available for all labels")
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if not has_ws_ents_error:
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msg.good("No entities consisting of or starting/ending with whitespace")
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if has_low_data_warning:
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msg.text(
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"To train a new entity type, your data should include at "
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"least {} insteances of the new label".format(NEW_LABEL_THRESHOLD),
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show=verbose,
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)
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if has_no_neg_warning:
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msg.text(
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"Training data should always include examples of entities "
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"in context, as well as examples without a given entity "
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"type.",
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show=verbose,
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)
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if has_ws_ents_error:
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msg.text(
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"As of spaCy v2.1.0, entity spans consisting of or starting/ending "
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"with whitespace characters are considered invalid."
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)
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if "textcat" in pipeline:
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msg.divider("Text Classification")
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labels = [label for label in gold_data["textcat"]]
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model_labels = _get_labels_from_model(nlp, "textcat")
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new_labels = [l for l in labels if l not in model_labels]
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existing_labels = [l for l in labels if l in model_labels]
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msg.info(
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"Text Classification: {} new label(s), {} existing label(s)".format(
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len(new_labels), len(existing_labels)
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)
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)
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if new_labels:
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labels_with_counts = _format_labels(
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gold_data["textcat"].most_common(), counts=True
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)
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msg.text("New: {}".format(labels_with_counts), show=verbose)
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if existing_labels:
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msg.text(
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"Existing: {}".format(_format_labels(existing_labels)), show=verbose
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)
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if "tagger" in pipeline:
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msg.divider("Part-of-speech Tagging")
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labels = [label for label in gold_data["tags"]]
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tag_map = nlp.Defaults.tag_map
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msg.info(
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"{} {} in data ({} {} in tag map)".format(
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len(labels),
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"label" if len(labels) == 1 else "labels",
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len(tag_map),
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"label" if len(tag_map) == 1 else "labels",
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)
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)
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labels_with_counts = _format_labels(
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gold_data["tags"].most_common(), counts=True
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)
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msg.text(labels_with_counts, show=verbose)
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non_tagmap = [l for l in labels if l not in tag_map]
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if not non_tagmap:
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msg.good("All labels present in tag map for language '{}'".format(nlp.lang))
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for label in non_tagmap:
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msg.fail(
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"Label '{}' not found in tag map for language '{}'".format(
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label, nlp.lang
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)
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)
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if "parser" in pipeline:
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msg.divider("Dependency Parsing")
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labels = [label for label in gold_data["deps"]]
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msg.info(
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"{} {} in data".format(
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len(labels), "label" if len(labels) == 1 else "labels"
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)
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)
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labels_with_counts = _format_labels(
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gold_data["deps"].most_common(), counts=True
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)
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msg.text(labels_with_counts, show=verbose)
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msg.divider("Summary")
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good_counts = msg.counts[MESSAGES.GOOD]
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warn_counts = msg.counts[MESSAGES.WARN]
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fail_counts = msg.counts[MESSAGES.FAIL]
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if good_counts:
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msg.good(
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"{} {} passed".format(
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good_counts, "check" if good_counts == 1 else "checks"
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)
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)
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if warn_counts:
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msg.warn(
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"{} {}".format(warn_counts, "warning" if warn_counts == 1 else "warnings")
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)
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if fail_counts:
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msg.fail("{} {}".format(fail_counts, "error" if fail_counts == 1 else "errors"))
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if fail_counts:
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sys.exit(1)
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def _load_file(file_path, msg):
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file_name = file_path.parts[-1]
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if file_path.suffix == ".json":
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with msg.loading("Loading {}...".format(file_name)):
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data = srsly.read_json(file_path)
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msg.good("Loaded {}".format(file_name))
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return data
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elif file_path.suffix == ".jsonl":
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with msg.loading("Loading {}...".format(file_name)):
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data = srsly.read_jsonl(file_path)
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msg.good("Loaded {}".format(file_name))
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return data
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msg.fail(
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"Can't load file extension {}".format(file_path.suffix),
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"Expected .json or .jsonl",
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exits=1,
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)
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def _compile_gold(train_docs, pipeline):
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data = {
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"ner": Counter(),
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"cats": Counter(),
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"tags": Counter(),
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"deps": Counter(),
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"words": Counter(),
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"ws_ents": 0,
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"n_words": 0,
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"texts": set(),
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}
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for doc, gold in train_docs:
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data["words"].update(gold.words)
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data["n_words"] += len(gold.words)
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data["texts"].add(doc.text)
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if "ner" in pipeline:
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for i, label in enumerate(gold.ner):
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if label.startswith(("B-", "U-", "L-")) and doc[i].is_space:
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# "Illegal" whitespace entity
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data["ws_ents"] += 1
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if label.startswith(("B-", "U-")):
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combined_label = label.split("-")[1]
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data["ner"][combined_label] += 1
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elif label == "-":
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data["ner"]["-"] += 1
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if "textcat" in pipeline:
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data["cats"].update(gold.cats)
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if "tagger" in pipeline:
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data["tags"].update(gold.tags)
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if "parser" in pipeline:
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data["deps"].update(gold.labels)
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return data
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def _format_labels(labels, counts=False):
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if counts:
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return ", ".join(["'{}' ({})".format(l, c) for l, c in labels])
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return ", ".join(["'{}'".format(l) for l in labels])
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def _get_examples_without_label(data, label):
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count = 0
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for doc, gold in data:
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labels = [label.split("-")[1] for label in gold.ner if label not in ("O", "-")]
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if label not in labels:
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count += 1
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return count
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def _get_labels_from_model(nlp, pipe_name):
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if pipe_name not in nlp.pipe_names:
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return set()
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pipe = nlp.get_pipe(pipe_name)
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return pipe.labels
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