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# | |
# Pyserini: Reproducible IR research with sparse and dense representations | |
# | |
# Licensed under the Apache License, Version 2.0 (the "License"); | |
# you may not use this file except in compliance with the License. | |
# You may obtain a copy of the License at | |
# | |
# http://www.apache.org/licenses/LICENSE-2.0 | |
# | |
# Unless required by applicable law or agreed to in writing, software | |
# distributed under the License is distributed on an "AS IS" BASIS, | |
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
# See the License for the specific language governing permissions and | |
# limitations under the License. | |
# | |
# This file generates the .tsv files which map each passage to its original docid | |
# from the passage collection | |
# | |
# Usage: | |
# python scripts/msmarco_v2/build_passage_to_doc_id_map.py \ | |
# --input collections/msmarco_v2_passage \ | |
# --output /path/to/idmap_dir | |
import os | |
import math | |
import json | |
import gzip | |
import argparse | |
from multiprocessing import Pool | |
def write_mapping(psg_fn, outp_fn): | |
open_handle = gzip.open if psg_fn.endswith(".gz") else open | |
with open_handle(psg_fn) as fin, open(outp_fn, "w") as fout: | |
for line in fin: | |
line = json.loads(line) | |
pid, docid = line["pid"], line["docid"] | |
fout.write(f"{pid}\t{docid}\n") | |
def main(args): | |
input_dir, output_dir = args.input, args.output | |
threads = args.threads | |
if not os.path.exists(output_dir): | |
os.makedirs(output_dir, exist_ok=True) | |
inp_outp_fn_pairs = [( | |
os.path.join(input_dir, psg_fn), | |
os.path.join(output_dir, f"{psg_fn.rstrip('.gz')}.idmap.tsv") | |
) for psg_fn in os.listdir(input_dir)] | |
with Pool(threads) as p: | |
p.starmap(write_mapping, inp_outp_fn_pairs) | |
if __name__ == "__main__": | |
parser = argparse.ArgumentParser(description="Build mapping from passage id to document id (MS MARCO v2)") | |
parser.add_argument("--input", type=str, required=True, help="path to msmarco passage.") | |
parser.add_argument("--output", type=str, required=True, help="output directory to store the mapping tsv files.") | |
parser.add_argument("--threads", type=int, default=5, help="Number of threads to use.") | |
args = parser.parse_args() | |
main(args) | |