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Add a URL length penalty

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This commit is contained in:
Daoud Clarke 2022-07-03 22:10:02 +01:00
parent a3ff2f537f
commit 43815c7322
1 changed files with 7 additions and 3 deletions
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10
mwmbl/tinysearchengine/rank.py
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@ -1,3 +1,4 @@
import math
import re
from abc import abstractmethod
from logging import getLogger
@ -12,6 +13,7 @@ logger = getLogger(__name__)
SCORE_THRESHOLD = 0.0
LENGTH_PENALTY=0.01
def _get_query_regex(terms, is_complete, is_url):
@ -35,15 +37,17 @@ def _score_result(terms, result: Document, is_complete: bool):
domain = parsed_url.netloc
path = parsed_url.path
string_scores = []
for result_string, is_url in [(result.title, False), (result.extract, False), (domain, True), (path, True)]:
for result_string, is_url in [(result.title, False), (result.extract, False), (domain, True), (domain, False), (path, True)]:
last_match_char, match_length, total_possible_match_length = get_match_features(
terms, result_string, is_complete, is_url)
new_score = score_match(last_match_char, match_length, total_possible_match_length)
string_scores.append(new_score)
title_score, extract_score, domain_score, path_score = string_scores
title_score, extract_score, domain_score, domain_split_score, path_score = string_scores
score = 0.01 * domain_score + 0.99 * (4 * title_score + extract_score + 4 * domain_score + path_score) * 0.1
length_penalty = math.e ** (-LENGTH_PENALTY * len(result.url))
score = (0.01 * domain_score + 0.99 * (
4 * title_score + extract_score + 2 * domain_score + 2 * domain_split_score + path_score) * 0.1) * length_penalty
# score = (0.1 + 0.9*match_score) * (0.1 + 0.9*(result.score / max_score))
# score = 0.01 * match_score + 0.99 * (result.score / max_score)
# print("Result", result, string_scores, score)