added russian transliteration

README.md

@@ -73,7 +73,7 @@ $ ./app/manage.py runserver
     },
     {
       "value": "каучук",
-      "type": "Матерьял"
+      "type": "Материал"
     },
     {
       "value": "синий",

app/conf/settings/base.py

@@ -216,3 +216,4 @@ REST_FRAMEWORK = {
 
 # django-cors-headers
 CORS_ALLOW_ALL_ORIGINS = True
+YANDEX_DICT_API_KEY = env.str('YANDEX_DICT')

app/search/services/search/bert.py

@@ -0,0 +1,25 @@
+from transformers import BertTokenizer, BertModel
+import torch
+import numpy as np
+
+from scipy.spatial import distance
+
+tokenizer = BertTokenizer.from_pretrained("DeepPavlov/rubert-base-cased-sentence")
+model = BertModel.from_pretrained("DeepPavlov/rubert-base-cased-sentence")
+
+
+def get_embedding(word):
+    inputs = tokenizer(word, return_tensors="pt")
+    outputs = model(**inputs)
+    word_vect = outputs.pooler_output.detach().numpy()
+    return word_vect
+
+
+def get_distance(first_word, second_word):
+    w1 = get_embedding(first_word)
+    w2 = get_embedding(second_word)
+    cos_distance = np.round(distance.cosine(w1, w2), 2)
+    return 1 - cos_distance
+
+
+get_distance("электрогитара", "электрическая гитара")

app/search/services/search/main.py

@@ -21,7 +21,7 @@ def process_search(data: List[dict], limit=5, offset=0) -> List[dict]:
             qs = qs & apply_qs_search(val)
             qs = qs.order_by("-score")
         elif typ == "All":
-            qs = apply_all_qs_search(qs, val) & qs
+            qs = apply_all_qs_search(val) & qs
         elif typ == "Category":
             qs = apply_qs_category(qs, val)
             qs = qs.order_by("-score")
@@ -35,4 +35,4 @@ def process_search(data: List[dict], limit=5, offset=0) -> List[dict]:
                 qs = qs.filter(unit_characteristics__in=val)
             else:
                 qs = qs.filter(characteristics__in=val)
-    return [x.serialize_self() for x in qs.distinct()[offset: offset + limit]]
+    return [x.serialize_self() for x in qs.distinct()[offset : offset + limit]]

app/search/services/search/methods.py

@@ -1,11 +1,14 @@
+from functools import cache
 from typing import List
 
+from django.utils.text import slugify
+
 from search.models import (
     Product,
     ProductCharacteristic,
     ProductUnitCharacteristic,
 )
-from search.services.spell_check import pos
+from search.services.spell_check import pos, spell_check
 
 
 def _clean_text(text: str) -> List[str]:
@@ -13,9 +16,11 @@ def _clean_text(text: str) -> List[str]:
         text = text.replace(st, " ")
     text = text.split()
     functors_pos = {"INTJ", "PRCL", "CONJ", "PREP"}  # function words
-    return [word for word in text if pos(word) not in functors_pos]
+    text = [word for word in text if pos(word) not in functors_pos]
+    return [spell_check(x) for x in text]
 
 
+@cache
 def process_unit_operation(unit: ProductUnitCharacteristic.objects, operation: str):
     if operation.startswith("<=") or operation.startswith("=<"):
         return unit.filter(
@@ -41,20 +46,20 @@ def process_unit_operation(unit: ProductUnitCharacteristic.objects, operation: s
     return unit
 
 
+@cache
 def apply_qs_search(text: str):
     text = _clean_text(text)
-    products = Product.objects.none()
+    qs = Product.objects.filter()
     for word in text:
-        products = (
+        qs = qs.filter(name__unaccent__trigram_similar=word) | qs.filter(
-            products
+            name__unaccent__icontains=word
-            | Product.objects.filter(name__unaccent__icontains=word)
-            | Product.objects.filter(name__unaccent__trigram_similar=word)
         )
-    products = products.order_by("-score")
+    products = qs.order_by("-score")
     return products
 
 
-def apply_all_qs_search(orig_qs, text: str):
+@cache
+def apply_all_qs_search(text: str):
     # words
     text = _clean_text(text)
 
@@ -105,9 +110,23 @@ def apply_all_qs_search(orig_qs, text: str):
         )
         qs = (
             Product.objects.filter(name__icontains=word)
+            | Product.objects.filter(name__trigram_similar=word)
             | Product.objects.filter(category__name__icontains=word)
             | Product.objects.filter(characteristics__in=car)
         )
+        if any(
+            x in word
+            for x in "абвгдеёжзийклмнопрстуфхцчшщъыьэюяАБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ"
+        ):
+            qs = qs | Product.objects.filter(
+                name__icontains=word.translate(
+                    str.maketrans(
+                        "абвгдеёжзийклмнопрстуфхцчшщъыьэюяАБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ",
+                        "abvgdeejzijklmnoprstufhzcss_y_euaABVGDEEJZIJKLMNOPRSTUFHZCSS_Y_EUA",
+                    )
+                )
+            )
+        print(qs)
         prod = prod & qs
 
         if u_qs:
@@ -116,11 +135,13 @@ def apply_all_qs_search(orig_qs, text: str):
     return prod
 
 
+@cache
 def apply_qs_category(qs, name: str):
     qs = qs.filter(category__name__icontains=name)
     return qs
 
 
+@cache
 def appy_qs_characteristic(qs, name: str):
     char = ProductCharacteristic.objects.filter(product__in=qs)
     char = char.filter(characteristic__value__icontains=name) | char.filter(

app/search/services/search/prepare.py

@@ -2,11 +2,15 @@ from typing import List, Dict
 
 from rest_framework.exceptions import ValidationError
 
-from search.models import Characteristic, ProductCharacteristic, ProductUnitCharacteristic, UnitCharacteristic
+from search.models import (
+    Characteristic,
+    ProductCharacteristic,
+    ProductUnitCharacteristic,
+    UnitCharacteristic,
+)
 from search.services.hints import get_hints
 from search.services.search.methods import process_unit_operation
-)
+from search.services.spell_check import spell_check
-from search.services.spell_check import spell_check_ru as spell_check
 
 
 def apply_union(data: List[Dict]) -> List[Dict]:

requirements/base.txt

@@ -13,3 +13,8 @@ celery==5.2.7
 
 pyspellchecker==0.7.0
 pymorphy2
+
+transformers
+torch
+scipy
+numpy