prrao87 commited on
Commit
e8014de
·
verified ·
1 Parent(s): 7c4ded4

Update README with LanceDB examples

Browse files
Files changed (1) hide show
  1. README.md +49 -0
README.md CHANGED
@@ -57,6 +57,18 @@ ds = lance.dataset("hf://datasets/lance-format/ade20k-lance/data/validation.lanc
57
  print(ds.count_rows(), ds.schema.names, ds.list_indices())
58
  ```
59
 
 
 
 
 
 
 
 
 
 
 
 
 
60
  ## Read an image with its segmentation
61
 
62
  ```python
@@ -87,6 +99,23 @@ rows = ds.scanner(
87
  ).to_table().to_pylist()
88
  ```
89
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
90
  ## Visual similarity search
91
 
92
  ```python
@@ -104,6 +133,26 @@ neighbors = ds.scanner(
104
  ).to_table().to_pylist()
105
  ```
106
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
107
  ## Why Lance?
108
 
109
  - One dataset for images + segmentation + instance + scene + objects + embeddings + indices — no folder of paired files.
 
57
  print(ds.count_rows(), ds.schema.names, ds.list_indices())
58
  ```
59
 
60
+ ## Load with LanceDB
61
+
62
+ These tables can also be consumed by [LanceDB](https://lancedb.github.io/lancedb/), the serverless vector database built on Lance, for simplified vector search and other queries.
63
+
64
+ ```python
65
+ import lancedb
66
+
67
+ db = lancedb.connect("hf://datasets/lance-format/ade20k-lance/data")
68
+ tbl = db.open_table("validation")
69
+ print(f"LanceDB table opened with {len(tbl)} scene images")
70
+ ```
71
+
72
  ## Read an image with its segmentation
73
 
74
  ```python
 
99
  ).to_table().to_pylist()
100
  ```
101
 
102
+ ### Filter with LanceDB
103
+
104
+ ```python
105
+ import lancedb
106
+
107
+ db = lancedb.connect("hf://datasets/lance-format/ade20k-lance/data")
108
+ tbl = db.open_table("validation")
109
+
110
+ rows = (
111
+ tbl.search()
112
+ .where("array_has_all(objects_present, ['bed', 'window'])")
113
+ .select(["filename", "scene"])
114
+ .limit(10)
115
+ .to_list()
116
+ )
117
+ ```
118
+
119
  ## Visual similarity search
120
 
121
  ```python
 
133
  ).to_table().to_pylist()
134
  ```
135
 
136
+ ### LanceDB visual similarity search
137
+
138
+ ```python
139
+ import lancedb
140
+
141
+ db = lancedb.connect("hf://datasets/lance-format/ade20k-lance/data")
142
+ tbl = db.open_table("validation")
143
+
144
+ ref = tbl.search().limit(1).select(["image_emb"]).to_list()[0]
145
+ query_embedding = ref["image_emb"]
146
+
147
+ results = (
148
+ tbl.search(query_embedding)
149
+ .metric("cosine")
150
+ .select(["filename", "scene"])
151
+ .limit(5)
152
+ .to_list()
153
+ )
154
+ ```
155
+
156
  ## Why Lance?
157
 
158
  - One dataset for images + segmentation + instance + scene + objects + embeddings + indices — no folder of paired files.