Object Storage Service:QueryVectors

Permissions

Secara default, Akun Alibaba Cloud memiliki izin penuh, sedangkan pengguna RAM atau peran RAM tidak memiliki izin apa pun. Pemilik Akun Alibaba Cloud atau administrator harus memberikan izin melalui RAM policy atau bucket policy.

Request syntax

Tingkat recall untuk panggilan QueryVectors mungkin rendah hingga 30 detik setelah indeks vektor dibuat. Data yang ditulis menggunakan operasi PutVectors akan tersedia untuk kueri dalam waktu sekitar 2 hingga 3 detik.

POST /?queryVectors HTTP/1.1
Host: examplebucket-123***456.cn-hangzhou-internal.oss-vectors.aliyuncs.com
Date: GMT Date
Authorization: SignatureValue
Content-type: application/json

{
   "filter": {
       "$and": [{
           "type": {
               "$in": ["comedy", "documentary"]
           }
       }, {
           "year": {
               "$eq": "2020"
           }
       }]
    },
   "indexName": "string",
   "queryVector": {
       "float32":[float]
    },
   "returnDistance": boolean,
   "returnMetadata": boolean,
   "topK": int
}

Request headers

Operasi ini hanya menggunakan header permintaan umum. Untuk informasi selengkapnya, lihat Common HTTP headers.

Request parameters

// Simple equality (uses $eq by default when the operator is omitted)
{"category": "finance"}

// Explicit equality / inequality
{"category": {"$eq": "finance"}}
{"category": {"$ne": "archived"}}

// Numeric comparison
{"created_year": {"$gt": 2023}}
{"created_year": {"$gte": 2024}}
{"created_year": {"$lt": 2026}}
{"created_year": {"$lte": 2025}}

// Array matching
{"language": {"$in": ["zh", "en"]}}
{"language": {"$nin": ["ja", "ko"]}}

// Existence check
{"author": {"$exists": true}}

// Logical combination
{"$and": [{"category": {"$eq": "finance"}}, {"created_year": {"$gte": 2024}}]}
{"$or": [{"category": {"$eq": "finance"}}, {"category": {"$eq": "tech"}}]}

// Multiple conditions on the same field (range)
{"score": {"$gte": 0.6, "$lte": 0.95}}

Response headers

Operasi ini hanya menggunakan header respons umum. Untuk informasi selengkapnya, lihat Common HTTP headers.

Response elements

Examples

POST /?queryVectors HTTP/1.1
Host: examplebucket-123***456.cn-hangzhou-internal.oss-vectors.aliyuncs.com
Date: Thu, 17 Apr 2025 01:33:47 GMT
Authorization: OSS4-HMAC-SHA256 Credential=LTAI********************/20250417/cn-hangzhou/oss/aliyun_v4_request,Signature=a7c3554c729d71929e0b84489addee6b2e8d5cb48595adfc51868c299c0c218
Content-type: application/json

{
   "filter": {
       "$and": [{
           "category": {
               "$in": ["technology", "science"]
           }
       }, {
           "year": {
               "$eq": "2020"
           }
       }]
    },
   "indexName": "vectorindex1",
   "queryVector": {
       "float32": [0.15, 0.25, 0.35, 0.45, 0.55]
    },
   "returnDistance": true,
   "returnMetadata": true,
   "topK": 5
}

Sample response

HTTP/1.1 200 OK
x-oss-request-id: 534B371674E88A4D8906****
Date: Thu, 17 Apr 2025 01:33:47 GMT
Connection: keep-alive
Server: AliyunOSS
Content-type: application/json

{
   "vectors": [ 
      { 
         "distance": 0.12,
         "key": "doc-001",
         "metadata": {
             "category": ["technology", "ai"],
             "title": "Introduction to Vector Search",
             "year": "2020"
         }
      },
      { 
         "distance": 0.25,
         "key": "doc-003",
         "metadata": {
             "category": ["science"],
             "title": "Advanced Vector Operations",
             "year": "2020"
         }
      }
   ]
}

SDK

Operasi QueryVectors tersedia di SDK berikut:

• Retrieve vectors (Python SDK V2)

• Retrieve vectors (Go SDK V2)

ossutil CLI

Anda dapat menggunakan perintah query-vectors pada alat baris perintah ossutil untuk menjalankan operasi ini.

Error codes