Negotiated pricing · Preview first, then confirm version and scope
About 46.65M recordsRegistered scale / confirm version
About 112 GBRegistered size / confirm scope
Limited actual excerptsCurrent public preview
Understand the data
Start with the data unit, selection criteria and available samples to assess project fit.
01
Content organization
Card fronts/backs and options support term retrieval, definition matching and bidirectional Q&A. Ten text projections are public. The dictionary retains native id, type, url, Q&A and options structure; projection columns differ from original fields.
02
Scope selection
Select by type/subject; Retain Q&A card sides; Filter by media language
03
Preview and version
10 preview records · 0 image excerpts · dictionary and README. Confirm the full delivery version before ordering.
Preview before evaluating
Use limited excerpts to inspect content and structure. The README identifies provenance, field projections and preview limits.
Aggregate statistics · 卡片类型分布统计
id
type
word
definition
1856134788
math
integer
set of whole numbers and their opposite
1856134789
math
absolute value
The distance a number is from zero on a number line
1856134790
math
zero pairs
positive + negative numbers - they cross each other out
Expand preview record 01
id
1856134788
type
math
word
integer
definition
set of whole numbers and their opposite
language
en
options_count
3
Expand preview record 02
id
1856134789
type
math
word
absolute value
definition
The distance a number is from zero on a number line
language
en
options_count
3
Expand preview record 03
id
1856134790
type
math
word
zero pairs
definition
positive + negative numbers - they cross each other out
language
en
options_count
2
Take a small sample kit
10 preview records · 0 image excerpts · dictionary and README
ZIP · 3.2 KB · Includes Chinese and English README
Verified and requested fields are identified in the kit; exact structure depends on the confirmed delivery version.
Field / content
Type
Description
id
integer
原始卡片记录 ID。
type
string
原始学科或卡片类型。
url
string
原始学习卡片链接。
Q&A
array<object>
原始卡片面数组; 样本表格将媒体文本展开为 word、definition 和 language。
options
array<object>
原始选项、干扰项与学习方式配置; 预览仅展示数量。
5 fields shown; all 5 references are in schema-reference.json. Refer to the README for native fields versus preview projections.
Where it fits
Evaluate task relevance and confirm samples and usage rights before delivery.
01
Study card retrieval
Build bidirectional term/definition indexes and check front-to-back mappings.
02
Bidirectional Q&A research
Stratify cards by subject to assess Q&A and knowledge-recall relevance.
03
Option and distractor analysis
Inspect native option/distractor nesting to avoid losing information during flattening.
From preview to delivery
Pricing is negotiated around your confirmed delivery scope.
01
Inspect the preview
Download the kit and check content, fields and limitations.
02
Confirm scope and rights
Share your topic, version, time range, use and format requirements.
03
Agree on price and delivery
Review samples, quality, delivery contents and negotiated price.
Frequently asked questions
Clarify preview scope, scale and permissions before delivery.
Does the kit contain the full dataset?
10 preview records · 0 image excerpts · dictionary and README. The public kit is for preview evaluation. Full data requires a confirmed version and delivery list.
Why does catalog scale differ from preview count?
Catalog scale comes from registered sources or official specifications. Public kits contain limited excerpts or references. Verify actual deliverable scale for your selected scope.
Can I use it for training or commercial projects?
Confirm the selected version’s license, provenance and permitted uses. Catalog listing and preview access do not grant training, commercial-use or redistribution rights to the full data.
Evaluation and acceptance checks
Check the actual samples before selecting a batch. These are suggested acceptance criteria, not quality guarantees for the full corpus.
01
Front/back Q&A, set and option structure
Ask for verifiable examples or counting rules for your selected version and use.
02
Mapping native fields to preview projections
Ask for verifiable examples or counting rules for your selected version and use.
03
Card deduplication and evaluation of both directions
Ask for verifiable examples or counting rules for your selected version and use.
Find the right scope for your project
Start with samples and fields, then share your topic, format and intended use. Confirm available versions, delivery contents and negotiated pricing with sales.
Contains reviewed limited records, images or audio excerpts, with field references and Chinese/English README files. Confirm the full delivery version before ordering.
A limited, reviewed sample is shown and may not represent the complete delivery.
Field reference
Field structure follows the confirmed dataset version.
License
本页为数据目录与需求咨询。训练、商业使用及再分发的许可范围需在交付前逐项确认。
Request a quote
Online checkout and automatic downloads are not available. Contact sales to confirm the final quote and delivery method; our team will arrange delivery after payment.