add Data sigs

sigs/data/README.md

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+# MindSpore Data Special Interest Group (SIG)
+
+This is the working repo for the Data special interest group (SIG). This repo contains all the artifacts, materials, meeting notes and proposals regarding **dataset - data processing** and **mindrecord - data format** in MindSpore. Feedbacks and contributions are welcome.
+1. **Data Processing**: You can understand it as a Dataset, which is mainly responsible for reading the user's data into a Dataset, then performing related data enhancement operations (such as: resize, onehot, rotate, shuffle, batch ...), and finally provide the Dataset to the training process.
+2. **Data Format**: It can conveniently normalize the user's training data to a unified format (MindRecord). The specific operation steps are as follows: The user can easily convert the training data into MindRecrod data by defining the training data schema and calling the Python API interface. The format is then read into a Dataset through MindDataset and provided to the training process.
+
+# SIG Leads
+
+* Liu Cunwei (Huawei)
+
+# Logistics
+
+* SIG leads will drive the meeting.
+* Meeting annoucement will be posted on our gitee channel: https://gitee.com/mindspore/community/sigs/data
+* Feedbacks and topic requests are welcome by all.
+
+# Discussion
+
+* Slack channel https://app.slack.com/client/TUKCY4QDR/C010RPN6QNP?cdn_fallback=2
+* Documents and artifacts: https://gitee.com/mindspore/community/sigs/data
+
+# Meeting notes
+
+* [Thursday April 2, 2020](./meetings/001-20200402.md)
+

sigs/data/meetings/001-20200402.md

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+# Thursday April 2, 2020 at 21:30pm GMT+8
+
+## Agenda
+* Need to change old api to new api, PR: https://gitee.com/mindspore/mindspore/pulls/22
+* Discuss how to avoid such problems when subsequent interface changes
+
+## Conference links
+* https://meet.jit.si/MindSporeDataSIG
+
+## Attendees 
+* Liu Cunwei (Huawei)
+* Pan Fengfeng (Huawei)
+* Guo Zhijian (Huawei)
+* He Leiwang (Huawei)
+* Huang Zhipeng (Huawei)
+* Nattavut Sutyanyong (Huawei)
+* Robin Grosman (Huawei)
+* Michael Feng (Huawei)
+
+## Notes
+* TODO
+
+## Action items
+* TODO