odm

How can I query the smoothies that have apple in them? (below is a collection with 3 documents) _id => 1 name => 'best smoothie' ingredients => Array ( [0] => apple [1] => raspberry [2] => orange [3] => banana ) _id => 2 name => 'summer smoothie' ingredients => Array ( [0] => lemon [1] => mint ) _id => 3 name => 'yogurt smoothie' ingredients => Array ( [0] => apple [1] => blueberry ) If you simply run the below query MongoDB is smart enough to figure out what you're trying to do. { ingredients: "apple" } Mongo will see that ingredients is a list and only return documents that contain "apple"

转： https://www.jianshu.com/p/19896a763d1f 论文：Single-Shot Refinement Neural Network for Object Detection 论文链接：https://arxiv.org/abs/1711.06897 代码链接：https://github.com/sfzhang15/RefineDet ARM: 1.粗调，为后续ODM提供更好的输入； 2.减少负样本，减少搜索空间； ODM: 1.类似于SSD的检测部分 TCB： 1.特征连接模块，将ARM的特征传输给ODM； 来源： https://www.cnblogs.com/ciweizailianai/p/11351765.html

Is it possible to query for a specific date ? I found in the mongo Cookbook that we can do it for a range Querying for a Date Range Like that : db.posts.find({"created_on": {"$gte": start, "$lt": end}}) But is it possible for a specific date ? This doesn't work : db.posts.find({"created_on": new Date(2012, 7, 14) }) That should work if the dates you saved in the DB are without time (just year, month, day). Chances are that the dates you saved were new Date() , which includes the time components. To query those times you need to create a date range that includes all moments in a day. db.posts