Flink series of articles 1. Flink column The Flink column systematically introduces a certain knowledge point and explains it with specific examples. 1. Flink deployment series This section introduces the basic content related to the deployment and configuration of Flink. 2. Flink basic series This part introduces the basic parts of Flink, such as terminology, […]
Tag: time
[Java] Timing tasks – Timer/TimerTask source code principle analysis
1. Background and usage When implementing various server-side systems on a daily basis, we will definitely have the need for some scheduled tasks. For example, automatic reminders for meetings half an hour in advance, scheduled/periodic execution of asynchronous tasks, etc. So how to implement such a scheduled task system? The Timer class provided by Java […]
C# Onnx LSTR Transformer-based end-to-end real-time lane line detection
Table of Contents Effect Model information project code download Effect End-to-end real-time lane line detection Model information lstr_360x640.onnx Inputs ———————– name: input_rgb tensor: Float[1, 3, 360, 640] name: input_mask tensor: Float[1, 1, 360, 640] ————————————————– ————- Outputs ———————– name:pred_logits tensor：Float[1, 7, 2] name:pred_curves tensor：Float[1, 7, 8] name:foo_out_1 tensor：Float[1, 7, 2] name:foo_out_2 tensor：Float[1, 7, 8] name:weights […]
OpenMMlab exports the yolov3 model and uses onnxruntime and tensorrt for inference
Export onnx file Use script directly import torch from mmdet.apis import init_detector, inference_detector config_file = ‘./configs/yolo/yolov3_mobilenetv2_8xb24-ms-416-300e_coco.py’ checkpoint_file = ‘yolov3_mobilenetv2_mstrain-416_300e_coco_20210718_010823-f68a07b3.pth’ model = init_detector(config_file, checkpoint_file, device=’cpu’) # or device=’cuda:0′ torch.onnx.export(model, (torch.zeros(1, 3, 416, 416),), “yolov3.onnx”, opset_version=11) The exported onnx structure is as follows: The output is the output of three different levels of detection heads. If you […]
Three basic algorithms for sorting with time complexity n^2
Foreword: Bubble sort, selection sort, and insertion sort are all sorting algorithms with a time complexity of n^2. They are also the basis for us to learn other sorting algorithms later. Next, I will explain these three sorting algorithms to you in as much detail as possible. Time and optimization plan, if you have gained […]
Use cdc technology to synchronize data in real time (canal) – monitor local data and synchronize data to the cloud database through MQ
Use cdc technology to synchronize data in real time (canal) – monitor local data and synchronize data to the cloud database through MQ 1. Download the canal package and modify the configuration file conf -> instance.properties under example canal.instance.master.address=192.168.8.211:3306 Change the connection database path canal.instance.dbUsername=root user account to connect to the database canal.instance.dbPassword=123456 User password […]
A completely decoupled time slice polling framework structure
1. The importance of program framework Many people, especially beginners, tend to think about writing bit by bit when writing code. They don’t have an overall plan at the beginning, which leads to more and more messy code later and constant bugs. In the end, the code seems to run without any problems (there may […]
Data structure – time complexity and space complexity
1. Algorithm efficiency 1.1 Complexity of algorithm After the algorithm is written into an executable program, it takes time, resources and space to run. ( Memory ) resource . therefore Measuring the quality of an algorithm, generally Measured from two dimensions: time and space , namely time complexity and space complexity. Time complexity mainly measures […]
[Elementary Data Structure] Time Complexity and Space Complexity of Algorithms
Hello readers! Now I will briefly talk about a basic knowledge point in data structure based on C language: the time complexity and space complexity of the algorithm. I hope it will be helpful to you. Table of Contents 1. What is a data structure? 2. What is an algorithm? 3. Time complexity 3.1 The […]
Algorithm time complexity and space complexity and space complexity
When we usually do math problems, there are simple methods and complex methods for the same problem. And the same goes for our computer programs. When an algorithm is written as an executable program, it requires time resources and space (memory) resources when running. Therefore, measuring the quality of an algorithm is generally measured from […]