A quantitative contract refers to a specific objective or task that can be measured clearly. According to different situations, it is manifested in the number, specific statistics, range measurement, time length, etc. The so-called quantization is to discretize the amplitude of the instantaneous value obtained through sampling, that is, to use a set of specified levels to express the instantaneous sampling value with the closest level value. The sampled image is only spatially dispersed into an array of pixels (samples). The gray value of each sample is a continuous variable with infinite values. It must be converted into a finite number of discrete values and given different codewords to truly become a digital image. This transformation is called quantification.本文由系统开发唯(18028578624) 编辑整理。
What are the types of quantitative trading systems? There are many kinds of quantitative trading systems, including cross platform brick moving, trend trading, hedging trading, etc.
- Cross platform brick moving means that when the price difference between different target platforms reaches a certain amount, they sell on the platform with high price and buy on the platform with low price.
- Trend trading will be more complicated. It sends sell and buy signals according to the trend indicators.
- Hedging refers to two transactions related to the market, with opposite trading directions, equal quantity and profit and loss offsetting at the same time, so as to achieve the effect of hedging risks. Characteristics of quantitative transaction quantitative transaction is a relatively new concept, and its most distinctive feature is the use of models.
量化交易具有以下几个方面的特点：
1、纪律性。根据模型的运行结果进行决策，而不是凭感觉。纪律性既可以克制人性中贪婪、恐惧和侥幸心理等弱点，也可以克服认知偏差，且可跟踪。
2、系统性。具体表现为“三多”。一是多层次，包括在大类资产配置、行业选择、精选具体资产三个层次上都有模型；二是多角度，定量投资的核心思想包括宏观周期、市场结构、估值、成长、盈利质量、分析师盈利预测、市场情绪等多个角度；三是多数据，即对海量数据的处理。
3、套利思想。定量投资通过全面、系统性的扫描捕捉错误定价、错误估值带来的机会，从而发现估值洼地，并通过买入低估资产、卖出高估资产而获利。
4、概率取胜。一是定量投资不断从历史数据中挖掘有望重复的规律并加以利用；二是依靠组合资产取胜，而不是单个资产取胜。
区块链在Web3.0中提供了两大核心能力：
更公平更开放的参与方式，也就是组织形式上的开放性。
资产按合约结算且可靠地无障碍地流通。
Web3.0的几个特点正是靠区块链实现。所以，区块链对Web3.0至关重要。
区块链本质上是一个去中心化的分布式账本数据库。如果创建一个网络，所有银行和用户都在这个网络中，没有一个中心系统去维护里面的账本，那么就会出现，在这个网络中账本里面所有最新内容所有银行和用户都知道的情况。而这个账本就会由这个网络中的所有人维护，用户也可掌握个人数据的使用权和所有权，这也就解决了Web2.0中存在的一些不安全问题，成了Web3.0的一个特点。
