ADR (American Depository Receipts)
ADS (American Depository Share)
Financial Market Modelling
Stock market is a game market in which asset re-allocation happens everytime. It is interesting that stock market functions both as a place of capital investment and financial arbitrage. Initial share offering (IPO) pumps money into the market. Stock trading is an exchange between corporation and the investors. Stock trading between investors does not affect the balance sheet of the corporation.
"Money inside the market" refers to the overal valuation of the stocks in the market. It is the circulation of currency in the market. The circulation of currency happens together with the circulation of stocks.
There are many historial patterns of the market both in long-term and short-term, paired with economy patterns.
Asset valuation is a subjective, opinion based process substantially affected by human bias. Investor irrelationality is the basis of stock market arbitrage.
The flucation of stock prices is directly caused by trading orders, which is caused by the following two factors (independent of each other, but may function jointly to determine the bid/ask price):
1. The news of the corporation (fundamentals of the company)
2. The bid/ask of other market participant (the movement of other players)
Stock market has two functions, asset valuation and medium of exchange.
Unmatched ask price (monetary unit in currency in exchange of stock) is always higher than bid price, the difference between ask price and bid price is the bid-ask spread.
Supposedly, the bid-ask matching system will execute a trade when the price of sell order is equal or lower than a buy order. The execution price will be the price of the sell order, as it satisfies the monetary requirement for such trade, meanwhile potentionally saves money for the buyer.
The executation price will always be the ask price.
how to deal with situations when team members are not qualified enough to do the job on schedule, is a problem faced by many mangers in technology field. It is not without budget to hire qualified developer, but not enough prospective canadaicates to interview with. The technology industry is experiencing dramatic shortage in skiled manpower.
fluid intelligence and crystallized intelligence
Algorithmic Trading / Automated Trading
Ubuntu 14.04.2 LTS Kernel: Linux 3.13.0-52-generic
GCC version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
Version: 1.5.2 with Java 1.8.0_40
Java 1.8.0_40, JRE(Build 1.8.0_40-b25), JVM (64bit, build 25.40-b25, mixed mode)
tf.InteractiveSession() creates a default session that can be used without explictly called in a IPython environment
a = tf.constant(1)
Regular session needs to be run within a python context or through session object
a = tf.constant(1)
sess = tf.Session()
a = tf.constant(1)
This function is used to add bias to the input tensor (element-wise addition between "bias" vector and the feature vector)
It should be noted that the bias added here is completed different from the normal concept of adding a bias to the hidden unit (summed weight before activation)
The run function of tf.Session provides a interface to execute provided TF operations and evaluate Tensors.
Continuous features can be feed into the first hidden layer of the neural network directly. Discrete features are recommended to go through an embedding layer.
This API accepts a [batch_size, doc_length] tensor of type "int32" or "int64"
This API is used to loopup an embedding using ID.
Categorial Label ---> Ordinal ID ---> One-hot Embedding ----> Dense Embedding
The life quality of western countries is far better than that of China in terms of economical, environmental and social conditions. I found myself increasingly believe in western cultures and values and that is the primary driving force of my immigration thoughts. I need to improve my language skill as well as professional experiences to get ready for the oppertunity. Meanwhile, I need to take it very carefully to examine this thought to confirm it is a good fit for me and my family.
I need a carefully planning to merge my immigration effort with the long-term paradigm shift of my family earning, that is, to shift from work-based earning to asset-based earning. (Asset here is something that can generate revenue without extra mental/physical labor)