我是这样度过每一天
----向死而生-----
ML4T笔记 | 03-02 Regression
01 - Introduction
supervised regression learning or numerical model:
- using data to build a model that predicts a numerical output based on a set of numerical inputs.
Time: 00:00:23
02 - Parametric regression
Parametric regression is a way of building a model where we represent the model with the number of parameters. Example: build a model that will predict how much it will rain today based on changes in barometric pressure.
- if barometric pressure declines -> bad weather or rain.
- And when barometric pressure increases -> good weather coming.
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新爸五年计划 084 “我生气啦”
每天总有这么一两次，儿子把脸色一沉，嘴里开始念叨“我生气啦”，“我生气啦”。那个“啦”字还要拉长音，再拐个弯儿。
这话，他是从姐姐那里学来的。姐姐是从我和妻那里学来的。
儿子还好办，他多数情况下，并不是遇到了什么真的让他难过生气的事情。如果真的有那样的事情发生，才一岁多的他，自然是咧开嘴大哭着找妈妈。
女儿则不同。她会用这句话来当作自己做错事情的借口。
你为什么打妈妈？- 我生气了！
你为什么大声喊叫？ - 我生气了！
而真实的原因，多数时候是她想要奶吃，而妈妈犹豫了一下，要不要给。或者她要让爸爸陪她玩儿某个游戏，爸爸实在太累了，不愿意动弹。
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ML4T笔记 | 03-01 How Machine Learning is used at a hedge fund
01 - Overview
- The focus is on creating a model that can be used to predict future prices for stocks or other assets.
- machine learning provides a suite of tools that support a data-centric way to build predictive models.
Time: 00:00:29
02 - The ML problem
The problem the machine learning solves.
- building a model.
- A model is something that takes in observations like this x here, run it through some sort of process, and provide a y (prediction).
- X can be multidimensional (e.g. Bollinger Bands, PE ratio, and so on).
- Y is typically single-dimension represents the prediction.
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ML4T笔记 | 01-09 Optimizers: How to optimize a portfolio
1 - What is portfolio optimization
- Your final project in this mini-course is to create a portfolio optimizer.
- portfolio optimization： Given a set of assets and a time period, find an allocation of funds to assets that maximize performance.
- performance can be measured by a number of metrics, including cumulative return, volatility or risk, and risk-adjusted return, which is Sharpe ratio.
Time: 00:00:52
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零收件箱原则
如果你对GTD（Getting Things Done)有所耳闻，则你很可能听说过 “零收件箱原则”. 零收件箱原则，是整理电子邮件的原则。目的...
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折返点-1903---感冒快点儿好
周四的时候，妻提到孩子们有点儿流鼻涕。然后我的嗓子就有点儿发紧。 周五下班前，我跟同事说，我感觉不舒服，得早点儿走。他告诉我，已经不早啦，都快下午四点了...
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新爸五年计划 | 083 犟
周末的时候，带着兔子看了兽医。
医生的并没有做什么血检什么，询问了情况，做了一些视查。她认为嘟嘟可能是有些神经症，某种神经萎缩，造成的肌肉萎缩。她的体重变化，就是因为失去了大量的肌肉造成的。跟年龄有关系，但主要还是疾病造成了现在的状况。
现在已经是晚期了，医生说。
于是，拿了一些流食，一些消炎止痛药，回家了。这些都不太可能减缓病程，只是在最后，减轻一下她的痛苦。
到现在看来，虽然有了止疼药和流食，她还是每况愈下。不免让人担心。
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折返点-1902---关于足跟开裂的自省
本周，脚后跟又有开裂。赶快又是润肤露又是凡士林的一通招呼，总算没有让这点儿皮肉小伤影响跑步。但皮肤开裂，总是弄的人很不舒服，又痒又疼的难受劲儿，就别提了。 实在搞不清楚，具体的成因是什么，哪些是我能改变的...
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ML4T笔记 | 01-06 Histograms and scatterplots
01 - Histograms and scatterplots
- One of the most informative ways to consider daily returns is when we compare the returns of one stock with another.
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ML4T笔记 | 01-05 Incomplete data
1 - Introduction
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Historical financial data is monitored and recorded by computer and saved for us to pore over later but there are many ways the data can be faulty.
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In this lesson: how missing data can occur and what we can do about it.
Time: 00:00:27
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