Analytics Strategist

May 20, 2006

If you say ROI one more time, I will spank you

Filed under: Business — Tags: — Huayin Wang @ 11:57 am

afterall, ROI is nothing more a profitability measure.

The evil of ROI is that it is replacing Decision Sceince, it gives all the idiots an excuse for pretending to be able to make good decision without knowing what is good — well,  at least in some cases.

Never mind.

May 19, 2006

No free lunch theorem

Filed under: business strategy, Datarology, Random Thoughts, Uncategorized — Tags: , — Huayin Wang @ 2:06 pm

There are many forms of NFL theorem. I particularly like the one when applied to optimization/search algorithm. In one version, it can be stated as ” all algorithms that search for an extremum of a cost function perform exactly the same, when averaged over all possible cost functions. In particular, if algorithm A outperforms algorithm B on some cost functions, then loosely speaking there must exist exactly as many other functions where B outperforms A.” [Wolpert and Macready (1995)], see also No Free Lunch Theorem

It is a humbling experience when meditating on it, to be reminded of the importance of contextual knowledge of the problem.

May 18, 2006

the source of all evil/misery is

Filed under: Random Thoughts — Tags: — Huayin Wang @ 6:10 pm

the lack of wisdom

sale tips

Filed under: Business, Random Thoughts — Tags: — Huayin Wang @ 3:35 pm

I have never been a saleman in my whole life, even for a day.

– in random order …

* no rush in presentation
* being flashy is less important then being helpful
* no bs, particularly when intellectually challenged
* honesty is your best friend

– selling is a process of finding/gaining an advocate on the client side.

May 16, 2006

google search trends

Filed under: Advertising, Datarology, Web Analytics — Tags: — Huayin Wang @ 9:35 pm

Google's tool for viewing trends of search:

You can do comparison too. Here's what I tried:

republican, democrat (and democrat, republican)

regression model,decision tree,neural networks,support vector machine

response model, risk model, predictive model


harvard, yale, stanford

china,india (within US, Germany, United Kingdom)


data mining, statistical analysis, analytics

May 15, 2006

HBR is great – well at least sometime!

Filed under: Business — Tags: , — Huayin Wang @ 8:57 pm

I have never read anything like it before, and well, that’s probably because I do not read much either. It is thought stimulating, or I should say sometimes thought provoking.

I am refering to Harvard Business Review.

May 11, 2006

The Coming of Age of Datarologist

Filed under: Datarology — Tags: , — Huayin Wang @ 3:22 pm

The name Datarologist was born quietly, with no fanfair, announcement or celebration.
Before we have datarologist, it was called many names: statistician, data analyst, data miner, modeler, etc. and the art of trade is called similarly: statistics, data mining, pattern recognization, artificial intelligence, informatics …

The common part that they all share isn’t incidental. On the contrary, the flourish of all of the different fields are pretty much driven by This common, shared element: the skills, the knowledge, the art of trade that able to read relevant insights from data.

子曰: “名不正则言不顺;言不顺则事不成”
(“If names be not correct, language is not in accordance with the truth of things. If language be not in accordance with the truth of things, affairs cannot be carried on to success.” — Analects by Confucius, Chapter 13 )

I smile when reading job reqirement on KDD website. The titles are so varied while the skills are so similar: ) I often felt the pain of the writers. They could have just write: Opening position for a level 5 datarologist!

Create a free website or blog at