RAG with local quantized LLM model

While there are many Retrieval Augmented Generation (RAG) post out there, many of them rely on external LLM APIs such as OpenAI or Amazon Bedrock, etc. 

How well do they work with quantized LLM models that can run locally? I got one here, and it works quite well for me.

How I chose Generali home insurance in 2023?

I read through multiple home insurance comparison sites such as MoneySmart and MoneyHero, and articles/sites such as those from 10life, spacious.hk, and even this old article in 2012 from Consumer Council, and still have no clue which insurance to get. There are too many "features'' offered by these insurance companies, and it just muddles the water. What it comes down to is really knowing what I want want out of the home insurance, and it comes down to 2 things:

1. Third-party legal liability protection
2. Insurance for my home content

I went through all the insurance company that offers home insurance: Zurich, FWD, Generali, Blue Cross, Dah Sing, QBE, AIG, Allied World, Prudential, HSBC/AXA, AXA, MSIG, AIA, Pingan, One Degree, Bank of China Group (BOCG), Sompo, Hong Leong and  Allianz, and got their annual premium, third party legal liability protection amount and home content insurance amount and calculated the Legal Liability Insured per $ and Home content insured per dollar. I rank them all in this spreadsheet.

Legal Liability Insured per $

Rank	Company	Rate	Coverage	Insured per dollar
1	AXA/HSBC 2	1680	20,000,000.00	11,904.76
2	Prudential Premier	1360	15,000,000.00	11,029.41
3	Prudential Harmony	990	10,000,000.00	10,101.01
4	One Degree Standard	1025	10,000,000.00	9,756.10
5	Pingan	1066	10,000,000.00	9,380.86
6	Dah Sing Plan C	1280	12,000,000.00	9,375.00
7	Blue Cross Plan B	980	9,000,000.00	9,183.67
8	One Degree Plus	1342	12,000,000.00	8,941.88
9	One Degree Prestige	1690	15,000,000.00	8,875.74
10	Generali	888.89	7,500,000.00	8,437.49

Home Content Insured per $

Rank	Company	Rate	Coverage	Insured per dollar
1	Generali	888.89	1,000,000.00	1,125.00
2	Sompo 2	900	1,000,000.00	1,111.11
3	Prudential Premier	1360	1,500,000.00	1,102.94
4	Sompo 1	1000	1,000,000.00	1,000.00
5	Pingan	1066	1,000,000.00	938.09
6	Dah Sing Plan C	1280	1,200,000.00	937.50
7	AIG Standard	1280	1,000,000.00	781.25
8	One Degree Standard	1025	800,000.00	780.49
9	Blue Cross Plan B	980	750,000.00	765.31
10	Blue Cross Plan A	1580	1,200,000.00	759.49

The AXA/HSBC Plan 2 offer was quite tempting, given its high legal liability total coverage and insured per dollar. This is especially true after reading unverified information from forums such as this one from baby-kingdom where the poster claimed “someone forgot to turn off the water, flood the elevators and have to pay 15 million Hong Kong dollars for damage”. However, the home content coverage is a little low at only HK$600,000, which doesn’t even make it to the top 10 for home content insured per $.

Did someone really pay HK$15 million for damage to the building’s elevator? Hard to say. Doing my own research, I found a couple of news articles that put claims of flood damage to elevator(s) at up to K$1 million for this case (2022) and HK$3.5 million for another case (2019). It is a good idea to take even news articles with a grain of salt these days, so if anyone in the elevator repair industry or home insurance industry knows what a “sensible” amount to insure for, please do share!

At the end of the day, I chose Generali, with annual premium at only HK$888.89, with the HK$7.5 million legal liability coverage (rank #10) and HK$1 million dollar home content coverage (rank #1).

For less than HK$200 extra, Pingan also seems like a decent choice for my situation, with annual premium at HK$1,066, you can HK$10 million legal liability (rank #5) and HK10 million home content (rank $5) insurance coverage.

For an extra few hundred dollars per year, Prudential Premier with annual premium at HK$1,360, with HK$15 million and HK$15 million is also a good choice if I move into a more upscale condo and I own more expensive stuff in my home.

Proluxury PDE001060 dehumidifier will not turn on!

This is the second dehumidifier that won't turn on for me. The first one was a busted tactile switch. I am prettier sure of that because I opened up the dehumidifier to access the circuit board. I was able to short circuit across the switch and the dehumidifier will turn on. First time round, as a spoiled developed-world brat, I just bought another dehumidifier, a Proluxury pde001060 dehumidifier.

This time I also opened up the dehumidifier. Long and behold, another busted tactile switch. I short circuit across the switch pins, and the device turn on.

Took out the circuit board of the dehumidifier.

It actually locked burnt out!

"Not again!?", as my daughter will put it. And as an engineer, this is totally not acceptable, so I go about my journey to fix it. Time for some Googling.

First off, Google Lens. Yup, found images of the switch, but none of the linked sites tell me the model or where to buy it.

Good thing my google-fu is up to snuff. Measure the size of the switch, let's try "6mm tactile switch". 

Is that 5 or 6mm? as I squint to try and red the tape measurer. Good thing digital zoom on phone camera are awesome these days.

Mouser did some excellent SEO, and they are one of the first site to show up. 4 pages worth of 6mm switches. After looking through a few switches, I narrowed it down to the FSM12JH model and it is only HK$1.28! Great! Add to cart, checkout.

Wait a minute, HK$125 for shipping!?

Wait a minute, HK$125 for shipping? Err... That is why Taobao is your friend. CNY 0.5 per switch HK$ 12.31 shipped to Hong Kong. In fact, it was so cheap I am worried that they won't bother with my order, or have some hidden MOQ. I double check with the seller to see whether they are okay to just ship 4 pcs to Hong Kong, and they are okay with that. I end up buy 10pcs, don't know why....

Buy and shipping from Taobao to Hong Kong is so affordable!

Ordered on Sunday 12/12, goods arrived on Friday 12/15. I ordered way more than just the switches, from shops across China, so the shipping took a little longer than if I just ordered the switches. This is expected.

Hohoho! I went a little nuts with the 12/12 discounts.

Busted out by soldering and de-soldering skills.

Fixed!

   

It will be a lot easier to just by a new dehumidifier, but what a waste for just a busted switch. I am glad I gave it a try and managed to fix it.

The infamous Razer laptop battery swelling / bulging

The infamous Razer laptop battery swelling / bulging problem

The infamous Razer laptop battery swelling / bulging. Yes. I got it too. I have own more than 10+ laptop of various brands - Apple, Lenovo, Dell, HP, Gateway, etc., and my first Razer is the only one that I got a swelling/bulging battery problem.

Is it just my luck or razer's quality problem?

Is it a battery quality problem, or just the laptop design will kill any battery?

Swelling battery vs replacement battery

I got a replacement from a TMall Taobao store, which has the most review. I scanned through the reviews and they are look all positive, diverse and genuine. It is definitely not the cheapest, but I do not think going for the cheapest replacement here is a good idea. 

Let's see how long this last and whether I will get a battery swelling problem again.

Smallest Java hello world web application

• Requires no dependencies other the Java runtime itself. 
• Since JDK 11+, you can run the file directly

Withholding tax by country of major markets

Withholding tax by country of major financial markets

Australia	30%
Canada	25%
China (Mainland Incorporated)	10%
China (Offsohore Incorporated)	0%
Hong Kong	0%
Japan	20.42%
Singpaore	0%
Singapore REITs	10%
U.K.	0%
U.K. REITs	20%
U.S.	30%

Source: https://www.spglobal.com/spdji/en/documents/additional-material/withholding-tax-index-values.pdf

Most stock pickers loses to the index? Just buy the index. Does this advice work in Hong Kong?

If you invest in the Hong Kong stock market, Tracker Fund (2800) is one of the bigger and better-known funds. Does just buy the index work?

source: charts created from https://www.tradingview.com/

If you invested in 2800 10 years ago (2011-05-16 to 2021-05-17), in the course of this 10 years, you are looking at about 23% capital appreciation. Assuming inflation at 2% p.a., it barely tracks inflation of ~22%. The good news is there is a dividend, and you would have collected 8.01 HKD per share, and this doesn't look too bad.

source: http://www.aastocks.com/en/stocks/analysis/company-fundamental/dividend-history?symbol=02800

Let's look at trading view says when we click the "adj" - adjust data for dividends, and we are looking at about 70% return.

source: charts created from https://www.tradingview.com/

However, if you look at VTI and DIA in US, you can see 2800 really lacks behind:

• VTI rose 210.92% for the same period
• DIA rose 173.96% for the same period

source: charts created from https://www.tradingview.com/

Although, past performance is not indicative of future results, given this observation, should we bother with investing in the Tracker fund (2800)? Or any Hong Kong index fund / ETFs at all?