Problem statement: Imagine Google Maps wants to launch in South Korea and needs to decide between three local vendors providing map data. How will you as a Product Manager help your VP products make this decision?
To scope out the problem let’s start with a couple of clarifying questions.
Me: I assume we are trying to launch for the first time in South Korea, right? If yes, why now? The reason I ask this is because if we have tried it in the past, I can build on those learnings.
Interviewer: Ya this is the first time. It just fits our strategy right now to launch there.
Me: We have to make a choice between three vendors, were there only three or have we narrowed it down to three from a bigger set?
Interviewer: These are the top 3 market leaders who even have the kind of data we need for Google Maps. There are a few smaller vendors but they can’t seem to fulfill a few legal and scale requirements.
Me: Great, thanks for clarifying. Now that I have these answers in place, I’d like to start with what Google Maps does and then evaluate these vendors on a few parameters and finally come up with how we will validate the data sets. Sounds good?
Interviewer: Ya.
So Google Maps is a product that helps people explore places and find directions from point A to point B. Customers trust Google to provide all of the information accurately.
So here are a few parameters that I’d like to start with:
Now after considering all these factors we also need to validate the data/claims made by the vendors. For this, let’s look at the use-cases for Google Maps.
There are two broad use-cases:
and the two metrics that matter are:
Therefore, precision and recall are two important factors to consider for data quality.
We can do an A/B test between the vendors where users will be split in 3 groups and each will use different vendor data to find places and directions. The users will need to input their feedback about getting the right search result and reaching the right destination in the stipulated time that will lead up to a final score. The dimensions of rural vs urban, different modes of transport will also have to be tested to see the accuracy of results in all use cases. This experiment will have to run till we reach statistically significant results.
We can also use a golden data set (data that we know is true) to validate each vendor data against it.
To summarize this, people trust Google for the information it provides and therefore that is the most important factor while making trade-offs and selecting a vendor. There are several factors outlined above that contribute towards the decision, some weighing heavier than the other.
Problem statement: Imagine Google Maps wants to launch in South Korea and needs to decide between three local vendors providing map data. How will you as a Product Manager help your VP products make this decision?
To scope out the problem let’s start with a couple of clarifying questions.
Me: I assume we are trying to launch for the first time in South Korea, right? If yes, why now? The reason I ask this is because if we have tried it in the past, I can build on those learnings.
Interviewer: Ya this is the first time. It just fits our strategy right now to launch there.
Me: We have to make a choice between three vendors, were there only three or have we narrowed it down to three from a bigger set?
Interviewer: These are the top 3 market leaders who even have the kind of data we need for Google Maps. There are a few smaller vendors but they can’t seem to fulfill a few legal and scale requirements.
Me: Great, thanks for clarifying. Now that I have these answers in place, I’d like to start with what Google Maps does and then evaluate these vendors on a few parameters and finally come up with how we will validate the data sets. Sounds good?
Interviewer: Ya.
So Google Maps is a product that helps people explore places and find directions from point A to point B. Customers trust Google to provide all of the information accurately.
So here are a few parameters that I’d like to start with:
Now after considering all these factors we also need to validate the data/claims made by the vendors. For this, let’s look at the use-cases for Google Maps.
There are two broad use-cases:
and the two metrics that matter are:
Therefore, precision and recall are two important factors to consider for data quality.
We can do an A/B test between the vendors where users will be split in 3 groups and each will use different vendor data to find places and directions. The users will need to input their feedback about getting the right search result and reaching the right destination in the stipulated time that will lead up to a final score. The dimensions of rural vs urban, different modes of transport will also have to be tested to see the accuracy of results in all use cases. This experiment will have to run till we reach statistically significant results.
We can also use a golden data set (data that we know is true) to validate each vendor data against it.
To summarize this, people trust Google for the information it provides and therefore that is the most important factor while making trade-offs and selecting a vendor. There are several factors outlined above that contribute towards the decision, some weighing heavier than the other.