But I don't know like a hidden camera. What I need is a third eye ... 7. Stray Kids - 그림자도 빛이 있어야 존재 (Behind The Light) (English translation).

It seems like the current product recommendations are driven by data collected from customer orders. With each order, there’s a new association between the products ordered, which is recorded. When customers view product pages, they can get recommendations based on how many other customers bought the current product alongside different products.

At the onset, this sounds to me like a graph problem. We have customers who log on to the site and buy products. Before that, when they look at a product or add it to the cart, we can show recommendations in the form of “Customers who bought X also bought Y.” The site has this today, in that the recommendations service does exactly this: It returns the top four additional products that are frequently purchased together.

To illustrate this evolution, let’s follow a hypothetical contractor who was hired to help implement AI/ML solutions at a big-box retailer. This is the first in a series of articles that will detail important aspects of the journey to AI/ML.

2024922 — The best polarizing filters · 1. Hoya HD Nano Mk II CIR-PL · 2. Hoya Fusion One Next Cir-PL · 3. LEE Elements Circular Polarizer · 4. Cokin NX ...

DataStax serves production-level AI applications with a vector database fueled by real-time, real-life customer and streaming data.

It’s the first day at BigBoxCo on the “Infrastructure” team. After working through the obligatory human resources activities, I received my contractor badge and made my way over to my new workspace. After meeting the team, I was told that we have a meeting with the “Recommendations’’ team this morning. My system access isn’t quite working yet, so hopefully IT will get that squared away while we’re in the meeting.

In the meeting room, it’s just a few of us: my manager and two other engineers from my new team, and one engineer from the Recommendations team. We start off with some introductions, and then move on to discuss an issue from the week prior. Evidently, there was some kind of overnight batch failure last week, and they’re still feeling the effects of that.

Dark-field Microscope Definition ... Ultramicroscope. ... A microscope in which an object is illuminated only from the sides so that it appears bright against a ...

The journey to implementing artificial intelligence and machine learning solutions requires solving a lot of common challenges that routinely crop up in digital systems: updating legacy systems, eliminating batch processes and using innovative technologies that are grounded in AI/ML to improve the customer experience in ways that seemed like science fiction just a few years ago.

Illumination Logo (2023). 11 Favourites

Some additional heuristic filters may be necessary to add as well, like a “do not recommend” list. This is because there are some products that our customers will buy either once or infrequently, and recommending them will only take space away from other products that they are much more likely to buy on impulse. For example, recommending a purchase of something from our appliance division such as a washing machine is not likely to yield an “impulse buy.”

The product recommendations are served to users on bigboxco.com via a microservice layer in the cloud. The microservice layer uses a local (cloud) data center deployment of Apache Cassandra to serve up the results.

The 14052 edge-lit panel light features LEDs on the frame's edge that channel light for uniform distribution without hot spots, flicker or glare.

DS Richardson · 2021 · 119 — Filtering to improve contrast. Microscopy data is inherently noisy and this ... Solvent-based clearing methods have been used to clear human embryos and foetuses ...

But we’d have to have some way to “rank” the products, because the mapping of one product to every other purchased at the same time by any of our 200 million customers is going to get big, fast. So we can rank them by the number of times they appear in an order. A graph of this system might look something like what is shown below in Figure 1.

Jul 25, 2020 — Our engineers can optimize your industrial control system with our top line of lighting and illumination solutions for industrial ...

In this way, the new recommendation data is constantly being kept up to date. Also, all of the infrastructure assets described above are located in the local data center. Therefore, the process of pulling product relationships from an order, sending them through a Pulsar topic and processing them into recommendations stored in Cassandra happens in less than a second. With this simple data model, Cassandra is capable of serving the requested recommendations in single-digit milliseconds.

We can then take the top four results and put them into the product recommendations table, ready for the recommendation service to query by ‘product_id’:

We’ll want to be sure to examine how our data is being written to our Cassandra tables in the long term. This way we can get ahead of potential problems related to things like unbound row growth and in-place updates.

As for the latter, our Pulsar consumer will write to a Cassandra table (shown in Figure 2) designed simply to hold entries for each product in the order. The product then has a row for all of the other products from that and other orders:

How the results are collected and served, though, is a different story altogether. Essentially, the results of associations between products (purchased together) are compiled during a MapReduce job. This is the batch process which failed last week. While this batch process has never been fast, it has become slower and more brittle over time. In fact, sometimes the process takes two or even three days to run.

The other problem, I begin to explain, is that the dataset driving each recommendation is almost always a couple of days old. While this might not be a big deal in the grand scheme of things, if the recommendation data could be made to be more up to date, it would benefit the short-term promotions that marketing runs.

Fortunately, we did come up with a way to augment the existing, sluggish batch process using Pulsar to feed the cart-add events to be processed in real time. Once we get a feel for how this system performs in the long run, we should consider shutting down the legacy batch process. The PE acknowledged that we made good progress with the new solution, and, better yet, that we have also begun to lay the groundwork to eliminate some technical debt. In the end, everyone feels good about that.

Another future improvement would be to implement a real-time AI/ML platform like Kaskada to handle both the product relationship streaming and to serve the recommendation data to the service directly.

After modeling this out and running it on our graph database with real volumes of data, I quickly realized that this isn’t going to work. The traversal from one product to nearby customers to their products and computing the products that appear most takes somewhere in the neighborhood of 10 seconds. Essentially, we’ve “punted” on the two-day batch problem, to have each lookup putting the traversal latency precisely where we don’t want it: in front of the customer.

T-LED Edge Light (5CCT) ... The T-Edge Lights with 5CCT represent a forward-thinking approach to lighting, suitable for a range of environments from office spaces ...

It sounds like that batch process has been in place for about 10 years. The engineer who designed it has moved on, not many people in the organization really understand it, and nobody wants to touch it.

But perhaps that graph model isn’t too far off from what we need to do here? In fact, the approach described above is a machine learning (ML) technique known as “collaborative filtering.” Essentially, collaborative filtering is an approach that examines the similarity of certain data objects based on activity with other users, and it enables us to make predictions based on that data. In our case, we will be implicitly collecting cart/order data from our customer base, and we will use it to make better product recommendations to increase online sales.

First of all, let’s look at data collection. Adding an extra service call to the shopping “place order” function isn’t too big of a deal. In fact, it already exists; it’s just that data gets stored in a database and processed later. Make no mistake: We still want to include the batch processing. But we’ll also want to process that cart data in real time, so we can feed it right back into the online data set and use it immediately afterward.

Light diffusion refers to the process by which light is scattered or spread out in various directions as it interacts with a medium or material. Unlike direct ...

DataStax provides the real-time vector data tools that generative AI apps need, with seamless integration with developers' stacks of choice.

We’ll start out by putting in an event streaming solution like Apache Pulsar. That way, all new cart activity is put on a Pulsar topic, where it is consumed and sent to both the underlying batch database as well as to help train our real-time ML model.

NEEWER offers a variety of ring lights, including LED, RGB, and makeup ring lights. These professional ring lights are lightweight, portable, and ideal for ...

After the meeting, I check my computer and it looks like I can finally log in. As I’m looking around, our principal engineer (PE) comes by and introduces himself. I tell him about the meeting with the Recommendations team, and he gives me a little more of the history behind the Recommendation service.