I want to build a similar post recommendation system that a user sees after performing some activity on the news feed. For example: If he/she spends more time on sports posts, giving him/her sports recommended post so I would like to get help on what kind of dataset do I need to build a post recommendation system that a user likes to see. I am confused on should I build a dataset of my own if yes how can I build these recommendation posts? Thank you in advance!!
Hello and welcome to the forum! I recommend against building a dataset of your own as real world datasets have certain properties (distribution, missing data, noise) which are quite hard to replicate artificially.
You included Kaggle in your tags. Why don't you use it? It looks perfect for the job. Here's a list of options with the #recommender-systems tag.
This one and this one are about films. This other one is about user interactions with a news platform.
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I'm trying to search some guidelines to create my first app for a price list. If I search on Google I find only ready system but I'd like to make something customized. My needs are to import a 3-4000 lines excel sheet for products with different measures and give to customers the possibility to make a quotation with their personal discount and place an order our make only a quotation for logged users. Instead for not logged user to see only product without prices. Then I don't know if it's better to make contents downloadable or to load all contents inside the app. I think it's better to download contents, so I can update prices directly without make them download each time an app update. Then a possibility to show some pop-up with products news, sometimes in a month. I'm yet practice with magento, WordPress and sql queries. I think The best for me is to find some kind of cms, for phone app, if they exist. Cross platform maybe the best. To understand something like wish or geek. I wait for your replies. Thank you guys!
My issue is that at my current job, we have to go to 7 different sites, depending on the carrier, to find out a part number through a model number. Each site allows you to search a database with a model number and if it is found it you can see the part number for it. This really helps us out, but I'm looking for a way to make it more convienient for us. Each site requires a login. How can I search all the sites, sites databases at once or how can I make something, webpage or program, that has a tab for each site and when clicked it takes me right to the search feature of the site. Any suggestions are appreciated. I really need to be pointed in the right direction. I almost forgot, if you know a site or program that does this for hvac part or appliances please let me know!
You won't be able to integrate directly with each site most likely, so you're stuck having to login to each and do your work.
But there is some hope!
Check out Selenium (http://docs.seleniumhq.org/) for automating web tasks. For example, you should be able to "record" yourself logging in and clicking to a page - and then in the future you just run a script and Selenium will do it for you. Should save a few steps.
You'd still need a tab open per site, but it should help.
I have a forum with >400 registered users. It's powered by vBulletin-4.0.4. I want to build up several websites with kohana-3.1, but keep existing forum users too. I will use seperate databases for each application (I want to keep apps as independent as possible).
So my solution is:
step 1. create special app users.mydomain.com where each user can register and update their details (birthdate/email/password). This app will catch all changes and write them to forum database and application databases.
step 2. modify default auth module to handle forum authentication. vBulletin uses algorithm: $hash=MD5(MD5($password)+$salt) for pass hashing.
Am I in the right direction? Is it OK?
Someone has already done this: Kohana vBulletin Bridge. You will need to contact the author of the module as the source code is no longer online. It wont be too difficult to upgrade it to 3 if you get it.
I haven't used vBulletin so I can't give you much advice on the subject, but you're right about the hashing algorithm. You'll also need to make sure your session is read and written as they are in vBulletin.
A quick search of vBulletin SSO to get you started.
I am designing a Point-Of-Sale system for a small shop. The shop just have one Point-Of-Sale but often they are one to three users (sellers) in the shop. Each user have their own user account in the system so they login and logout very often. How should I design the login/logout system in a good way?
For the moment the users don't use passwords, because it takes so long time to type the password each time they login.
The Platform is Windows Vista but I would like to support Windows 7 too. We use Active Directory on the Network. The system is developed in Java/Swing for the moment, but I'm thinking about to change to C#.NET/WPF.
I am thinking about an SmartCard solution, but I don't know if that fits my situation. It would be more secure (which I like) but I don't know if it will be easy to implement and smooth to use, i.e. can I have the POS-system running in the background or started very quickly when the users switch? Are SmartCard solutions very expensive? (My customers are small shops) Is it preferred to use .NET or Java in a SmartCard solution?
What other solutions do I have other than passwords/no passwords/smartcards?
How should I design the login/logout system in a good way?
Is there any good solution using SmartCards for this purpose?
I would like suggested solutions both for C#.NET/WPF and Java/Swing platforms.
I would like suggested solutions both for Active Directory solutions and solutions that only use one user profile in Windows.
How is this problem solved in similar products? I have only seen password-solutions, but they are clumsy.
An interesting solution is to use "Fast User Switching", i.e. the capability to have multiple user sessions open on the same PC. The POS software could be launched through the Startup folder of each seller account and would stay active in each seller session.
I thought that being in a domain (i.e. using Active Directory) disables Fast User Switching, but according to The old new thing, this was true on XP only. I just checked with my Win7 machine at work: it is in a domain but still has the "switch user" menu item.
The main advantage is that if your software is already multi-user aware, you don't need to change it.
I should have made the Fast User Switching check before writing what is below, because this seems to be the simplest solution. Here are other ideas, anyway.
Another solution is what you mention of having a single Windows user but several "virtual users" that your application manages. A smart card is a good way to implement a pseudo-login. In C++, the API allows detecting the removal or insertion of a card, so the application could detect this and read the card after insertion to know who's currently in front of the computer. .NET can easily call this API through P/Invoke; I don't know much of Java, except that JNI could be a solution to call the native API if there is no managed library that publishes this capability.
What should be done is researching the different types of card and how to talk to them, as your app should use a card that does not require a PIN to be accessed (or you are back to the slow login system, except if tying a 4-digit number is not considered too slow).
I've seen restaurants where waiters insert a key into the cash register in order to be identified. I googled "cash registers" but could only find a complete solution package, rather than the components like a key reader.
An almost idiotic question is: how much security do you need ? Does it make sense to have big buttons on the first screen of the app, where people click in order to tell the system who they are ? When they are done, they click on a "Finish" button and the app goes back to the "identify" screen. I've put this at the end because it is so simplistic that it has a low probability of being useful.
I'm not familiar with a broad range of smart card provider solutions, but I know Gemalto has a .Net friendly setup. Most others are geared to Java, but support is widening.
With regards to switching user sessions and your application, it depends on how "heavy" your application is. If your app requires quite a bit of start-up time / resources then you might consider creating the basic application as a service on the machine which can run in the background continuously and then you can load a light-weight UI to interact with the service with each user session (maybe launch via Startup menu).
There is a C# project on CodeProject which provides a framework for interacting with smart card services in windows - might be interesting reading.
I had a chance to work with the Open Source Computer Vision library (OpenCV)
in one of my past projects and its "Face-Recognition" is what you're after. It is written using native code, but can be easily used with Java, .NET, Android, iOS. All you need is a webcam and a button "Switch User" with the onClickListener that will take a picture and compare it with the images of your employees. Advantage? Once the picture's taken, it gets processed in less than 10ms. And as Timores mentioned earlier, once the face is recognised, you simply switch the session. Simple yet effective solution. Good luck!
maybe you want to think about using barcode scanner... probably you already have this device on POS ... my software for bars and restaurants use barcode scanner to recognize users. You have 2 options for using: first, user must log in with own barcode card, then he can use the application ... the second is better, everyone can use application, but to print the receipt user must use barcode card. After then he is responsible for that amount on this receipt.