I am researching a problem that is pretty unique.
Imagine a roadside assistance company that wants to dynamically route its vehicles. Hence for each packet of new incidents wants to create routes that will satisfy them, according to some constraints (time constraints, road accessibility, vehicle - incident matching).
The company has an heterogeneous fleet of vehicle (motorbikes for easy cases, up to tow trucks for the hard cases) and each incident states it's uniqueness (we know if it wants just fuel, or needs towing).
There is no depot, only the vehicles roaming on the streets.
The objective is to dynamically create routes on the way, having in mind the minimization of time and the total traveled distance.
Have you ever met such a problem? Do you have any idea in which VRP variant it belongs?
I have seen two previous questions but unfortunately they don't fit with my problem.
The respected optaplanner - VRP but with no depot and Does optaplanner out of box support VRP with multiple trips and no depot, which are both open VRPs.
Unfortunately I don't have code right now, as I am still modelling the way I will approach this problem.
I am really sorry for creating a suggestion question and not a real one.
Thank you so much in advance.
It's a rich dynamic/realtime vehicle routing problem. You won't find an exact name for your problem, as when VRPs get too complex they don't fit inside any of the standard categories.
It's clearly a dynamic/realtime problem (the terms are used interchangeably) as you would typically only find out about roadside breakdowns at short notice.
Sometimes you're servicing a broken down car, which would be a single stop (so a vehicle routing problem). Sometimes you're towing a car, which would be a pick-up delivery problem. So you have a mix of both together.
You would want to get to the broken down vehicles ASAP and some would need fixing sooner than others (think a car broken down in a dangerous position on a motorway). You would therefore need soft time windows so you can penalise lateness instead of the standard hard time windows supported in most VRP formulations.
Also for you to be able to scale to larger problems, you need an incremental optimiser that can restart from the previous (possibly now infeasible) solution when new jobs are added, vehicle positions are changed etc. This isn't supported out of the box in the open source solvers I know of.
We developed a commercial engine which does the above. We started off using the jsprit library, which supports mixing single stop and pickup delivery problems together. We later had to replace jsprit due to the amount of code we had to override to get it running happily for realtime problems, however jsprit may still prove a useful starting point for you. We discuss some of the early technical obstacles we had to overcome in getting jsprit to handle realtime problems in this white paper.
I'm creating a contract API solution to keep items in sync between multiple tenants. Is there any way to track the changes to InventoryCD? In this case one Franchiser would like to update items in their 6 franchisees. It's easy for me to find the records that changed, but harder to know when the CD has changed (importantly what it chagned FROM). Certainly I could write customization to do it, but I thought maybe Acumatica has some option inbuilt.
Ideally I'd like to have a log of the changes with old and new CD. It's hosted so I don't think I can make it happen with DB Triggers (which is how pre-Acumatica me would have handled id)
Thanks in advance.
It depends on the Acumatica version. But have you tried looking at Business Events? I believe there is the ability to access the old and previous values.
Also look at Acumatica's Audit history capabilities but be careful to only turn on the fields you need to track as the DB can grow very large if you turn on all fields on the Stock Item screen or for any screen.
As of late, I have encountered a problem with my view index being rebuilt all the time and users are having massive issues with this particular view.
I figured it was due to #Date in my selection formula aswell as one of my column formulas. This way the selection formula would be different every second that passes.
So I figured, since I dont need hours/minutes/seconds in my formulas, I would use #Today. This worked out well for 2-3 days and after that the same problem occured again.
So since the problem is back again, I'm not quite sure if that even causes the problem. When this particular view is open, I have issues in every tab that's open in notes, not only this specific database.
Is this a common/known issue? What can I do to avoid this problem?
Yes, it's a common issue that has been well known since the very early days of Notes more than 20 years ago.
#Date is not a problem on its own. #Now and #Today are both problems.
Using #TextToTime("Today") was a popular workaround that was discovered early on. This hid the problem from the indexer so the server failed to realize that the view was out of date. It doesn't solve the underlying problem, though, which is that the view is trying to do something that views simply aren't designed to do. Views are intended to be static, requiring update only when documents change. Introducing time into a selection or column formula makes them dynamic, which kills that presumption and is a major source of performance problems. Using this workaround requires that the view be fully rebuilt every night. You can do that by setting the view index options to "Manual", and setting up a program document to run an updall command with the -T option for the specific database and view once per night. Note that if your users are spread out across timezones, you'll have to pick one specific time as your standard, and if you have servers spread out across timezones you're going to have a lot of fun figuring out how to make them all show the same documents in the view at all times - but that's common to pretty much all approaches to the problem.
See this IBM Technote for a description of several other options that people have used over the years, with their pros and cons. Also see this article by Andre Guirard, which covers date/time issues in great detail.
I would add that the agent-and-folder solution that they describe in the Technote was generally my preferred approach, but it does have an additional disadvantage that they don't mention: it can eventually lead to an obscure situation where the server throws an error "Folder is larger than supported". This error actually has nothing to do with the size of the folder in documents; it refers to fragmentation of internal structures that occurs as large numbers of documents are moved in and out of the folder over time. It could only be fixed by deleting and re-creating the folder, which you can do in your agent code. I believe this problem may be fixed in more recent versions of Domino, but it caused me a lot of grief back in the Notes 6 and 7 timeframes.
I am using the Excel Add-in to look at revision history. I would like to locate the information (User, Date, Time, etc.) when an Iteration in Rally was "removed". I am able to obtain this but get too many rows.
I want to know when an Iteration is removed from a project.
I don't want to know when the Iteration value is changed on a User Story.
Right now I am getting rows relating to both situations.
Any hints?
Regards,
Jim
Unfortunately there is not a specific single place to look for this, nor a single Webservices query that you can run to provide this information. Your best bet is to find a Work Product (User Story, Defect, etc.) that was scheduled into the Iteration, and examine its Revision History. There will be an entry similar to:
ITERATION removed [Iteration 3] 2013-May-15 12:19:43 PM America/Denver Mark W
That includes Date/Time and User that performed the delete.
This likely precludes Excel being the tool of choice to do this query as it would require you to query and parse many, many Revision History entries throughout your User Stories of interest.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
What should a good BugTracking tool be capable of?
Although there is a large set of features that a bug tracker can have I feel like it is a little overkill and was considering rolling out my own solution. With that being said I didn't want to remove any core functionality that might be used frequently with existing solutions.
The ones I can think of so far:
- creating bugs
- assigning bugs
- closing bugs
- adding description to the bug
Thanks!
Communication between the developer and the user.
Ability for the user to assign certain bits of information such as severity (how much that bug relates to them).
Ability for the developer to override that priority and, if possible, give a reason.
Ability to assign tasks to a developer.
Ability to sort between bug, enhancement, and feature request. The difference between an enhancement and feature request is very subtle but VERY important.
Ability to attach files (such as screen shots)
Ability to have custom fields (such as being able to select which OS, which service pack level, application version, etc).
Ability to have custom user profiles which also give detailed information about their hardware. It's also nice to be able to have the users phone number (if they are on your LAN) so you can ask questions, if needed.
Privacy. Some items, such as security exploits or information that deals with financial information, will need to be kept secret. Even OSS does this from time to time until they can get a patch ready. Everyone has their own rules.
Ability to show the changes between revisions so you can email out a Change Log so users know what you have and have not done.
Reminders about which items are left undone and are assigned to you / unassigned at all.
That's all I can think of...
A good search engine.
It's amazing how many bug tracking products that cost thousands of dollars get this horribly wrong.
Without a really decent search your bug tracking is more like a "bug logging" - log and forget - system which is pretty much useless.
create a bug
close a bug
this is sufficient for closure over the life-cycle of a 'bug' entity. Whether it is enough features for your purpose is another matter.
Take a look at the features of Mantis, choose the features that you need, calculate how long it would take you to write them, and then spend your time on something more useful unless you absolutely have to create your own. ;-)
For most systems like a bug tracking one, it's usually not the creation or editing of the data that makes the system useful. It all comes down to how easily you can navigate through the information to 'add-value' on top of just collecting the data.
Think about the people who will use the system, the programmers, managers, etc. For each group of people, what type of information will make it worth their while to come back to the system over and over again. How can you make it easier for them to get this information?
Collecting information is easy, adding value to it is the hard part.
Paul.
A bug tracker is nothing more than a list of things that need to be done.
It can be as simple as a text file in the software's directory to a fully fledged bug tracker with hundreds of users.
Start with what you need to work with, then expand as needed.
Use Jira, you'll be in good hands.
Here are some important features:
Assign priority to bug (e.g. critical, major, medium, minor, trivial)
Assign bug to a specific release in which it will be fixed
Watcher functionality (so you can be e-mailed when the status changes)
Workflow (i.e. who is working on it, what's the status)
Categorization, Prioritization, and Standardization.
And an easy way to query it so that you can reap the rewards of your hard work on the above three.
Also, make sure whatever you do is extensible! We always decide to add/edit our bug templates during the project depending on needs/fires.
There are a lot of great solutions out there, you probably don't need to roll your own.. But either way you're going to have to make the same decisions. We use a solution that allows us to roll our own templates, so at the beginning of every project we revisit this same discussion.
FWIW: When we rolled our own request tracking system, we built it around procmail and our existing internal web authentication system because we wanted it to be extremely unobtrusive to use: we just send e-mails to the developers (using group aliases if we want) and add a "[t]" to the subject to open a ticket. The recipients get a modified e-mail with the original request and an additional link to the web page that displays the ticket and allows them to close it with 1 mouse click. So the most common tasks are performed through the e-mail client (opening, requesting more information, replying, ...), although there is also a simple web interface for searching etc.
It took only a few hours to write and after more than 34000 request tickets in 7 years or so, I guess it's OK to claim that it has only the essential core features:
create a ticket (by e-mail with marked subject)
close a ticket (clicking on the link in the e-mail, then clicking on "done")
all communication goes over e-mail, not through a web interface(!)
people who were recipients or sender of the original e-mail (opening ticket) are notified about closed tickets ("Subject: <old subject> closed by <someone>" + link to ticket in the body, enough information for most people so they don't have to go look which ticket/bug that was etc.)
a simple web interface provides a search function for own/open/sent/team tickets
Notable absent features that might be needed for a bigger development team / more intense software development:
flexible status for the tickets (dupe, wontfix, reopened etc.)
priorities
reassigning tickets explicitly (in our dev team, the e-mail just gets resent to the unlucky guy who has to do it)
adding comments to the ticket that don't get sent to everyone
assigning the bug to a particular version of the software
YMMV, but it has worked very well for us so far, both for bugs and for simple requests that the sender wants to keep track of.
Define bug.
Thinking about that will most likely make you realize that you're gonna spend a lot of time "rolling your own".
This might be a little beyond what you had in mind, but for me, integration with source control is a must-have. To be able to view the diffs between versions associated with a bug/issue is very handy.
Please please please don;t spend much time "rolling your own". Your time is better spent researching and learning to use real tracking systems.
Some to look at
Trac, Bugzilla and FogBugz. The last one has free hosted solution for small (one or two man shops?) companies.
SO has lots of threads about this topic.
Try not to roll your own unless it is just a word doc or a spreadsheet. Any time you spend making your own is a TOTAL waste.
EDIT
Since you won't be dissuaded, then I'll maybe add some things others have not mentioned.
You need reporting functionality - users need to be able to run queries and they should be able to select the fields they want to "view".
Workflow/lifecycle of a defect is also a good feature. (basically a state machine of the states the defect will go through. ) In fact, this is a useful exercise for you to define all your use cases and functionality. Given that you are in college and did not start out as aa CS major, I doubt you will come up with many on your own. Take some time to browse the feature lists and demos of existing products.
Ability for emails to be sent to various interested parties.
Anonymous users able to see a SPECIFIC defect that they entered
Different access levels and authorities (admin, manager, developer, tester, end-user)
Our bug tracking system is one of the two essential links between my company and our customers ("live" product reviews where existing customers are encouraged to suggest improvements and user interface tweaks being the other).
A bug tracking system must, first and foremost, encourage trackable "dialogs" with your customers. It must answer the question "Have you fixed the problem (defined broadly) that I have been having yet?"
It must have (in no particular order):
A short description of the problem or feature request (the title)
Room for an extended description
The ability to attach files/images (screenshots)
The ability to prioritize bugs/features
The ability to categorize entries as bugs, features, inquiry, etc.
The ability to assign bugs/features to areas (UI, database, documentation, etc.)
he ability to assign bugs/features to products (we track bugs on five products)
The ability to assign bugs/features to releases ("to be fixed in version 5.1")
The ability to assign bugs/features to people (developers/writers)
The ability to assign bugs/features to customers (reporters)
The ability to re-assign to a different person (developer)
The ability to Resolve bugs/features (mark them as finished and ready for testing)
The ability to mark resolution status (fixed, won't fix, can't reproduce, etc.)
The ability to Close bugs/features (take them off list after resolution & testing)
The ability to Reopen bugs/features (restore to "Open" if testing fails)
The ability to inform customers the bug has been resolved (e.g. via email)
Date and Time stamp on every step (Open, Resolve, Close, Re-open)
The ability to report on the number of Open bugs! (how close to release are we?)
The ability to show bug reports versus resolutions
The ability to search on bugs/features by date, priority, product, person, etc.
The ability to list and sort bugs for easy scanning!
Those are the things that we typically use in our system (FogBugz). While this may seem like a long list, we really do use every feature that I've listed here!