Recent content by SamD

Our brain is a neural network. An artificial neural network is a simulation of the human brain using a computer. Both expert systems and artificial neural networks are examples of artificial intelligence. Artificial intelligence refers to systems which perform processing normally associated with...

For the scenario questions plan to: - tell the markers what you know (define the terms in the question, explain the theory). - always relate everything back to the scenario (even if it doesn't seem obviously related) - provide examples (markers love that) - if it's worth 3 marks then clearly...

I haven't been on this site for a few years, but given the exam is tomorrow I thought I'd check it out. Good luck for tomorrow, now go to bed!

True. I deliberately made it more detailed to differentiate it from the other textbooks. Then the BOS changed the syllabus and none of the other publishers have bothered to update their text, hence mine's now the only one. Mind you some of the other IPT texts (I wont mention names) are at best...

Fistly an MIS is not classified as a DSS. An MIS is used for structured decisions to do with the day-to-running of an organisation. eg. working out how many people will be on leave next week, how many widgets are left in the storeroom, how many widgets should we order given we usually sell 100...

That would take some time... Are you using my textbook? Have a read of the first few pages of the communication chapter - its an overview of all that stuff. You can download a PDF from our website Parramatta Education Centre if you haven't got it. HTH Sam

Online Transaction Processing just means that transactions are performed online Some examples: - Your Mum transfers $20 into your account over the internet. Its a transaction as the money must be debited from her account AND it must be deposited into your account. If one of these fails then...

Agile is a type of iterative development - there are many others... Characteristics of agile development include: -small teams, often including a customer/user representative. -mutli-skilled team members -strong communication (and often social) links between all involved -just in time...

Normalisation is one way (as mentioned above), but in the exam try and come up with some others - with examples too - HSC markers love examples. What about.... Data Integrity Checks - eg. each time a new customer is entered, the user first searches for a customer with the same address or...

The job of neural networks is largely about detecting patterns within the input data. Sets of inputs are processed through the NN to generate outputs based on the patterns determined during learning. HTH Sam

A very bodgy question that was the cause of much concern at the time (both teachers and students). If you read it carefully it actually says In this case there are 11 of these '1' bits which in binary is 1011. Therefore (A) is correct. Checksums are NEVER (apart from this strange question...

This is part of the Decision Support Systems option topic. It deals with how the inference engine part of an expert system ahieves goal and reaches conclusions. Briefly... Backward chaining - the aim is to achieve a particular goal (eg. determine what's wrong with a car). The inference...

Data mining is a type of Decision Support System. In terms of Transaction Processing Systems, data mining often accesses data that was originally collected by a transaction processing system. Commonly the transaction data is restructured/copied to create a data warehouse which is then used for...

I think you are confusing LAN and long distance (Internet) connection speeds... I suspect the 60kbps is talking about a dialup link using a dialup modem over long distances (typically between dialup modem and ISP). Typical phone lines use Cat 3 twisted pair (just one pair is used). This old...

For 10Mbps (10BaseT) and 100Mbps (100BaseT) full-duplex Ethernet running on Cat 5 (or better) just two of the four pairs are used. One pair for sending and the other for recieving. Two of the twisted pairs of wires are not used at all. I think there's another Ethernet standard that permits full...