Complete Bank Automaton

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فهرست عناوین اصلی در این پاورپوینت

● Finite Automata
● Informal Example
● Bank Automata
● Ignoring Actions
● Complete Bank Automaton
● Entire System as Automaton
● Product Automaton
● Simple Example – 1 way door
● One Way Door
● Formal Definition of a Finite Automaton
● One Way Door – Formal Notation
● Exercise
● Formal Definition of Computation
● DFA Example
● Aside: Type Errors
● DFA Exercise
● Marble Rolling Game
● Marble Game Notation
● Messy Marble DFA
● Marble DFA – Table Format
● Regular Operations
● Algebra for Languages
● Closure Properties of Regular Languages
● Nondeterministic Finite Automata
● NFA Example
● Formal Definition of an NFA
● Previous NFA in Formal Notation
● NFA Example
● NFA Exercise
● Formal Definition of an NFA
● Equivalence of DFA’s and NFA’s
● NFA to DFA : Subset Construction
● Subset Construction Example (1)
● Subset Construction (2)
● NFA to DFA Exercises
● Corollary
● Epsilon Transitions
● Formal Notation – Epsilon Transition
● Epsilon NFA Example
● Epsilon Closure
● Epsilon NFA Exercise
● Eliminating Epsilon Transitions
● Epsilon Elimination Example
● Epsilon Elimination Exercise

نوع زبان: انگلیسی حجم: 0.23 مگا بایت
نوع فایل: اسلاید پاورپوینت تعداد اسلایدها: 48 صفحه
سطح مطلب: نامشخص پسوند فایل: ppt
گروه موضوعی: زمان استخراج مطلب: 2019/05/15 10:54:04

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عبارات مهم استفاده شده در این مطلب

عبارات مهم استفاده شده در این مطلب

., state, automaton, bank, input, q, store, receive, action, product, pad, dfa,

توجه: این مطلب در تاریخ 2019/05/15 10:54:04 به صورت خودکار از فضای وب آشکار توسط موتور جستجوی پاورپوینت جمع آوری شده است و در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. این مطلب از وب سایت زیر استخراج شده است و مسئولیت انتشار آن با منبع اصلی است.

http://math.uaa.alaska.edu/~afkjm/cs351/handouts/finite-automata.ppt

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عبارات پرتکرار و مهم در این اسلاید عبارتند از: ., state, automaton, bank, input, q, store, receive, action, product, pad, dfa,

مشاهده محتوای متنیِ این اسلاید ppt

مشاهده محتوای متنیِ این اسلاید ppt

finite automata finite automata two types – both describe what are called regular languages deterministic dfa – there is a fixed number of states and we can only be in one state at a time nondeterministic nfa –there is a fixed number of states but we can be in multiple states at one time while nfa’s are more expressive than dfa’s we will see that adding nondeterminism does not let us define any language that cannot be defined by a dfa. one way to think of this is we might write a program using a nfa but then when it is compiled we turn the nfa into an equivalent dfa. informal example customer shopping at a store with an electronic transaction with the bank the customer may pay the e money or cancel the e money at any time. the store may ship goods and redeem the electronic money with the bank. the bank may transfer any redeemed money to a different party say the store. can model this problem with three automata bank automata actions in bold are initiated by the entity. otherwise the actions are initiated by someone else and received by the specified automata ignoring actions the automata only describes actions of interest to be more precise with a dfa deterministic finite automaton we should specify arcs for all possible inputs. e.g. what should the customer automaton do if it receives a redeem what should the bank do if it is in state ۲ and receives a redeem the typical behavior if we receive an unspecified action is for the automaton to die. the automaton enters no state at all and further action by the automaton would be ignored. the best method though is to specify a state for all behaviors as indicated as follows for the bank automaton. complete bank automaton ignores other actions that may be received entire system as automaton when there are multiple automata for a system it is useful to incorporate all of the automata into a single one so that we can better understand the interaction. called the product automaton. the product automaton creates a new state for all possible states of each automaton. since the customer automaton only has one state we only need to consider the pair of states between the bank and the store. for example we start in state a ۱ where the store is in its start state and the bank is in its start state. from there we can move to states a ۲ if the bank receives a cancel or state b ۱ if the store receives a pay. to construct the product automaton we run the bank and store automaton in parallel using all possible inputs and creating an edge on the product automaton to the corresponding set of states. product automaton product automaton how is this useful it can help validate our protocol. it tells us that not all states are reachable from the start state. for example we should never be in state g ۱ where we have shipped and transferred cash but the bank is still waiting for a redeem. it allows us to see if potential errors can occur. we can reach state c ۲ . this is problematic because it allows a product to be shipped but the money has not been transferred to the store. in contrast we can see that if we reach state d ۳ or e ۳ then the store should be okay – a transfer from the bank must occur assuming the bank automaton doesn’t die which is why it is useful to add arcs for all possible inputs to complete the automaton simple example – ۱ way door as an example consider a one way automatic door. this door has two pads that can sense when someone is standing on them a front and rear pad. we want people to walk through the front and toward the rear but not allow someone to walk the other direction one way door let’s assign the following codes to our different input cases a nobody on either pad b person on front pad c person on rear pad d person on front and rear pad we can design the following automaton so that the door doesn’t open if someone is still on the rear pad and hit them formal definition of a finite automaton finite set of states typically q. alphabet of input symbols typically  one state is the start initial state typically q q  q zero or more final accepting states the set is typically f. f  q a transition function typically δ. this function takes a state and input symbol as arguments. returns a state. one rule would be written δ q a p where q and p are states and a is an input symbol. intuitively if the fa is in state q and input a is received then the fa goes to state p note q p ok . a fa is represented as the five tuple a q  δ q f . here f is a set of accepting states. one way door – formal notation write each δ state symbol exercise using  ۱ a clamping circuit waits for a ۱ input and forever after makes a ۱ output regardless of the input. however to avoid clamping on spurious noise design a dfa that waits for two ۱ s in a row and clamps only then. write the transition function in table format as well as graph format. formal definition of computation let …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: ., state, automaton, bank, input, q, store, receive, action, product, pad, dfa,

این فایل پاورپوینت شامل 48 اسلاید و به زبان انگلیسی و حجم آن 0.23 مگا بایت است. نوع قالب فایل ppt بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ 2019/05/15 10:54:04 استخراج شده است.

http://math.uaa.alaska.edu/~afkjm/cs351/handouts/finite-automata.ppt

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