IterativeCrawler The IterativeCrawler is similar to the RecursiveCrawler in that it also overrides the crawl method to visit pages. However, it adds some additional functionality that allows it to visit individual pages in a step-by-step fashion without moving on to links completely. Note that the IterativeCrawler should only put valid pages into its pendingPages which are those that are present and return true according to the validPageLink(page) method of Crawler. Skeleton protected ArraySet pendingPages A list of pages that remain to be visited. As a single page is visited, any valid links that are found are added to this list to be visited later. This list should only contain valid, existing pages which can be visited and have not yet been visited. public IterativeCrawler() Creates an empty crawler public void crawl (String pageFileName) Master crawl method which will start at the given page and visit all reachable pages. It adds the given page to the pendingPages and calls crawlRemainging public void crawlRemaining() Enter a loop that crawls individual pages until there are no pending pages remaining. During execution, the pendingPages set grows and shrinks but should eventually reduce to size 0. public void addPendingPage(String pageFileName) Will add a page to be visited at a later time by the crawler. It can be used independently to add pages for later or during other methods of IterativeCrawler. It is assumed that that pageFileName is valid and exists so can be visited and parsed. public int pending PagesSize() Returns the number of pages remaining to visit. public String pendingPagesString() Returns a string with each pending page to visit on its own line. public void crawlNextPage() Crawl a single page which is retrieved and removed from the list of pending pages (the next page to be crawled should be the last page in the pendingPages set - use asList method to get a list version of the set and the remove method of lists to accomplish this). The page is added to the foundPages for the crawler and any links on it are added either to the pending Pages or skippedPages. The process of doing this is very similar to the pseudocode in RecursiveCrawler but replaces recursive calls with additions to pendingPages.
Answers
Java IterativeCrawler class for step-by-step web page crawling implementation.
How is the IterativeCrawler different from the RecursiveCrawler?Here's the implementation of the IterativeCrawler class with the provided methods:
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class IterativeCrawler extends Crawler {
protected Set<String> pendingPages; // A list of pages that remain to be visited
public IterativeCrawler() {
super();
pendingPages = new HashSet<>();
}
public void crawl(String pageFileName) {
addPendingPage(pageFileName);
crawlRemaining();
}
public void crawlRemaining() {
while (!pendingPages.isEmpty()) {
crawlNextPage();
}
}
public void addPendingPage(String pageFileName) {
pendingPages.add(pageFileName);
}
public int pendingPagesSize() {
return pendingPages.size();
}
public String pendingPagesString() {
StringBuilder sb = new StringBuilder();
for (String page : pendingPages) {
sb.append(page).append("\n");
}
return sb.toString();
}
public void crawlNextPage() {
List<String> pendingList = new ArrayList<>(pendingPages);
String nextPage = pendingList.get(pendingList.size() - 1);
pendingList.remove(pendingList.size() - 1);
pendingPages = new HashSet<>(pendingList);
addFoundPage(nextPage);
Set<String> links = getLinksFromPage(nextPage);
for (String link : links) {
if (validPageLink(link)) {
addPendingPage(link);
} else {
addSkippedPage(link);
}
}
}
}
Please note that the Crawler class and its methods (validPageLink, addFoundPage, addSkippedPage, getLinksFromPage) need to be implemented separately based on your specific requirements and logic.
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Related Questions
___signs tell you what you can or can't do, and what you must do ?
A. Regulatory
B. Warning
C. Guide
D. Construction
Answers
Answer:
Warning signs tell you can or can't do, and what you must do?
Answer:
c guide
Explanation:
Decimal numbers are based on __________. letters (a and b) 16 digits 10 digits two digits (1s and 0s)
Answers
Answer:
10 digits.
Explanation:
Decimal numbers are based on 10 digits.
Simply stated, decimal numbers comprises of the digits ranging from 0 to 9 i.e 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. Thus, all decimal numbers are solely dependent on the aforementioned 10 digits.
Hence, decimal numbers are considered to be a normal (standard) number system because they are based on 10 digits (0 through 9) and as such they are the numbers used in our everyday life across the world.
This ultimately implies that, any normal number to be written as decimal numbers can only use or combine the 10 digits (0 - 9).
Answer:
D: two digits (1s and 0s)
Explanation:
All numbers in general in coding are based on ONES and ZEROS.
what is computer generation
Answers
Answer:
Generation in computer terminology is a change in technology a computer is/was being used which includes hardware and software to make of an entire computer system .
2
ng and Upgrading Computers: Mastery Test
Select the correct answer.
Which of the following can computer maintenance software determine?
O A.
O B.
O C.
O D.
whether your hard drive is about to fail
whether your monitor or screen is drawing too much power
the humidity inside your desktop computer
the amount of dust inside your laptop
Reset
Next
Answers
whether your hard drive is about to fail can computer maintenance software determine.
What is computer maintenance software ?
Software that centralises maintenance data and streamlines maintenance operations is known as a computerised maintenance management system, or CMMS. It aids in maximising the use and accessibility of tangible assets like machines, transportation, communications, plant infrastructures, and other assets. CMMS systems, also known as computerised maintenance management information systems (CMMIS), are used in the manufacturing, energy, transportation, building, and other sectors where physical infrastructure is essential.
A CMMS's database is its fundamental component. The information regarding the assets that a maintenance organisation is responsible for maintaining, as well as the tools, supplies, and other resources needed to do so, are organised using a data model.
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Which of the following statements is NOT true about Python?
a) Python is a high-level language.
b) Python can be used for web development
c) Python variables are dynamic type
d) Python is a compiled language
Answers
Python is an interpreted language and NOT( a compiled one, )although compilation is a step.
Answer:
D
Explanation:
D, Python is an interpreted one and not a compiled one. While the compiler scans the entire code, interpreters go line-by-line to scan it. For example, if you get a syntax, indentation or any error, you will only get one and not multiple.
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what kind of error would the following code generate? df[['year'] runtime error logic error memory error syntax error
Answers
The type of error that the following code would generate is a syntax error.The code "df[['year']" would result in a syntax error. This is because the syntax of a list of columns in pandas involves using a list of strings, such as `df[['column1', 'column2']]`.]
Therefore, the single quotes in `df[['year']` are not closed and this leads to a syntax error. It is important to use the correct syntax when coding to avoid syntax errors, which can be identified easily by the computer.Syntax errors refer to a type of error that occurs when there are errors in the syntax of a programming language. They are detected by the compiler or interpreter and stop the program from running. In Python, the most common syntax errors include missing colons, missing parentheses, and typos, among others. Syntax errors are often identified by the computer as they cause the program to crash, and are the easiest errors to debug compared to runtime errors, memory errors, and logic errors.Therefore, in the code "df[['year']", the syntax error is caused by the missing closing quotes in the list of columns, and can be fixed by adding a closing bracket. The correct code would be `df[['year']]`.
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A router is a communications processer used to pass ________ through different networks.
A. data blasts
B. data drivers
C. databases
D. packets of data
E. data cycles
Answers
A router is a communication processor used to pass D. packets of data through different networks.
A router is a communication processor that passes data packets between different computer networks. A router is a networking device that routes data packets between different computer networks. It reads the addresses of the packet and then forwards it to the correct network. A router is a fundamental component of the internet as well as other networks.
A packet is a single unit of binary data routed between an origin and destination on the internet or other networks. It's a form of digital envelope that contains the origin IP address, the destination IP address, and other required information.
Data packets are essential because they enable the internet to function as a network. Routers are used in a variety of applications, including home and business networks, as well as on the internet. In general, routers are designed to connect networks, which can be anything from a LAN (Local Area Network) to a WAN (Wide Area Network). Therefore, option D is correct.
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Which decimal value (base 10) is equal to the binary number 1012?
Answers
Answer:
The decimal value of 101₂² base 2 = 25 base 10
Explanation:
The number 101₂² in decimal value is found as follows;
101₂ × 101₂ = 101₂ + 0₂ + 10100₂
We note that in 101 + 10100 the resultant 2 in the hundred position will have to be converted to a zero while carrying over 1 to the thousand position to give;
101₂ + 0₂ + 10100₂ = 11001₂
Therefore;
101₂² = 11001₂
We now convert the result of the square of the base 2 number, 101², which is 11001₂ to base 10 as follows;
Therefore converting 11001₂ to base 10 gives;
11001₂= 1 × 2⁴ + 1 × 2³ + 0 × 2² + 0 × 2 ¹ + 1 × 2⁰
Which gives;
16 + 8 + 0 + 0 + 1 = 25₁₀.
The decimal value in base 10 that is equal to the binary number 101_2 is; 5
We want to convert 101_2 from binary to decimal.
To do this we will follow the procedure as follows;
(1 × 2²) + (0 × 2¹) + (1 × 2^(0))
>> (1 × 4) + (0 × 2) + (1 × 1)
>> 4 + 0 + 1
>> 5
In conclusion, the decimal value we got for the binary number 101_2 is 5
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HELP PLZ AM TIMED!!!~~~
In which view of PowerPoint is the Annotation tools menu available?
Slide Show
Normal
Slide Sorter
Notes
Answers
Answer:
im pretty sure its slide show
Answer:
slide sorter notes
Explanation:
because you're giving a PowerPoint presentation you may want to make some notes on the slides such as circling a word or underlining a phrase or highlight a key concept
Question #1
Describe the issues regarding controlled airspace and minimum safe altitudes that affects an airborne pilot's decision-making.
Question #2
Describe how basic weather conditions such as wind, temperature, and precipitation will
affect a drone’s flight.
Question #3
Explain the role of the “Pilot-in-Command” and the “Remote-Pilot-in-Command.”
Question #4
Explain how a quadcopter maintains balanced flight while hovering.
Question #4
Explain how a quadcopter differs from an airplane to accomplish the maneuvers of pitch, roll, and yaw.
Answers
Answer:
1) Separation
2) Weather impacts on the ability to fly a drone
3) The Pilot-in-Command is in charge of a manned aircraft
The Remote-Pilot-in-Command is in charge of an unmanned aircraft
4) With the aid of a flight controller
5) A quadcopter is controlled by adjusting the rotor speeds
An airplane is controlled by adjusting the ailerons, elevator and rudder
Explanation:
1) Separation
Issues regarding controlled airspace and minimum safe altitudes that affects an airborne pilot's decision-making is called separation related issues
The concept of separation pertains to ensuring that an aircraft stays outside the minimum distance from other aircraft, obstacles or controlled airspace
Vertical Separation
The allowable vertical separation distance between two aircraft from the ground surface up to 29000 feet is 300 meters
The allowable vertical separation distance between two aircraft above 29000 feet is 600 meters
Horizontal separation
Horizontal separation are required for two aircraft that are closer to each other than the allowable minimum vertical separation. Horizontal separation includes, procedural separation, longitudinal separation, radar separation and reduced separation
2)
Wind
When the wind speed is high, it limits the drone's ability to maintain its position drifting the aircraft to undesired direction of flight
Temperature
High temperatures causes the the drone's motor to work harder generating more lift force which lead to shorter flight times
Cold temperatures reduces the battery efficiency and can also lower the battery voltage below the critical voltage.
Precipitation
A drone's is not waterproof and flying a drone i the rain can damage the equipment
Flying a drone in the rain increases the difficulty in its operation especially in drones that makes use of cameras for their flight stability
Rainy conditions reduces the strength and control of remote controllers
There is reduced visibility of flight during rainfall
3) In an aircraft, the Pilot-in-Command (PIC) is the pilot primarily responsible for the safety and operation of the aircraft during flight
The Remote-Pilot-in-Command has the primary responsibility and authority for the operation of a remotely operated (small) aircraft system
4) A quadcopter maintains balanced flight by the information sent to control the direction of the propeller and the orientation as well as the speed of the rotor controlled by flight controller through the electronic speed control circuit (ESC) to control the thrust, revolutions per minute (RPM) and the direction of the quadcopter
5) Pitch in a quadcopter is achieved by tilting to move forward
In an airoplane the pitch is controlled by the elevators
Roll in a quadcopter is achieved by increasing the rotation of the rotors on the one side and decreasing the rotor speed on the other side
Roll in an airplane is achieved by adjusting ailerons
Yaw in a quadcopter is the spin achieved by reducing the speed of the front rotor on the side opposite to the direction of the intended spin motion
Yaw in an airplane is achieved by adjusting the ruder and ailerons to turn the plane
hris has received an email that was entirely written using capitalization. He needs to paste this text into another document but also ensure that the capitalization is removed.
What should Chris do?
Answers
Which data type is –7?
int
single
string
float
Answers
Answer:
Int
Explanation:
Good Luck!
MS-Word 2016 is the latest version of WORD software. True or False
It's urgent
Answers
Answer:
true
Explanation:
Answer: This is True!
I hope you have a nice day
computer memory and the cpu can only represent numerical data. what do we use in order to store/represent non-numerical data?
Answers
Nathanial is consistently late for meetings. He has not accepted. A. the group norms. B. the group format. C. the group roles. D. his status in the group.
Answers
Nathanial is consistently late for meetings. He has not accepted the group norms, option A is correct.
Nathanial's consistent lateness for meetings indicates that he has not accepted or adhered to the established norms or expectations regarding punctuality within the group.
Group norms are the informal rules or standards of behavior that are shared and accepted by group members. These norms often include expectations regarding attendance, participation, and timeliness.
By consistently being late for meetings, Nathanial is not aligning his behavior with the group's agreed-upon norm of punctuality.
It is important for group members to respect and abide by the established norms to maintain a productive and cohesive group dynamic.
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20) which one of the following statements is not true? a) the internet backbone is owned by the federal government in the united states. b) icann manages the domain name system. c) the iab establishes the overall structure of the internet. d) the internet must conform to laws where it operates. e) w3c determines programming standards for the internet.
Answers
The statement that the internet backbone is owned by the federal government in the United States is not true. In fact, the internet backbone is owned by multiple Tier 1 ISPs around the world. No one owns the whole internet backbone and the internet itself is free for everyone.
The internet backboneThe internet is a global network of computers. Its core is the internet backbone, the largest and fastest network linked together with fiber-optic cables around the world. The traffic of the global internet runs here connecting all locations around the globe. This backbone infrastructure is owned by multiple ISP companies.
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What purpose does the underlined portion of this excerpt
serve in the argument that Americans should agree to pay
more taxes to raise money for entering the war?
Answers
Answer:
The below mentioned portion is missing from the question
A part of the sacrifice means the payment of more money in taxes. In my Budget Message I shall recommend that a greater portion of this great defense program be paid for from taxation than we are paying today. No person should try, or be allowed, to get rich out of this program; and the principle of tax payments in accordance with ability to pay should be constantly before our eyes to guide our legislation.
The passage provides the reason why extra taxes must be collected should America decide to join the war or it introduces the claim that patriotic Americans should be willing to sacrifice and pay extra taxes.
What happens if programmer does not use tools. before programming?
Answers
Computers can only be programmed to solve problems. it's crucial to pay attention to two crucial words.
A computer is useless without the programmer (you). It complies with your instructions. Use computers as tools to solve problems. They are complex instruments, to be sure, but their purpose is to facilitate tasks; they are neither mysterious nor mystical.
Programming is a creative endeavor; just as there are no right or wrong ways to paint a picture, there are also no right or wrong ways to solve a problem.
There are options available, and while one may appear preferable to the other, it doesn't necessarily follow that the other is incorrect. A programmer may create software to address an infinite number of problems, from informing you when your next train will arrive to playing your favorite music, with the proper training and experience.
Thus, Computers can only be programmed to solve problems. it's crucial to pay attention to two crucial words.
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explain the following types of storages
flash disk
Answers
Explanation:
a data storage device that uses flash memory specifically : a small rectangular device that is designed to be plugged directly into a USB port on a computer and is often used for transferring files from one computer to another. — called also thumb drive.
Answer:
storage module made of flash memory chips. Flash disks have no mechanical platters or access arms, but the term "disk" is used because the data are accessed as if they were on a hard drive. The disk storage structure is emulated.
The first flash disks were housed in Type II PC Cards for expanding laptop storage. Subsequently, flash memory disks have arrived in a variety of formats, including entire hard drive replacements (see SSD), memory cards for digital cameras (see flash memory) and modules that fit on a keychain (see USB drive
question 3 which layer in the transmission control protocol/internet protocol (tcp/ip) model does ip use?
Answers
Network Layer. For the network, this layer, also referred to as the network layer, accepts and sends packets. These protocols include the robust Internet protocol (IP), the Address Resolution Protocol (ARP), and the Internet Control Message Protocol (ICMP).
What layer of the TCP/IP paradigm does the transport layer belong to?Layer 4: The Transport Layer, which TCP/IP depends on to efficiently manage communications between two hosts. The transport layer creates this connection whenever an IP communication session has to start or stop.
In the TCP/IP model, what is Layer 3?Data segments are transmitted between networks using packets at Layer 3 (Network). This layer gives the data segments source and destination IP addresses when you message a friend.
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does your internet connection work faster if you have a wireless and direct connection simultaneously
Answers
No, there won't be any kind of speed improvement.
What occurs when an Ethernet and wireless connection is made?Your internet connection could slow down if you use ethernet and Wi-Fi at the same time because your computer might duplicate, mix up, or receive data packets from the router out of order.Your computer won't be able to handle the information correctly, and the internet will be slow.If the computer (client device) is connected to the same source (router) via both WiFi and Ethernet, you are still using the same bandwidth.So, no, there won't be any boost in speed.To learn more about Ethernet and wifi are both linked refer to:
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one disadvantage of using a wireless network over a wired network
Answers
Answer:
Slower than wired network
Explanation:
This is much weaker than a wired connection. It is likely that the network is less secure. A variety of factors, including large distances or artifacts, can impede wireless transmission around wireless devices as well as other wireless devices.
write a function using fat arrow syntax, `salestax` that takes in an arbitrary number of arguments as prices, adds them up and returns a string containing the sales tax with a dollar sign in front. use a tax percentage of 9%.
Answers
Answer:
Explanation:
const salesTax = (...allThePricesValAr) => {
sumOfPrices = 0
for(eachValPrc of allThePricesValAr){
sumOfPrices = sumOfPrices + eachValPrc
}
let taxOnPrcVal = sumOfPrices * 9 / 100;
let taxOnPrcVals = `$${taxOnPrcVal.toFixed(2)}`;
return taxOnPrcVals;
}
what features should you configure if you want to limit access to resources by users in a trusted forest, regardless of permission settings on these resources?
Answers
The features you should configure if you want to limit access to resources by users in a trusted forest, regardless of permission settings on these resources is selective authentication.
What is resources?
A system resource, often known as a resource in computing, is any real or virtual component with restricted availability within a computer system. Resources include all connected devices and internal system components. Files (concretely file handles), network connections, and memory spaces are examples of virtual system resources. Resource management refers to the process of managing resources, which includes both preventing resource leaks and dealing with resource conflict. Cloud computing makes use of computing resources to deliver services through networks.
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12 / 4 * 3 div 2 tin học
Answers
Answer:
9/2 is the answers for the question
Explanation:
please mark me as brainlest
I need help please.
.
Answers
Answer:
yes
Explanation:
157 > 145
Answer:yes
Explanation:12
only the attack portion of the samples are played from ram, while the rest of the samples are played directly from the hard drive. what is this process called?
Answers
The process of playing only the attack portion of the samples from RAM while the rest of the samples are played directly from the hard drive is called "streaming."
Streaming is a method of delivering data over the internet that involves playing an audio or video file as it is being downloaded from a server. It is a technique that allows you to play media content without waiting for the entire file to download, which can be beneficial for larger files such as movies or long music tracks. The concept of streaming is also used in music production software where it is necessary to play back samples in real-time to check how they sound in a mix, and this can be done by loading the samples into RAM and streaming them.
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Assume that the Measurable interface is defined with a static sum method that computes the sum of the Measurable objects passed in as an array, and that BankAccount implements the Measurableinterface. Also assume that there is a variable branchAccounts that is an object reference to a populated array of BankAccount objects for a bank branch. Which of the following represents a correct invocation of the sum method to find the total balance of all accounts at the branch?
A) Arrays.sum(branchAccounts)
B) Measurable.sum(branchAccounts)
C) BankAccount.sum(branchAccounts)
D) branchAccounts.sum()
Answers
Answer:
B) Measurable.sum (branchAccounts)
Explanation:
The user interface which can be built by adding components to a panel. The sum method that will be used to find total balance of all accounts at branch is measurable.sum, this will layout the sum of specified branch account total. The measurable interface implements public class bank account as measurable sum.
Which are two fundamental building blocks for creating websites?
OOOO
HTML
XML
CSS
DOCX
AAC
Answers
Hey the main coding languages for building websites are html. html is for the formatting . when CSS the other one is used for the style. we use CSS for style sheets and much more.
if you think about it like a house html is the foundations and the walls and css is the paint.
Hope this helps.
andrew is researching a new operating system for the computers at his workplace. his boss wants the computers to be able to connect to the cloud and thus have security in case the laptops are stolen. what version of windows 8.1 does not have the ability to lock the hard drive so that it is unusable if removed from a laptop?
Answers
Windows 8.1 Core is the version of Windows 8.1 that does not provide the ability to lock a hard drive to make it unusable in case the hard drive is removed from a laptop.
To password-protect, a hard drive on Windows 8.1 computer is really simple. BitLocker is Windows's 8.1 built-in hard drive encryption software. However, this hard drive password-protection feature does not work on the Windows 8.1 Core which is a version of Windows 8.1.
According to the given scenario, Andrew should avoid using Windows 8.1 Core version because his boss wants such an operating system that is highly secure because of having a feature of connectivity with the cloud to lock a hard drive; so in case, the laptop is stolen the hard drive of the laptop could make it unsuable via the cloud connectivity feature.
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