航空资料36(20)

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vs. Jensen-Shannon vs. L1-Norm vs. Skew-Divergence).
The rst three graphs in Figure 4 show the precision over
three individual target classes. Several conclusions can be
drawn after inspecting the results. First, the quality of the
attributes extracted by a given similarity function varies
among classes. For instance, when using Jensen-Shannon
WWW 2007 / Track: Data Mining Session: Mining Textual Data
105
0.6
0.8
1
0 10 20 30 40 50
Precision
Rank
Class: CartoonCharacter
Cosine
Jaccard
Jensen-Shannon
L1-Norm
Skew-Divergence
0.6
0.8
1
0 10 20 30 40 50
Precision
Rank
Class: Painter
Cosine
Jaccard
Jensen-Shannon
L1-Norm
Skew-Divergence
0.6
0.8
1
0 10 20 30 40 50
Precision
Rank
Class: River
Cosine
Jaccard
Jensen-Shannon
L1-Norm
Skew-Divergence
0.6
0.8
1
0 10 20 30 40 50
Precision
Rank
Class: Average-Class
Cosine
Jaccard
Jensen-Shannon
L1-Norm
Skew-Divergence
Figure 4: In
uence of similarity functions on the precision of the ranked list of extracted attributes, for a
few target classes (left) and as an average over all target classes (right)
Class Top Extracted Attributes
Actor awards, height, age, date of birth, weight, b** **** (oensive), birthdate, birthplace, cause of death, real name
AircraftModel weight, length, history, fuel consumption, interior photos, specications, photographs, interior pictures,
seating arrangement,
ight deck
Award recipients, date, winners list, result, gossip, printable ballot, nominees, winners, location, announcements
BasicFood calories, color, size, allergies, taste, carbs, nutritional information, nutrition facts, nutritional value, nutrition
CarModel transmission, top speed, acceleration, transmission problems, owners manual, gas mileage, towing capacity,
stalling, maintenance schedule, performance parts
CartoonChar costume, voice, creator, rst appearance, funny pictures, origins, cartoon images, cartoon pics, color pages,
CellPhoneModel features, battery life, retail price, mobile review, specication, price list, functions, ratings, tips, tricks
ChemicalElem mass, symbol, atomic number, normal phase, classication, electron conguration, atomic structure, origin
name, freezing point, lewis dot diagram
City map, population, zip code, climate, demographics, yellow pages, telephone directory, mayor, phone book,
Company location, ceo, headquarters, stock price, mission statement, chairman, corporate oce, company prole, code
of conduct, 2004 annual report
Country population,
ag, climate, president, area, population density, geography, economy, religion, topography
Currency exchange rates, symbol, currency converter, currency conversion, country, currency exchange, convert,
exchange rate for, conversion chart, currency calculator
DigitalCamera zoom, battery life, cost, troubleshooting, resolution, specication, specs, software download, uk price,
instruction manual
Disease treatment, symptoms, causes, incidence, signs, pictures, denition, cure, diagnosis, prognosis
Drug side eects, dosage, price, withdrawal symptoms, generic equivalent, food source, dangers, mechanism of
action, contraindications, half-life
Empire collapse, size, denition, downfall, chronology, time line, location, achievements, accomplishments, rise
Flower color, structure, genus, botanical name, anatomy,
ower meaning, line drawing, taxonomy, sketch, oil paintings
Holiday date, origin, customs, signicance, history, denition, christian festival, meaning, purpose, traditions
Hurricane damage, death toll, date, destruction, wind speed, satellite images, statistics, track, aftermath, prediction
Mountain height, location, geology, elevation, topographic map, eruption history, lava type, formation, last eruption,
Movie cast, release date, director, crew, cast list, synopsis, ocial site, ocial website, plot summary, storyline
NationalPark location, geology, pics, address, climate, history, photographs, birds, photos, elevation
NbaTeam owner, coach, video clips, jason williams, wallpapers, facts, message board, seating chart, mascot,
championships
Newspaper editor, website, owner, back issues, homepage, logo, publisher, tv guide, classied ads, circulation gures
Painter paintings, biography, bibliography, autobiography, artwork, self portraits, quotations, bio, quotes, life history
ProgLanguage syntax, advantages, basics, commands, tutorial, statement, examples, inventor, reference, help
Religion beliefs, origin, gods, teachings, tenets, sacred writings, principles, practices, sacred texts, basics
　
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