暂无图片
暂无图片
暂无图片
暂无图片
暂无图片
一种满足差分隐私的轨迹数据安全存储和发布方法 - 吴万青, 赵永新, 王巧, 底超凡.pdf
91
14页
1次
2021-11-10
免费下载
DOI
:
issn
JournalofCom
p
uterResearchandDevelo
p
ment
(
):
,
 
稿
:
;
:
 
:
(
ZD
);
(
F
)
Thisworkwassu
pp
ortedb
y
theScienceand Technolo
gy
Research Pro
j
ectofHebeiHi
g
herEducation
(
ZD
)
andthe
NaturalScienceFoundationofHebeiProvince
(
F
)
 
:
(
z
y
xcom
)
 
 
 
 
(
 
 
)
(
(
)
 
 
)
(
wuwan
q
in
g
com
)
ASafeStora
g
eandReleaseMethodofTra
j
ector
y
DataSatisf
y
in
g
Differential
Privac
y
Wu Wan
q
in
g
,
ZhaoYon
g
xin
,
Wan
g
Qiao
,
andDiChaofan
(
Colle
g
eo
f
C
y
berSecurit
y
andCom
p
uter
,
HebeiUniversit
y
,
Baodin
g
,
Hebei
)
(
Ke
y
Laborator
y
o
f
Hi
g
hTrustedIn
f
ormationS
y
stemin HebeiProvince
(
HebeiUniversit
y
),
Baodin
g
,
Hebei
)
Abstract Inrecent
y
ears
,
althou
g
hlocationbasedservicesoftwarefacilitates
p
eo
p
le􀆳slife
,
itbrin
g
s
theriskof
p
rivac
y
leaka
g
eInordertosolvethis
p
roblem
,
we
p
ro
p
oseatra
j
ector
y
data
p
ublishin
g
methodthatisbasedonthenoise
p
refixtreestructureInthefirst
p
art
,
thetra
j
ector
y
e
q
uivalence
classisconstructedaccordin
g
tothes
p
acetimecharacteristicsofthetra
j
ector
y
,
andthenthelocus
location
p
ointsaredividedb
y
Hilbertcurvetoobtainthecentral
p
ointsofthedividedre
g
ionFinall
y
,
theobtained central
p
ointsareconver
g
edintothe new tra
j
ector
y
,
so astoreducethes
p
atial
com
p
lexit
y
Thesecond
p
artbuildsa
p
refixtreeforstorin
g
location
p
ointsaccordin
g
tothenatureof
the
p
refixtree
,
andstoresthea
gg
re
g
atedtracklocation
p
ointsintothe
p
refixtree
,
whichcanim
p
rove
q
uer
y
efficienc
y
Inthethird
p
art
,
inorderto
p
rotectthesensitiveinformationstoredinthenodes
,
thisarticlewilladdLa
p
lacenoisetothenodesofthe
p
refixtree
,
sothatsafertra
j
ector
y
datacanbe
releasedConsiderin
g
thatthe
p
ublisheddatashould beofhi
g
havailabilit
y
,
this
p
a
p
erusesthe
arithmetic
p
rivac
y
bud
g
etallocation methodtoaddLa
p
lacenoisetothenodedata
,
andlimitsthe
amountofnoiseb
y
thethresholdvalueofeachla
y
er
,
soastofinall
yp
ublishtra
j
ector
y
datawithhi
g
h
availabilit
y
satisf
y
in
g
thedifferential
p
rivac
y
modelThrou
g
htheex
p
erimentalverificationofrealdata
sets
,
andcom
p
arin
g
withtheexistin
g
NTPTal
g
orithm
,
our
p
ro
p
osedTDPPal
g
orithmislowerthan
theNTPTal
g
orithmindifferenterrorvalues
,
andcan
p
rovidebetter
p
rivac
yp
rotectionItisverified
thattheal
g
orithm
p
ro
p
osedinthis
p
a
p
erim
p
rovesdataavailabilit
y
whileensurin
g
data
p
rivac
y
Ke
y
words differential
p
rivac
y
;
location
p
rivac
y
;
Hilbertcurve
;
p
refixtree
;
tra
j
ector
y
data
 
 
便
,
,
,
Hilbert
线
,
,
,
,
,
,
La
p
lace
,
,
,
 
;
;
Hilbert
线
;
;
 TP
  
,
,
便
,
(
locationbasedservices
,
LBS
)
,
,
,
,
,
使
LBS
使
LBS
,
,
,
Sweene
y
K
[
]
[
]
K
,
广
Gruteser
K
,
[
]
K
使
,
,
K
Chow
K
[
]
,
,
,
K
,
K
Wan
g
(
X
,
Y
)
,
X
,
Y
[
]
,
X
,
X
K
Y
Zhan
g
(
K
,
e
)
,
,
K
,
e
[
]
Machanava
jj
hala
l
[
]
,
,
,
,
,
t
[
]
t
t
,
t
K
,
,
,
,
,
l
K
,
,
,
t
l
,
,
,
,
Dwork
,
[
]
,
,
,
[
]
,
广
,
广
[
]
Andrés
,
[
]
,
LBS
Dewri
Hilbert
[
]
,
Gurso
y
DPStar
[
]
,
,
,
:
of 14
免费下载
【版权声明】本文为墨天轮用户原创内容,转载时必须标注文档的来源(墨天轮),文档链接,文档作者等基本信息,否则作者和墨天轮有权追究责任。如果您发现墨天轮中有涉嫌抄袭或者侵权的内容,欢迎发送邮件至:contact@modb.pro进行举报,并提供相关证据,一经查实,墨天轮将立刻删除相关内容。

评论

关注
最新上传
暂无内容,敬请期待...
下载排行榜
Top250 周榜 月榜