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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
0 }' i, q, C2 I+ H3 J' jto do-business ! A$ u) y. a; F6 H7 F8 v
rt random 360
0 _; J  S* r- m  ? fd 1
/ N9 \+ V' l- U; x ifelse(other turtles-here != nobody)[# E7 n6 ^+ P3 x) X5 |1 Z
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.+ R: X2 L( n. v& l
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' P. W; n8 {4 [
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 B0 K4 C3 m% `3 J) r- T: f3 K
   set [trade-record-one-len] of self length [trade-record-one] of self. o" q( D$ l  r; g+ e
   set trade-record-current( list (timer) (random money-upper-limit))
% T2 O9 p! z# R- x& D; i7 I1 ]: t; q% g
问题的提示如下:
+ `2 \5 R$ K0 x7 k1 z. ]' c$ d  P  F
error while turtle 50 running OF in procedure DO-BUSINESS
' z( ~0 E/ f2 K" g. @  called by procedure GO
8 d3 a: P; d* P; g/ B5 BOF expected input to be a turtle agentset or turtle but got NOBODY instead., `* W$ A5 P- p3 M: E
(halted running of go)
! E6 S9 M! O/ I- Z( z+ T) Z* V8 |- O# G4 u$ p) A) U
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~- T: @) e: q: @1 p
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
: U( J. I' M8 ?) R& Q9 [. Oglobals[6 m2 E  y4 m/ ~( W; e
xmax
5 P# @: e$ @* U# ?/ Gymax
6 L5 z1 E5 Q" y8 k3 yglobal-reputation-list5 O# g) s7 F  }
) A0 J- R- P& l) A
;;
每一个turtle的全局声誉都存在此LIST
; `' m2 r! L3 D1 }credibility-list
2 h9 l) p3 X. }! Z2 x;;
每一个turtle的评价可信度
/ V) l! n8 U: S1 t3 V, j# ehonest-service. U& ~0 ^& K6 r) r, U, D  P+ |  v
unhonest-service' E6 V; T! R2 R" A- D2 _
oscillation
. G( P, x" }4 X# [# E3 Urand-dynamic. K+ O2 C0 j! i* B
]
# c% g2 a) A# K* n' S4 r
% e3 `8 K; P! K, p6 iturtles-own[
4 c; }5 v4 E9 h* n0 p: D6 Btrade-record-all
% r9 E. L  e; t0 o;;a list of lists,
trade-record-one组成
0 Y" [7 O4 m! ~* F+ k0 L0 itrade-record-one
4 V% H# N: {) t6 u;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 f1 o' B6 R+ ^% w: r" W$ H4 X5 o
4 j/ T( b, E! a: U8 s;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
7 F1 X, c1 X$ A) U7 Itrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]6 I! K$ z7 q. m8 m8 Y
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list  {) X9 m) {  v0 z  N% o
neighbor-total
4 b- z# c% o: w& w;;
记录该turtle的邻居节点的数目  u4 m; K3 t" f
trade-time% b* O% h! F3 D7 V
;;
当前发生交易的turtle的交易时间
" {& H, _6 e6 [appraise-give  c; G8 U& [3 ]7 J. P
;;
当前发生交易时给出的评价
1 J7 k* Y5 ^6 N& W% }appraise-receive& P" n5 P2 Z% U
;;
当前发生交易时收到的评价9 |3 C/ k  w: }! C+ q0 [" P
appraise-time- t) v0 U+ i. F) C
;;
当前发生交易时的评价时间
6 x6 }$ }( [7 K) T' f4 {/ v+ Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉0 a* _/ o$ X( I9 ^/ w
trade-times-total
& g* `, J( B! u% u- _* {/ C;;
与当前turtle的交易总次数
; X% M' m& H. b( x, V. ?- ltrade-money-total
$ v3 D1 a2 u# v# f' m;;
与当前turtle的交易总金额& C  |$ x8 @! C& F9 q/ W- Z
local-reputation
4 A. C9 I; j. r& E2 q  Fglobal-reputation( a; Y: i1 [9 A) A4 R
credibility1 [. U5 _1 l! ]5 i4 W; |
;;
评价可信度,每次交易后都需要更新. Z& j, ?" U% B; X4 p
credibility-all2 e4 X( t$ l/ }3 S: z9 j1 E
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
3 R4 M) |/ R" g/ [" O! r
$ X1 L9 E* I1 j% l( ^;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.58 k9 c" X' |+ {  Y7 A- X; b
credibility-one8 f* v( ?* i( t- U8 E  Z
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
  L  f! f8 Z2 H' G! l$ n% H! Lglobal-proportion
* K. m7 a; U7 k- ^+ G7 D. U' mcustomer6 d3 C1 l  J' ]
customer-no6 C; y: K; U2 Q& A% E
trust-ok
+ }2 q& o8 F# R  [7 J% S- Q1 Rtrade-record-one-len;;trade-record-one的长度( n, f5 a7 u& s3 K4 i& W( Y* ^# l9 D
]( G; B' R# X1 \: `# K0 \
0 J4 T2 R7 M( P0 B1 L& t
;;setup procedure
/ C8 R! F4 p4 N  |9 f
) w, L  g0 ^; uto setup
1 R9 }& c1 m4 Z; j
  I% M) e( _6 w" |2 I! w9 X$ [ca
% R5 w" h# p" M0 ^- M

$ O/ U  {( U: R7 Uinitialize-settings
5 U( {0 y  b* x( |8 [; d

. ]# W1 x) a$ d$ K* {7 m/ @) tcrt people [setup-turtles]
* C8 l! ]5 A* J' S1 j: K$ O4 d
. @& R( m& _) ~% C
reset-timer

" r+ j; u: ]0 z% v5 X* ]8 I
! e* j4 X3 ?" Xpoll-class

2 P1 x7 V. y0 i! f
/ ^5 A0 |1 I( K, Y. s! [setup-plots
) p/ M& ^, W1 S; \
! C3 V" M# H+ S) O; U; ^/ y
do-plots
; g7 B" w* v; Q/ y
end
+ A4 B6 C* @' y& G9 M7 Z" B( \. u! m& _: S
to initialize-settings
0 f- U, Q: N& j& m: l& h) A+ j+ C% }5 Y9 r; J2 H) D: m1 g; Q' x
set global-reputation-list []
  Q% c( a  {' B9 h  }4 ^5 X. T- S

( c( S: `+ S6 D7 Q3 y3 m# Nset credibility-list n-values people [0.5]

( F; o1 r8 i* r5 p6 @* ^/ w/ `/ u  I5 e" s* v- w- v
set honest-service 0

! I: J& r: L! W$ K6 ^% F3 `6 I! O& k! f
set unhonest-service 0
$ X# U; ]  ]- O9 r
  o0 N" S' g. m
set oscillation 0

8 G* o$ N+ b1 E3 \4 m9 z8 |  ]4 _9 `( r, R; v6 ?. Z: P
set rand-dynamic 0
  p. s- r4 C2 x$ p) P
end
, a+ D1 ^- j8 A) M* u$ Q, I
4 G4 Y: b' N. j6 Vto setup-turtles
2 O9 e* o5 t. V  b! T/ Oset shape "person"6 n) ]' B, z  H0 ?0 {
setxy random-xcor random-ycor* P3 o5 ^: }+ Y* v7 F
set trade-record-one []1 X9 R/ |/ B: O% Q2 K5 ]

; Y' w3 n$ }7 y1 O/ mset trade-record-all n-values people [(list (? + 1) 0 0)] + O+ k4 A9 _% F9 B+ q, W: q
0 z2 \3 V6 @, |) a. g- q
set trade-record-current []
4 j, i# O3 z! T- o1 K0 Lset credibility-receive []
3 {# @# D3 k$ g0 V6 p- J! r; Jset local-reputation 0.5/ K+ e- u1 S6 p* J7 S! w: C4 m
set neighbor-total 0
) E! k! g6 D% s& ~set trade-times-total 00 z0 F7 m! o8 Q3 U* V" @
set trade-money-total 05 `$ X5 K8 X; {( ?0 n( i: k
set customer nobody8 p- N. K; s0 B/ d: Z! w
set credibility-all n-values people [creat-credibility]
4 u0 |$ p4 H; v$ Y7 }: U; f$ qset credibility n-values people [-1]
" M' S. Q$ P5 N+ b" |get-color% m* h# z6 j* m' X: Y$ @8 H' Z
, Q! ?8 `' W+ e* ?. g) B
end
" R  Z: M+ {. u: D0 i, y4 q
) h. f3 a  r! t% r0 uto-report creat-credibility
/ f  Q- Z8 m# U1 e/ kreport n-values people [0.5]' Y) m( z! r4 s
end
  ?6 [- j1 a3 }* x% R
& ]& G$ c+ h1 I+ F) j+ g9 Tto setup-plots
" C' C  x5 ]2 e7 H, ~6 `2 f% w' v6 W" d# w/ c
set xmax 30

: Y% _1 b# J- U2 T+ w. z5 d( y/ G& ], r# G- V# [3 I3 b2 x& B
set ymax 1.0

! w! L- q1 [3 t) K" Z1 n6 Q0 {8 Q+ I/ d$ D
clear-all-plots

0 c% c: h6 |1 p2 I3 ?: ~9 Y" o% {3 H& C, a2 L( n) f4 ~
setup-plot1

6 |: Q" }9 m3 i  C' G9 A4 }
- t; D' |6 F, _3 M0 u" H4 ?2 j6 D; Psetup-plot2
; v* L4 A- i, _: Y2 c# f& }

: b, p3 u9 p& q( O& z& _: ]setup-plot3
; J8 k# d5 ?9 z# p* W- P
end
# R6 w0 A# x0 A- B# D% w1 D4 R+ E! p/ Q( V+ T& v$ t) l. p* Y) \" L
;;run time procedures3 m. n% i$ H1 D& O$ b9 ^

" k: j- C" u. K9 t5 _to go
9 `) [7 ?" S3 P5 Z& M! J  Z) G- u4 I8 Q$ R) W6 H$ K! k% r
ask turtles [do-business]
/ R0 j+ M; t& M; [/ @
end
' y1 |' b# i5 h5 I; [/ P
  g$ t: U; S1 Hto do-business
$ O5 H) N% i3 {

, f9 J" K2 T6 c3 p- ]8 ?, y! x4 g( c
rt random 360
1 i+ r: ?- E! `; Y0 A) {
) }: C4 A* q- X
fd 1
) t# ~0 @8 H/ r% e# x7 J& k8 i

  k7 l& ^! P2 n# h3 bifelse(other turtles-here != nobody)[

" B4 K6 \; U$ W* i7 J  k1 a5 ^* a9 A8 \. z4 L
set customer one-of other turtles-here

8 {, }1 m" ?- p" D, Q- {2 |8 L2 T* G6 ?( O
;; set [customer] of customer myself
% y7 r3 o1 F) ?4 H" f6 ^: t/ x
7 M: h1 F7 h& X8 i* \8 Z
set [trade-record-one] of self item (([who] of customer) - 1)6 p+ v% h/ s  w4 `/ c. Z% |
[trade-record-all]of self, |3 l8 }  C3 I9 }+ c$ B' o+ y6 y4 ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* x& w7 O# `" e& Z- A6 o

0 Y) u) O6 F, {! O. _+ K( Bset [trade-record-one] of customer item (([who] of self) - 1)
4 M5 M% o' T$ \  \% l% F5 u4 y+ n6 ^[trade-record-all]of customer
: |# k* i! E: H; X
% I! ?, o) h% h5 u
set [trade-record-one-len] of self length [trade-record-one] of self
+ o9 K" M+ y0 _) B% ~
  _' Y* V9 s6 B7 w8 r
set trade-record-current( list (timer) (random money-upper-limit))

. k  T: M0 C* b/ G1 E9 J4 I7 s  L* _% y8 E, c9 k( y8 V! o2 w
ask self [do-trust]$ T% l  c9 ]0 p4 m3 v: R
;;
先求ij的信任度
3 ?2 G$ X3 ^2 K+ k
* M2 ^* k( V5 N/ a3 J" i* pif ([trust-ok] of self)
. p3 t  }- X) p;;
根据ij的信任度来决定是否与j进行交易[
" ~$ M' ~1 ^( k  ^% c" Gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 M, ^, M" l2 _5 G
; `! V; l# E4 V: |: G# a  d& ^
[

- G# e- g+ D$ y5 Z) J$ j
, E7 o7 Q" F: i& o& Y/ Wdo-trade

) O& @  u8 n' }% z. B: B
' b* g, F0 s7 @update-credibility-ijl
, L8 t% l* W" h* e. b% i0 ?

; [( z% M0 l) F) A( bupdate-credibility-list  M3 ?5 r, {; V0 `. g  Y

8 f0 R0 f4 w; p4 I# A1 {2 \3 ~. g* C1 A% B
update-global-reputation-list

) N# W# ^& o0 R5 Y* `, v: X; M
4 h4 K. F  K+ i' r& G( bpoll-class
' q9 L9 Z' W* r8 X
' g# b+ }+ w; |0 {
get-color

2 t  j4 r" k( d& k6 k- {9 C1 m; V, ^( D! o$ n2 r8 e1 C& x7 N
]]
' C* L8 t. b' w0 @0 {  I& v
$ W3 I# i$ }+ s0 b# a;;
如果所得的信任度满足条件,则进行交易
+ \1 L9 s2 U: E, o/ v2 V7 ~/ Q  ~3 T1 \" D) z7 J8 Q/ }5 i6 H
[

& D. g3 t5 V3 j+ J+ H. ~9 g) N) V
3 K: E  f0 u1 y# M0 vrt random 360

7 ^( K/ W. V( x, l3 |, Q# b+ s8 c" X4 }
fd 1

8 |. ?& \$ }" s3 c: \2 x( B& b3 K, L: N- \- ~
]
6 n$ `3 @2 F1 ~, F+ K6 C

* `1 }: A/ R9 Q7 B6 Wend
3 I; I( H6 c9 D$ u! J( w- l3 S

% {9 p- a/ Q2 \to do-trust
" f6 n: |& `# \3 G  \set trust-ok False
* ^! e9 k2 p$ n( L3 C. E, w) ?& t) D* P- A- L4 a1 h' m
; W5 x' K8 E/ E* Q6 D
let max-trade-times 09 U. Y1 c: w- z* i# i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 T& l  H. T# a% b
let max-trade-money 0
' d2 u1 h  @" N4 d/ ]& ^foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! M/ m7 z" o+ J( p0 l
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ Y$ V: S" m( {3 B* I( Z$ H$ I6 e3 n* Q
( }1 J% X0 o9 f6 D& S
get-global-proportion
. N; L& ^+ x  v' ^) Dlet trust-value
' o) o( }) f% Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: @. `. I& ?, V8 I8 C0 y5 B) l
if(trust-value > trade-trust-value)6 p/ e& T) ?# c" w7 W
[set trust-ok true]/ l0 `4 v, F/ V3 t, q3 {  d
end, k" A6 T$ R* {4 Y/ l& X* i. W1 q

# s2 f  \1 `1 h+ j6 K( x" kto get-global-proportion
7 O8 k3 d6 V+ C  K7 G: g1 M  zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 J, d$ v" \2 f& E4 Z4 @+ r2 d) S* d# A
[set global-proportion 0]
- A, R0 q. J. k[let i 0
0 H9 x5 [, @: E. o2 tlet sum-money 0
+ ]& ?0 m) l* A  F5 Zwhile[ i < people]( F( e; J5 y9 F& U) {+ p
[
3 X% N. J7 T+ P- w% }. Jif( length (item i
" V5 ]0 n3 y/ U6 n" Y+ K[trade-record-all] of customer) > 3 )
% R4 G5 K. g( R* F
[
' J4 X9 |4 N7 C- G$ a# hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 |3 T& [& t; g5 F- V4 o& N9 x]. X6 k. w6 h5 m  w
]: L( A' w  o( ?* n  d  t! m
let j 0* S1 P  I( j9 J9 e# \; P, |3 Q
let note 0
- u$ |+ l0 n2 pwhile[ j < people]
$ `/ z: q# b+ X( Q: n[2 Y9 K  |& p# T% S( v. ]
if( length (item i
2 ~& [. L) w6 v7 B6 v% x[trade-record-all] of customer) > 3 )
1 S. Q' F/ `* b4 i5 M( @
[
7 U9 E1 W9 e- I/ o: |ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 C0 N3 N6 H9 N& u) ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; P" [1 T/ E8 E( b[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( s. I( t0 B# x. P. T]
- w1 _/ _& F% C]* j, C6 @. T$ U0 @) m
set global-proportion note. e* _' n- X+ K% \
]8 K: {# h* E5 \, |8 Y! A; z
end
% w' s; ?. B% K3 U5 C" B. g/ q! X0 E3 o2 l6 M
to do-trade
8 X3 Y& t4 M7 p# P3 C;;
这个过程实际上是给双方作出评价的过程* [9 k+ {, K/ C0 @5 W0 O: T" [( \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 g! l) _5 ?, d( v/ i% S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ X( w7 \) r2 D0 D: b/ v  yset trade-record-current lput(timer) trade-record-current1 g: V# Z5 @' j; k/ u% O/ q  }  Q/ c
;;
评价时间
7 n& w6 _7 s* q$ r4 ~ask myself [
; J8 e3 g& G0 j& Z; [update-local-reputation4 P3 u( P5 v# D$ r; e$ n1 X. {
set trade-record-current lput([local-reputation] of myself) trade-record-current' I: {, I& e6 n- L* s0 f+ X
]- C5 b1 P8 K: X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( d% Z" y' e8 u7 z
;;
将此次交易的记录加入到trade-record-one
6 F9 B' D8 ]' i& l9 d( e2 eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 @; ?* h# M; w
let note (item 2 trade-record-current )
3 m3 M! @6 g/ o' b6 E  iset trade-record-current' B6 P% e+ s0 [/ A" S
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 C' q1 l. V0 S4 Y1 l) |6 _0 W/ l
set trade-record-current
2 x) X" d; w- M( I$ s(replace-item 3 trade-record-current note)# u5 B7 V$ I- h% I8 q! \8 A0 f

" K: }* k% g& ?- V! R1 {/ Y

$ P, Z' s+ _) a$ g/ {% \ask customer [
  ~5 M/ h; _8 P  `update-local-reputation
/ v: q! x4 Z$ j* @# W* ~* T) D) T3 oset trade-record-current
: q8 i" r: q$ ~. F' F; a(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, h. E) g* E! d& v2 ?& c
]
6 _+ ]2 j" i: n7 }1 @2 o
" d0 B7 `; r* d' M7 D

0 Y0 B1 T# q% Z, Vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! w8 U' {& z1 C/ `. A9 K

& l( `6 O1 X- Y3 Xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 H) u8 C' \# s1 M9 B
;;
将此次交易的记录加入到customertrade-record-all
" U' V6 {7 Z# ?end2 i8 O: k/ z9 F% k" w7 D- G- v/ `1 k

' S9 {5 k) O& E. Oto update-local-reputation
% M5 F: E: @6 Wset [trade-record-one-len] of myself length [trade-record-one] of myself
# b# Y0 J- Q& C2 A+ O; x) R; B2 Z% J, k$ g7 s5 z& c/ I+ b/ I2 w
- e/ M( w* A2 Q- K8 m
;;if [trade-record-one-len] of myself > 3
: C$ P; A5 c% V( G  W
update-neighbor-total
0 F" P8 n0 X. `;;
更新邻居节点的数目,在此进行
! f- J: t" \4 ^; j8 x4 rlet i 38 w0 C! Y7 W9 n# d) {
let sum-time 0
/ v( x3 p0 C6 `' J0 M, }- W$ owhile[i < [trade-record-one-len] of myself]
# L( X0 r; H3 i, ^: r: Y[
: R0 U$ w7 D: x; l. w4 e" ]; x& hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" w' J5 v/ s" ]3 U; t" b! v8 O) x
set i
7 [# _- J$ T9 Y/ H( i + 1)
$ ?% A- ]' R, ?. @) ]9 S3 m9 Z) a4 f: u. q
]
/ f1 r- x! r# Z4 C! o; @* |let j 31 d9 P, p2 n" q, E# r
let sum-money 0/ Z; C# y. G! {% I/ e! `8 Y
while[j < [trade-record-one-len] of myself]) ]/ \2 f2 w0 _/ x- O2 A
[, H& h/ w- E8 ?  e  m- T; ]
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
" D7 c6 |% D; H2 S4 H) eset j
; {& I8 J+ M1 k/ I( u- g% e: x( j + 1)

$ N8 x0 _- N9 H% A" B! y, f]" m) C2 ]2 d4 N2 E' w
let k 3
3 X1 @  v8 H7 Jlet power 0
# M9 N9 E: N, \  d: N5 ]4 W* llet local 0; R+ t8 c& M4 Z2 q
while [k <[trade-record-one-len] of myself]! \7 p' s' n1 _. w  g
[
8 M, Z/ X0 j, t( a0 K1 @' m5 Fset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
" ^0 U3 F0 Q7 a) G( u8 q8 O( L# ?/ m3 C6 \set k (k + 1)1 W  w0 D/ K6 t+ d# D# p
]
8 ^. E: k& O" W; ?( g; C& M9 gset [local-reputation] of myself (local)
0 X+ n! h% x8 a$ C3 p9 N& [$ Bend
- k! X; F* N; w& t9 E" T4 {" {/ l: E5 w
to update-neighbor-total5 W0 B6 H- a) k7 H" y7 U; W

& t6 K7 z* K+ I! _$ |# R2 Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 ?( g( E2 i# f1 A- e9 ?1 p. o+ }+ d
  f8 ^3 k- r& m( [' u( r/ Y# p( A1 d
end
8 T/ G3 H3 J' N; e/ J* P: g5 L* \% C: x# S' w  u
to update-credibility-ijl
, {, T! f& t- t3 {& E' {9 k0 w! j1 y4 w' m
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。! }/ c, X/ m5 o8 Z- m: r* u1 N' K
let l 0
0 {( B/ d# x8 G$ B' {- |while[ l < people ]
4 K" V* c* h) |1 I  _, v;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
* W/ k, R1 L: r6 u( q[
. }9 g! x0 B* ]( r- J1 ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) [$ T$ S5 f# G/ G, h9 D# [& Rif (trade-record-one-j-l-len > 3)
7 ~1 C2 v3 y5 n" R  _* g$ q3 B[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one5 E- B6 `( g! \' H
let i 3' p) `1 {7 }6 m/ n  L9 m7 l
let sum-time 0+ ^2 [% S/ w( z+ i, U
while[i < trade-record-one-len]6 H" o5 V3 E# K; p  P7 ?
[
- U3 S( s8 {" k: m! A  `  Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ n* {0 U  n& t9 y. r) {8 `! `. nset i6 s* p0 T+ S0 U, s' P
( i + 1)

% ?, d7 c& T+ R3 R/ J" f# G]
+ F" h+ x# T! s6 {let credibility-i-j-l 0
# W8 C; h. L% B# G" X, R% ?* m;;i
评价(jjl的评价)
0 u$ Z& c9 b( Y* P* y/ qlet j 3
: F' N& G: E. W8 R) w  olet k 4( g: q/ |% F3 m( E$ ?. r
while[j < trade-record-one-len]
& g; C- t7 g, Q" d[
% D5 z' ^! _# B$ R- p0 a0 c* lwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉+ P: O+ @' G8 `. A1 A9 x9 g
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)5 K( a+ v! Q) c! N6 ]5 F6 T
set j# x- D) M9 ~: u% ]6 l# Y$ T
( j + 1)

8 Y' V9 Z; F- Y' ~$ b$ j]2 S# {) y( D9 o1 r  n4 r
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
4 _8 `5 q4 w+ Y1 [; R4 u( \/ y, c, `# ~) x3 w/ G

7 E0 S$ R) _$ |0 C! m  J7 olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), z' |$ K  ^7 B# p1 d
;;
及时更新il的评价质量的评价( ~- @$ H" n% }3 {+ }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; [- S. \6 I: G& P- X  K! F/ iset l (l + 1)
/ ?" s6 f: e2 S; E]
5 g6 W* r" Y; jend/ X! x: M2 B- i0 A6 P0 U/ d; \# ?
; K( Z5 S( ~+ ?+ \, t; O
to update-credibility-list
, W4 ~  k' w  N2 ]; X2 ]; ?let i 0( [" s2 n; E! y. |; {* X3 [, h  `
while[i < people]0 N9 f( Y5 w% b
[
$ a# a8 r1 ?6 q6 o+ Wlet j 0
6 ^$ p8 r3 A$ G; Y- e2 z1 o7 Dlet note 0/ E" n1 r- U/ F$ E2 |$ B
let k 02 C0 d4 k1 n) J. w: r' F' A
;;
计作出过评价的邻居节点的数目0 o9 P0 l# y$ t7 s7 j2 {- m
while[j < people]
; b8 B' E, N1 {( |[. r2 h; Z7 ^, U3 a, D& a
if (item j( [credibility] of turtle (i + 1)) != -1)
: C! k" [$ t) K  I;;
判断是否给本turtle的评价质量做出过评价的节点
: a. x' o  i: b[set note (note + item j ([credibility]of turtle (i + 1)))% O# f' I' G" i! x$ \+ S. O
;;*(exp (-(people - 2)))/(people - 2))]

7 H5 k: V7 L% @* n2 W7 _& j! dset k (k + 1)
  m% E0 p% h9 e]
; p  A& z+ l7 l+ w: Hset j (j + 1)4 p# l9 I& y+ _
], n0 @9 D+ W4 \0 S
set note (note *(exp (- (1 / k)))/ k)5 P) s, o* v. y1 E* w
set credibility-list (replace-item i credibility-list note)* L: V0 p$ @5 c/ V- h- v9 S5 N0 M
set i (i + 1)
3 x$ f# _4 @3 M. ^4 C; W6 ?]
# o& r" F. O+ `+ bend
4 Y$ N, u0 t# k1 o
. A/ K1 V+ `. X% V8 r) N% ~to update-global-reputation-list0 j* b+ @. }5 O( F0 `# c
let j 0
$ ?1 |" E2 O# L* _- |9 Kwhile[j < people]
+ ]3 q7 s3 g; Y[4 S6 p& p' K5 t' O# R
let new 01 Z" D! g+ B/ p
;;
暂存新的一个全局声誉
) B' g3 x: R+ T% ?5 Clet i 0! n( B  \0 e. P
let sum-money 07 w" D* C: Z; C) q* a
let credibility-money 0* s; Q5 W, W+ F& c
while [i < people]; ~3 T6 s, S% s& M* b2 r
[" d- q$ s' O. f9 U. U' c5 W# Q9 {- z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 p: x  a  j) T6 J6 J7 cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, }; s9 r: g) S: h5 m* A/ bset i (i + 1)
* S! i; U4 k" @4 S) Q$ H]
% W* u, P- I2 r( [2 l9 Mlet k 0
5 t% X# [6 n% B4 V2 B1 vlet new1 0
6 F( `' G0 x3 T$ A( Q+ mwhile [k < people]
/ M4 f* N. D3 F+ S8 f[6 }' L3 R5 n  Y: e2 |0 _& q: @$ c
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
3 s; d# s2 w2 _/ n& G9 u1 N' zset k (k + 1)- P/ k; Q; v) F/ f, }
]# e7 x3 ^2 T" Q: ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ m% N: V6 P/ L5 ], ~% ]* Xset global-reputation-list (replace-item j global-reputation-list new)
% A" b  I( h$ o8 ]6 e- sset j (j + 1)
# }  V# T/ M5 r5 @9 w/ _( b]) W; g- M7 p6 k3 L& R* z$ L
end, |$ c2 N$ C7 f% G- ^1 O. S; K

& E( T& a# M5 `8 J1 c( [: U$ |! g& |% ?. @# n' D" l: x' v

- C  S9 j& F6 A  w! |4 y( I- tto get-color" W- e3 Z8 `7 e7 Q4 S2 _  s
! V' c, X7 a" I/ k; f. ~; e9 J
set color blue

! `2 r% z' G' I$ n" w3 d* Cend( G( y6 r1 n* r4 R1 \1 K! e9 U; q
  r: a. Z( A+ L/ }, O& e9 l
to poll-class
2 b! |" }, {* P$ {9 ]end9 [, v4 O) _) y. C! F5 O3 |: [
7 I1 c2 ], p  p
to setup-plot1
/ h# G7 }7 V" }4 O0 U& ?8 M0 g3 t; Q2 D! v* v& {" i
set-current-plot "Trends-of-Local-reputation"
- J7 s. `8 Z! B: @7 j8 g, j8 `
& H$ s/ V; E! ?7 `) S
set-plot-x-range 0 xmax
0 ?; A8 T$ v7 V) V2 q
* J) T' s8 @$ R
set-plot-y-range 0.0 ymax
- L4 m/ \7 ^# M
end
, R) s4 e# K  u! J" E+ W" g% S2 P7 k
4 y' `" }9 }* yto setup-plot2+ b0 b& T; H" G: M2 B

: W7 ?* D$ k) e% l2 |  V) D( y  P7 @" k, fset-current-plot "Trends-of-global-reputation"

8 a3 `, Y- F; D/ k" G; v' T# M5 m; n; M: n2 J  Y) @* W: I
set-plot-x-range 0 xmax

. d: K5 ]. W8 h. R) T4 P
8 z1 k( u4 P7 b: D0 L5 w. Qset-plot-y-range 0.0 ymax
; k, r2 y9 |, I9 H- z5 S; _
end
( l- W" ?) K  l0 ?, s' N. u3 B  F$ L1 o$ A5 s/ h5 y
to setup-plot3
: f5 Z3 [. w% |0 r4 A4 j0 Z& R: D& ]2 u
set-current-plot "Trends-of-credibility"

; ?% A$ j! W) X# O/ Z2 J
8 a6 X: x9 \! u0 S9 sset-plot-x-range 0 xmax
! H4 L0 c1 o, h* Q3 O

4 v4 [" a  l" Q" y+ E" d7 uset-plot-y-range 0.0 ymax
$ j' n; ^) p0 r. f7 I% H1 E
end
9 ?" y* d6 r+ f' ^) ~( w  r
2 x) y# `: F* C# E; [. rto do-plots' M7 i% E9 t8 T. h' Y6 @1 O
set-current-plot "Trends-of-Local-reputation"
5 I( Z9 s( G# v# _6 _) F+ u+ Z! M% dset-current-plot-pen "Honest service"( D, X$ R  X' M- I3 B( ~8 z# o) [
end
  @& G' I+ @  B& o) ~2 x
  g1 c4 S5 M# h9 R! u[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.6 t4 E: @  C. g& G  ~
5 h: I$ p8 r7 \# Q" e
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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