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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:; W9 i$ j! K, W& j- D2 G
to do-business
  u) I3 r6 x1 }! w( N2 w& p9 j rt random 360
4 `# x, H" o- T4 s' H9 v fd 1
+ @8 b: @, F8 Z% o3 F ifelse(other turtles-here != nobody)[
$ L. v9 |/ `: a8 D$ S   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.
; W. _! d& c2 W% I4 G" f- M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 |8 Z/ y8 _- G' h0 |) r   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: u9 o6 _, _0 B& ?
   set [trade-record-one-len] of self length [trade-record-one] of self% U4 p( {+ m) Q5 ^9 W0 x
   set trade-record-current( list (timer) (random money-upper-limit))  _& ]$ l$ k; z; a3 G7 @( V

. I; t$ K3 s7 e6 x$ Q4 |$ {问题的提示如下:
$ _. \/ s, L& F- B2 X& o+ \7 G; M/ p! p# W, |8 ~4 v, |
error while turtle 50 running OF in procedure DO-BUSINESS+ P$ I" H# S( K3 Z3 T/ ?& N
  called by procedure GO
4 h5 ~6 O5 d. i6 fOF expected input to be a turtle agentset or turtle but got NOBODY instead.! y8 R7 l. M" D% C  t0 }
(halted running of go)
0 f' `2 H# d0 y5 M
! z0 ~8 p" z$ r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~~& S) K! Z, ^7 G1 H$ W7 h* e5 Y
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: |- t7 ]7 `: Z% W
globals[7 B3 N1 ?+ [) _, u0 B/ l' S5 G
xmax
4 k6 i8 N) R# I7 h9 H; {' k5 Kymax- U: p$ ]9 X: S) K$ ~  n, S
global-reputation-list. p& s9 g$ ]/ X' x) I

& _# z/ G# I* {* ^- C# ^  z;;
每一个turtle的全局声誉都存在此LIST6 q3 \- m5 ~6 @
credibility-list
) q, l5 B3 t9 h;;
每一个turtle的评价可信度
( C9 m- J' D# F8 m! c( Lhonest-service0 ]6 N) f1 S1 n4 F/ u( b
unhonest-service
* N" u. R( g  }+ Foscillation/ m0 b" b; g$ r: ]
rand-dynamic1 |) d4 _# h4 ]9 ?' b, s) f" {
]
; D; J5 I! ~, ]3 U& Z. V' b+ i- ~
turtles-own[) L& Y4 W4 i' _7 _( ~
trade-record-all
) j+ F. h: c* H% W0 y;;a list of lists,
trade-record-one组成1 Q+ H! i/ k& ~6 }5 \' Q
trade-record-one
; ~) j/ {/ X4 i6 ?! _6 b+ @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 \" e6 w1 {- D; [
; l' s: {2 u! G7 W: x; r: Q
;;[
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]]
; G/ q; C% P1 d: i8 o3 G* ytrade-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]9 _) j: H* A+ Q) U& x6 `
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# K7 `+ c5 \( C3 B, {$ ]' F
neighbor-total
3 ]$ o: y: R( O# G;;
记录该turtle的邻居节点的数目
1 F' f. }3 M' |8 L* [' U1 htrade-time2 B. b' o% l& \# ]4 h& L2 c0 _6 }
;;
当前发生交易的turtle的交易时间
, L# Q' G7 k/ D* tappraise-give. `. i5 r) o/ d2 \# o) D
;;
当前发生交易时给出的评价5 i- n& g3 v" Y( Y' N! o$ ~
appraise-receive
  v/ {& J. `8 S% K, T$ C;;
当前发生交易时收到的评价4 j; L" T+ G7 u6 R
appraise-time
7 a1 B- W/ p2 T8 j;;
当前发生交易时的评价时间
3 ^0 ]9 r% i0 y5 v/ X: x/ {8 `local-reputation-now;;此次交易后相对于对方turtle的局部声誉% Y; f2 O1 A  r3 P, X7 e5 ?
trade-times-total
) @5 M8 w) ]; i/ h; m;;
与当前turtle的交易总次数
9 T" N  R! f1 F' }. `6 N8 \trade-money-total. Y/ K. `( N. X" R9 ~; A' e4 w
;;
与当前turtle的交易总金额
" j. |$ E, e, v3 P2 j. [0 Qlocal-reputation
/ y4 O4 `% y* y+ D# n8 jglobal-reputation" \$ u6 X( e% x) ^
credibility
4 M7 p, J- c8 M3 D1 o- |% k4 n;;
评价可信度,每次交易后都需要更新* W' [( N7 g: u
credibility-all
4 h( ^/ W2 D7 \1 ?" c;;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1 R, `3 _2 Z; v9 D# c" p7 h/ F
% `: t. e& }3 Y; g' r1 h
;;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0.5% ]/ D* a' f& L7 m9 \
credibility-one
( N. n3 C9 J  c- x' n# N;;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
1 {3 R5 E" c9 l% T* U# Vglobal-proportion
" l1 S" P  S4 V+ n) g, Ecustomer( `# O$ a8 E7 e/ \( ^& \' }, L
customer-no
0 S, g- O( H6 ?8 t/ |( y2 ]: M. Itrust-ok
( Q6 W* ~6 A- x/ @, }' \, f* ztrade-record-one-len;;trade-record-one的长度
' N  `( a+ f5 x+ y]- G( ]% ^9 L% e/ e# T

+ ~5 ~* w3 Z2 c5 x$ E;;setup procedure5 Z8 k2 n" C. z& z) \

  ?4 _8 X+ L7 _% w9 fto setup  ~1 r+ ?5 E) ]# x& A8 \9 R

9 m7 n$ ~4 M1 y: n: W/ [, D- jca
7 ?; H" Q, D3 C  b6 ]) S) B

, B2 Y, V3 O& m2 P' Ninitialize-settings
- K% H9 n2 I  L! Y2 O; n

9 a- ?2 q9 w3 b& P/ D$ @crt people [setup-turtles]
$ M- S6 \" M( ^- p. S& ~

0 C, v* S) d! \reset-timer

# F- W2 j8 N& y! D# z5 V0 r; y) F2 J2 g" s' l$ J: K! z; Y7 o0 N
poll-class

5 W' ~- e4 n# i! S, k) x9 l  f% J: f5 w
setup-plots
$ B  _* `& A8 l. Z$ g' Z
5 M4 K. Q% t# k" I
do-plots

  j: m$ K& b7 Y% Gend
! O+ A% P& i2 w0 E, s$ L' q, f* k
$ f2 X5 X$ ^# x" I, _5 v  z# _to initialize-settings; P3 A, ?9 T# ^- ^# q
( m; g4 k" N! ?* {8 q' ?
set global-reputation-list []
+ E; l" [7 J) d
4 e8 u% Q: a$ x
set credibility-list n-values people [0.5]
5 Y  |9 L5 M$ z' }$ x# v; F. _

. `. U9 h& W! P4 F# o6 o; z8 \set honest-service 0

; U2 T4 h' s, b( y2 L2 ]0 W9 b; f: g# Y4 B: X
set unhonest-service 0

/ |3 x2 Q4 V5 V: ^
8 ]' a' V4 E, I. {9 H( y8 [! o  Rset oscillation 0
7 B0 W  X" C2 o5 F# M
; U7 T/ {5 D' m4 W4 c' C; H# f3 G6 X
set rand-dynamic 0
( F/ `. p" D1 i
end
* ?9 n! w) m  e+ h( D+ e# m- ]& D. k3 ^: V/ A
to setup-turtles . v6 a* x  ~3 T/ v
set shape "person"  s( U9 b! C" t
setxy random-xcor random-ycor  A5 g3 j# F6 k" H% b
set trade-record-one []
4 B$ Z2 n/ B$ w0 l
+ f4 m% m9 b: m* f7 ?3 P, \1 n" a( R
set trade-record-all n-values people [(list (? + 1) 0 0)]
. a. e% ]+ L% W' U" ^
5 \# Q9 j' n  ?0 c
set trade-record-current []) N3 U  `3 T1 s- d& N" m
set credibility-receive []
% F  J4 Y2 g% I! x/ Cset local-reputation 0.5( w8 K2 R- g0 F- D, w: W! x
set neighbor-total 0
  [* E& G4 o( [0 v. k! vset trade-times-total 0
6 @- g3 n) t0 W' aset trade-money-total 0
' y# p# W: o. b9 ?$ ~& S- v& kset customer nobody! _* \* e. j6 @; n, k; x
set credibility-all n-values people [creat-credibility]
7 v* Q  O& L  kset credibility n-values people [-1]
1 b: T4 F1 ]/ P1 c9 Fget-color
# l9 c: e$ L, Z5 z, J

0 u9 L/ p3 `# {0 N: J3 gend
7 u& j$ @& a1 ~5 c8 R( `
7 r9 }+ v+ |; n, }( s6 M; b$ [to-report creat-credibility
% y1 {! h* _7 \1 xreport n-values people [0.5]# a/ E" ~  ]. V, B
end" L2 y. ~+ D- f$ }1 s

3 m2 g  g4 m3 ~8 R' C+ X) R1 Zto setup-plots
4 L2 _# U9 \0 ?, M5 Z, q/ {  }
" v1 f  `& V% W* i5 G# l! jset xmax 30
; ~2 ^; a% G! [
6 r& g+ y, |# W; i
set ymax 1.0
9 O( S3 K; ^& d" h; x) l2 K/ I. v2 k3 o

& F$ _4 L: n  x, d' Hclear-all-plots
: t& x- n. g- {1 @* [

: M4 |4 h& A1 Y& x6 O9 g3 ssetup-plot1
6 ]3 p$ u6 h$ u! z! J1 o* S, B

/ ~9 C5 M" Q2 ~+ g$ Vsetup-plot2
) {8 }5 ]2 `- C( F0 j
2 ^; p  P6 T- p; @0 a! K4 z
setup-plot3

8 i. m* N" ^6 C) r2 ?8 Q# H& gend8 v9 Q( k  _' N- o7 `6 S

. T# I) I% j% ^9 k;;run time procedures$ D; ^: ]  _/ f  t- e0 o0 B7 a
0 a8 ]! T8 J1 P; d" r) v
to go) O% O" S, B5 ]4 Q  M8 E

0 c- L6 j  R$ f1 S2 sask turtles [do-business]

0 `$ H! y+ a6 U5 ^$ P' m4 e6 Vend
9 Q2 \$ n" K, `0 \) J* D6 J4 s
to do-business # M- g; b/ e* j; B

2 B; x  D/ R) i! ^) [' N  F/ t: q  U
rt random 360
' C1 C* c: O& i4 P% \- L# J$ Q& F4 D' j
+ s+ j, q2 D8 w" \: n( e
fd 1

; D& x9 [( @; p% Y. u8 p+ Z4 D$ a. ?  s0 Z- n0 Z# M, I, n5 ^
ifelse(other turtles-here != nobody)[
" x; S0 v; Y  d- W3 u2 i
+ @- G! |/ F5 D. x. {9 n
set customer one-of other turtles-here

4 K6 b: N7 m2 Y. n5 i7 n6 c* x+ b% h
;; set [customer] of customer myself
, \) ?( @& U& z$ y
' r" P! z8 l+ }' k9 D9 f
set [trade-record-one] of self item (([who] of customer) - 1)3 k0 v9 A4 [0 ^1 _  J% N
[trade-record-all]of self
! ]9 ]. a  `9 H& B) \/ u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' n( m+ Q1 N( `6 I$ P4 E
" ~- B; d# z, kset [trade-record-one] of customer item (([who] of self) - 1)$ S6 O! @2 M# g- ]% P
[trade-record-all]of customer
9 k! ~$ m, L& O

: b, s4 E  n5 |# V2 Sset [trade-record-one-len] of self length [trade-record-one] of self

( y8 k, K# u: x5 [8 q$ H' Z) Z, r( v7 z! U" @  J4 a* _
set trade-record-current( list (timer) (random money-upper-limit))
4 ?4 c7 ]) R" P2 j9 s

1 j1 K5 `5 Y& I+ @$ rask self [do-trust]
4 T, r' N; ^& R8 @;;
先求ij的信任度
( P+ m' v7 p5 n1 a3 r' X( |. C3 j1 M( e7 D& h
if ([trust-ok] of self)9 _# R: p! V' L. x. C$ s; x4 ^& S
;;
根据ij的信任度来决定是否与j进行交易[3 Z1 R% s3 }2 D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* i* W0 T% }. k! K, v) q1 B; R) b4 z- q6 W
[

: |% [8 |4 m4 o& W  |! c) y2 V4 H* ~; ]4 E. B
do-trade

  }( ^8 T8 G4 h* q9 }: v1 w5 `6 N. F
( D. a3 g- w; T( K3 cupdate-credibility-ijl

  a' \" b" a" {- E8 D/ a4 Y  m
+ \( a+ F' e. D. _$ m# Pupdate-credibility-list
7 N) c6 Y  r3 I) P# \
, y# {$ l( m* ^
/ w+ X9 \* T0 S+ X( F& s( o
update-global-reputation-list

% [4 z6 \+ O6 k5 N  `6 M: l& G6 `" U0 }' {. O. h0 K
poll-class
( Y3 V6 K3 J( Y+ ?- U
3 ^- N* P8 ~. F8 D8 u2 d7 h3 T
get-color

4 q; Y5 g' j% `$ s. n/ X9 d( Q9 _$ i- D7 s6 Q- f- c# U! i
]]
3 m' F% N; ^9 a
; Q! E* i5 @9 C7 k& g( i# ?;;
如果所得的信任度满足条件,则进行交易  @- T4 r' @" K( ~6 i, P( B  i

, x# Q1 f# O1 y' E! N, N: u[

' A4 K1 o/ n% O' k
+ j) G+ c( n+ S# G. z4 q* h2 ]rt random 360

! H/ T2 u) M6 |. q8 C: Z8 Z
, z8 r9 U, O0 _3 E, X- O7 }; Dfd 1
1 H4 c) t% N8 C

5 y# q6 G: Z6 G/ y  r! G]
7 J& b( v8 Y9 R3 Y/ G9 h  W; y

/ G  q. L6 r6 k$ R4 m% H7 Yend

) I) F! r! t7 X2 S* y5 F. a+ {& z( L. n, D% S# x
to do-trust
& R2 b3 m% y1 }9 Z9 G  n3 \set trust-ok False1 C7 C$ x# \6 l

$ {, D6 r0 N! P* x$ m* }

. y2 N: ]3 _0 Wlet max-trade-times 0  ?& h. L. L, W: O
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& f4 y- h/ [0 n% j0 blet max-trade-money 0
. y! b: ?/ B3 @# q5 v) O: |foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) e; V8 j8 ~$ ?# E  `. p" e8 v
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 v* @4 B9 f$ X. H+ k

' ^4 A9 n! G5 t" f) n' q
5 y4 p3 M" y3 _7 z) P
get-global-proportion
0 @3 t! o3 @0 |" P* }let trust-value
# f0 n( R+ c3 z& o9 b* tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

" Q& c& [/ H, K5 I7 F+ k; W7 L) r: fif(trust-value > trade-trust-value)
- ~+ D- [/ O: O4 ]4 p[set trust-ok true]& _' [7 F; m5 y
end9 [$ M1 R# o% B

, ?- i4 H5 Q( {" f( L" l1 Qto get-global-proportion
1 X* p( v7 K) a6 h+ x  K) L4 aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). Y' L5 s3 d9 }9 c  L
[set global-proportion 0]8 t$ _& l. V, E! T! e
[let i 0* ?8 j% [* w, B# h8 L; G
let sum-money 0
  d6 D; r$ v1 j  owhile[ i < people]
+ q  X! i2 F  F[. ]' q; A0 q+ D+ I) S3 U
if( length (item i* d' i$ [8 ?/ S0 K# o3 j
[trade-record-all] of customer) > 3 )

% k! }) g- W6 I* S[
' y% Y' ~  ?: o; V7 Hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& l: D2 x2 _# L$ R% []
* x2 ?8 R/ y; j$ y* [: ~/ x]; f  q& [6 R, V8 s4 {2 u( H* N# ~
let j 0" z  @2 w$ `6 |* E# q" G
let note 0
+ O; w6 c8 g; T0 m* [while[ j < people]. W6 X- j) Q* ^0 _
[
7 Z) H  s$ b0 @% S" }3 nif( length (item i( l3 Q8 P, P2 I  r9 s
[trade-record-all] of customer) > 3 )
8 N! i! b& y- l6 ?5 j/ d
[3 O( y* W) S4 G' \7 v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' w6 q6 A# D+ Y( E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], |" o0 N! c- ~- l% r& a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% ^& v* N* B' x+ L$ _8 m' k
]
" r! i* B) q8 X9 \]
" j; n' X$ R9 }( {9 E7 }/ Q1 ~set global-proportion note
# r" n5 L# \& M( C9 {]& V: U6 C$ F3 {
end# B5 t& L( [) Y0 V" _4 R

! h& d5 C; j( J: q) H; ]3 ^7 @to do-trade4 o' p2 b9 ^/ K3 Z6 F, v
;;
这个过程实际上是给双方作出评价的过程
8 Y' E* t6 j( Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 W( E2 C3 F% `4 A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& y2 I$ }- }  c* b
set trade-record-current lput(timer) trade-record-current
0 g! h* ]$ B5 {0 g5 k$ i;;
评价时间' u0 n! {8 ?9 H/ V6 ^) I, Q: B9 f7 Z; _
ask myself [+ T: |2 s  a2 c  X  U' M  K
update-local-reputation3 ^; G7 v5 E1 G6 l
set trade-record-current lput([local-reputation] of myself) trade-record-current$ q2 D6 c# b7 A, M& C5 Q
]
2 l% P" L- X& gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. L* m8 i! c$ ]( C. h+ h
;;
将此次交易的记录加入到trade-record-one8 q) H2 m4 W' I6 e' j" [  |
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. X$ c6 z/ D7 mlet note (item 2 trade-record-current )
* w9 Y6 ?4 i* X( }+ `( N9 y& ^set trade-record-current5 k% L6 C, W: g& y5 s6 B
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 C+ T3 G) K6 s3 X1 h, r
set trade-record-current
' _4 }6 O' F; n* S  n2 e4 Q( m(replace-item 3 trade-record-current note)
) n, }( g1 W* K6 G* `4 S5 ~" r+ \% [3 L% c: C" s$ J$ S/ ]
! \2 @9 K  D8 W' d
ask customer [8 A. n9 {; s8 g
update-local-reputation
  B1 j* P3 l4 s# ~8 h$ o; t1 Cset trade-record-current3 z1 V3 v: T; ]- j7 C* q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 H  z1 j# |; N]- S' S8 L9 t/ `1 t6 l# S" B% Q: t

8 M7 \/ O/ x9 P
' h) y" N+ z; ~' x/ [& v
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- J& j( e) }/ t" k, C

8 z* _2 k  V; ~# Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( z, ^  B5 H" i
;;
将此次交易的记录加入到customertrade-record-all% Y4 V+ d+ U2 A
end
# O$ j  M# a# Y; N/ U1 `
; f1 ~% r) K9 Pto update-local-reputation# s: ]2 y6 T  Z( u4 Q' a8 I3 U
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 i& R) w+ u4 }. I3 y: S  G4 Q. O& D  k
$ `5 v2 Q- `0 q8 Z( t
;;if [trade-record-one-len] of myself > 3
# H5 |( F  ^+ w, Z4 y) l( H( s" K
update-neighbor-total
4 m6 Z# Q/ t+ Z) k+ x2 u: g;;
更新邻居节点的数目,在此进行
. d) U' D- M" \& g# Vlet i 3; {3 f4 U: @4 T" K5 G5 g+ U2 Q
let sum-time 0
" ?  ]- f# N5 owhile[i < [trade-record-one-len] of myself]5 q# d3 |" F7 P9 s" m
[
  @! F# o0 z8 i7 Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 g$ S+ |$ t2 c7 f. n! l$ r) V
set i
% L# `1 \0 ]$ h8 W  r, e" E" T1 ~8 T+ N( i + 1)
- q+ b2 W2 P8 p: f  d/ I0 a
]6 Z* Y$ {/ Z4 H. E- f& J; F
let j 3  U( x, Z' f; e& u- C
let sum-money 0& C; ^& m/ Y, v9 g! A! r* ^
while[j < [trade-record-one-len] of myself]9 r. T3 L1 g. {( ]5 P
[
. H  L$ o& L+ ~' j$ \( _; hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)7 q2 K* P% v& u' R9 h
set j2 `  }1 |; s& Q  }) G
( j + 1)

. W: w& |' Z8 [4 x) w* M$ O( c]- ^$ ?4 h* P, q0 }
let k 3
. d6 Y; h5 J5 l4 C( g) plet power 0* d. ?5 K/ |$ U+ L
let local 0+ C+ }& {; h( U; t: y0 f
while [k <[trade-record-one-len] of myself], Z6 d* q4 r+ q+ @9 M5 I$ n! c
[
  X* i" D" j: Y9 w7 o, ~set 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) 7 ~  ^  n7 ^# N/ {- }
set k (k + 1)9 T% G- g) U5 f: p8 b
]
8 Z8 U+ \* H/ z& E7 q" hset [local-reputation] of myself (local), f6 w$ ^( t& _. ~; ]
end
* T' F% a: }# Y/ m7 a! M6 _' b. l% T1 }
to update-neighbor-total
8 e' D( ^3 i2 y- a# U0 i' {+ t) Q1 U8 q( f" f+ x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 |0 O- F# M9 J0 f" E. @8 _. A! a9 v( b

9 D& m& q  w- Qend
0 X" G/ n+ }5 U4 z1 ^( J* W: E/ v% u( n4 T7 |$ P
to update-credibility-ijl : s0 X$ h6 P! X1 c! _, ]
, d6 x3 p- ^3 _" C6 A
;;
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。
9 }$ n, E& Z7 ?7 L' w" r0 ]let l 0
3 |5 y: G' R% a) {7 Z9 i- kwhile[ l < people ]# y4 h8 m" c1 \& X
;;
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
3 g+ K* `5 K* h5 L: k[3 R: ^' {4 {  Q1 a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 h0 E% F% Z, M% H
if (trade-record-one-j-l-len > 3)3 B2 n7 [1 L8 D% k# X7 ~/ Z
[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-one3 V6 W. E8 N  c9 a) j+ N2 G
let i 3
, P& L0 V0 _4 Z' @* Llet sum-time 08 f  K8 ^  N1 B; @$ }( }
while[i < trade-record-one-len]
7 |9 j& A, v5 _# H  U[
7 r8 x+ S, q) V3 z: lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' s4 B1 l9 H( C1 b: W  G0 y" ^6 Y$ n8 M& Uset i7 o  J) F/ u/ j
( i + 1)
4 j! o  d7 b  g
]
, d) @4 c* `% m3 Q9 Alet credibility-i-j-l 0
9 u7 o. J: s  p  P; Z$ X' r/ y$ e;;i
评价(jjl的评价)
1 A* S/ U3 j* l9 f9 {let j 3
+ n% V- j1 X7 Z3 o$ t; `let k 40 U6 |. h- R& c# ~7 J
while[j < trade-record-one-len]* j9 _% l9 `2 _0 k
[
1 E4 L" R7 T% ^$ L2 [9 o  ?; vwhile [((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( \6 l- H$ t7 v/ Y8 }
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)$ H, O+ H* x) v4 j( ~9 @5 H' Z
set j
  |. L- I6 z9 ^/ V' G( j + 1)

- ~  _3 A- _8 B( T$ u) g]
& V. Q) o1 `. |' D# Yset [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 )). m2 _# {; ~6 F4 J
9 C1 I# N; g7 K; R8 s
* Z7 L. e( v! K3 X: U3 a  P+ F
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 _7 q6 w6 ^. {" ?
;;
及时更新il的评价质量的评价/ H; G8 [1 A& I. W
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 W& B; E) U& A* q/ T; y2 K
set l (l + 1)1 S1 V" i. @- L$ L! Y
]
$ o; j3 s/ Y  @8 y/ D: cend( f% M; y! y& h" {$ y

5 Y+ z  l3 @5 r' w. ito update-credibility-list
( R  s* H' o6 p1 ~' ?% [let i 0
0 V6 U+ X0 W. f/ v4 O. N" M" h1 Xwhile[i < people]
' ]2 H, D8 l; v( [& r4 B/ d[
3 o/ G+ [+ x- z, H% z, ~" Q! f+ M5 Xlet j 0
% v4 [; G/ Q$ Z$ o0 [let note 0  ^; w" j3 H3 k% J! y" J
let k 0
; q8 k! o2 u2 q& d- M2 Y;;
计作出过评价的邻居节点的数目$ U: W3 l& m- c( ?4 m7 h* q
while[j < people]- ^0 p- W( Z1 e* ]3 x3 b0 z! S0 v
[; s/ p4 O+ r: S6 z" a1 R8 g
if (item j( [credibility] of turtle (i + 1)) != -1)
1 D/ H# E3 G* B) S& d;;
判断是否给本turtle的评价质量做出过评价的节点
9 Q  u/ G3 S+ F' N( r9 f) v7 \. J[set note (note + item j ([credibility]of turtle (i + 1)))% u9 }5 d0 u; y- q+ S3 t! t
;;*(exp (-(people - 2)))/(people - 2))]
% x- B1 b. i# X' Q' e: {
set k (k + 1)! |* b1 m: G9 V. z' v7 X- ?, F
]) ?) ?7 o$ i7 F
set j (j + 1), D* x! c% L) E7 u" k+ [, W/ g! p
]- a* V' S+ Q% y" t! ]
set note (note *(exp (- (1 / k)))/ k)
1 U5 k) S& D- h2 p( `5 Xset credibility-list (replace-item i credibility-list note)3 p. e; L8 B8 T) ]; T2 x6 b- s
set i (i + 1)8 F+ ?( E5 U- U) r* y" Z- Q
]
& w- t9 E1 m0 n! @) Lend1 q' R* y# I) F5 o( r" J$ ~! Z
7 V/ J8 x9 ~' V) O$ V& o/ U
to update-global-reputation-list2 W4 z6 {, ?1 V. b$ k
let j 0
. k) ^# `% L% q+ z& @# [: A; Twhile[j < people]$ d( t) f8 t3 ?7 c  H" E/ v7 }% h
[
5 E" w0 j! f, _$ Ylet new 02 ]" A: F, e0 ]1 F
;;
暂存新的一个全局声誉" m% _+ o% Q( {- X$ j8 D6 p
let i 03 s4 [4 X+ m; R# c6 T0 I
let sum-money 0. R! w( b. j/ e' t0 I
let credibility-money 0
( V, Q6 r8 ?! O( \; `while [i < people]. [' E  j% ~! l7 r# d
[
1 _9 T: v- {7 s* i- I+ Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 q; t( M2 r3 O8 }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 d1 k) R% G0 {set i (i + 1)
3 S- |* y) U+ b' L5 Y8 a]: T: \3 I  n+ ^' z+ t  q# C
let k 0
8 L3 S: {8 W4 L. m5 Llet new1 09 A! r9 d3 ?5 G! {, h( g- I7 @  I
while [k < people]
# `- k0 Y( L  {/ @[) z! O9 {1 x! u! u% G! |7 ?
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)
+ ?0 J. n; i0 B1 Mset k (k + 1)
7 C, [" Z, c6 r6 o' Q$ Q# G]
/ G- p% A5 y/ T( k+ y2 j8 T! V8 fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + r& [$ h4 S+ k; S& o% ]1 h
set global-reputation-list (replace-item j global-reputation-list new)& b- ~0 A! v$ r6 [, a" r1 w
set j (j + 1): N# _8 y9 j% p8 m' E$ w; K& F
]
& g# c0 J: t3 \- \+ Y- A  Aend8 s6 C) o0 s1 B; l& M4 c5 C
$ A: e+ i/ D: `4 a  V5 r" @
: @1 i' d. h2 T4 x) Z6 t0 N
  A% v3 c# x/ D) Y
to get-color
* ?, z+ S: Q  T6 ^0 L* a
. u' D" _! ~( ?3 L, y2 w  B9 r5 ~set color blue

" v6 z2 q1 J$ J* l: {! |end
6 z. D  Y8 D; O. r! _
( ]. u  j; e& i' _to poll-class
2 `- y& M9 Y$ \7 Qend
/ y/ y0 T4 l) Z% [. k4 K- b
; B" L  U: x) `  {$ `to setup-plot1( o% ]& p0 n( ?" R
+ U3 e7 a7 }& j. i. w" J; V& ^5 e
set-current-plot "Trends-of-Local-reputation"

5 K9 x) Z- I& P
2 Z  M9 K5 L5 ?. ]: q! M6 J% dset-plot-x-range 0 xmax
- E4 E* ~. s" d! G
  m' _1 P. ^1 s/ I( \1 k% n
set-plot-y-range 0.0 ymax

; ]0 ]. M2 _) ?- ^  ^( l  mend4 ^: @3 |+ K" d! ^9 O8 f
& A+ c7 J9 @5 l% A; G( i1 V% J
to setup-plot2* [. ~6 v* R; N1 f
; Y5 e: x* ~0 |* |4 Z8 Q
set-current-plot "Trends-of-global-reputation"
# }& m! Y9 t9 X( ?) P

! j1 Q9 L+ I  c/ J" G0 o' Vset-plot-x-range 0 xmax
5 `* J& N! {$ A- D
% R# I& a$ z9 A; Q# o
set-plot-y-range 0.0 ymax
' Q8 ]$ o& ]8 r
end
$ ]4 E% f# D8 x
2 [8 ]2 w5 P$ ]to setup-plot3; B1 P+ X# p  J5 C' f

: K- \& k- K2 k2 Y7 rset-current-plot "Trends-of-credibility"

3 [* g& o6 p; L/ m9 z( j* @9 r9 C9 b- O1 R2 `* l
set-plot-x-range 0 xmax

& b1 I5 @" [9 c/ p5 A2 u( o6 ^
8 \: \  H7 P4 U( eset-plot-y-range 0.0 ymax
3 m8 K, p- l; d; g
end
& ~4 \  {, j2 I. D
9 X% W% O4 y3 nto do-plots" x0 V! l, ^( z
set-current-plot "Trends-of-Local-reputation"4 K' B7 [; q0 C. g  W& ]$ ~  ^2 q
set-current-plot-pen "Honest service"% T* M; J. C- ]6 ?5 p$ \8 m! ?( l
end/ Y" D0 t% k. Z. ]& |
( M4 o8 a9 E* M, E) u5 m+ q
[ 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.
0 ]) J; Y8 }, E* _0 ]5 ^0 A. k- n
+ J) A7 v5 c" V4 q7 n% Z  x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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