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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:
3 L0 c+ a7 R* `: jto do-business " o2 j& \) c) E5 Q
rt random 360
. q3 Y; @7 g' @8 N7 a: W. I7 [1 T% L5 ] fd 1+ }1 Z2 ^7 U6 i+ w* ?
ifelse(other turtles-here != nobody)[( A8 l8 F# R$ Y) q
   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., A+ j5 f7 a/ @% T4 F
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( |' m4 ^9 ~+ K- O9 Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 g/ ]( ^) h6 Z1 K4 c: x   set [trade-record-one-len] of self length [trade-record-one] of self$ k% z  V( O+ t* Y
   set trade-record-current( list (timer) (random money-upper-limit))# T) ~7 `2 k6 M) U' R$ u- j

$ U6 N" S- U$ ^问题的提示如下:8 K8 |- m8 J; m4 ]. l7 `

8 e7 `, x  _$ P4 k2 m: merror while turtle 50 running OF in procedure DO-BUSINESS* O  N0 q9 s( I1 _
  called by procedure GO
4 _5 u$ r/ G0 j" W% d2 IOF expected input to be a turtle agentset or turtle but got NOBODY instead.- y$ S  ~7 q/ f, ]" Q' s; |! D
(halted running of go)
1 z1 ]2 d6 O' u+ \* \8 m1 ]* A! k/ j- W) Y2 K# B' d) n/ B! R( |  X
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~~
& {- T7 ^: Y6 T, `6 {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
) D' l  e5 W) Q0 p5 G( s- W" \globals[
- p2 a& ?& R  z4 R/ rxmax2 Q% `" s8 K0 ~7 L
ymax% k0 o, y  P- [0 L- a9 b7 D. d
global-reputation-list0 V! p" h6 [; b" F$ d

  v5 h  C# B- U% g/ h  ^7 ?9 {) Q;;
每一个turtle的全局声誉都存在此LIST
8 A$ L, j2 a3 U; N* Kcredibility-list
. J6 Q( H1 E4 g;;
每一个turtle的评价可信度1 Y% i+ Y) B; E8 L. u0 J
honest-service: _& [2 v0 j0 ]( h/ }- ~2 ^
unhonest-service
. L" w) e! V) E# W6 Qoscillation8 q5 G5 I+ n) Q' C6 B. `
rand-dynamic
- |' u2 g- B  b9 S; m]
2 m# {) S- ]4 P! G6 y0 E: R# s5 @- \, g$ `
turtles-own[) y' q$ |# U: K$ m# F
trade-record-all
. O; @# A2 U) R& t7 B% {  A; |2 q) D;;a list of lists,
trade-record-one组成- H) h. S8 Q4 L
trade-record-one
- e  U4 m2 @3 u8 @7 T+ r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ f# }4 B1 p5 I; R1 H& `; z/ n/ t: X9 S8 y6 y# b/ c
;;[
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]]' N7 }4 T5 x: D+ @: l2 s2 w) l$ F
trade-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]
, L; E+ J  T  `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
$ \7 O, c- s2 tneighbor-total' t: i$ H( V6 g" X
;;
记录该turtle的邻居节点的数目
: e' W" L; o, r. b" c$ g& H+ ^, e6 X" Gtrade-time
! D" V8 }2 M. I+ s0 P) I6 M;;
当前发生交易的turtle的交易时间
4 X  j* b8 B2 e+ j9 Z/ @appraise-give
) m. E( H2 j, e% h;;
当前发生交易时给出的评价$ f7 |" }. _8 d) a! O
appraise-receive& N# q9 D/ f$ h4 P4 P; c
;;
当前发生交易时收到的评价" \& p. ?: t0 X% L" s0 E
appraise-time7 p4 W+ J3 G; J9 S: C$ T
;;
当前发生交易时的评价时间
0 P! A2 i2 ?0 P1 W! _' H5 E; m, r9 W( plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉3 i! n$ |4 g# @, g9 M/ X. Y# M+ F
trade-times-total
& ]; X2 n4 e7 s5 j: e/ L2 e2 J, l;;
与当前turtle的交易总次数
+ r# N4 M+ f6 l% T* Ltrade-money-total# D* O# ?8 K8 R( Q0 ~* p4 s$ q1 D. S, t
;;
与当前turtle的交易总金额; t& n! \0 D( [: a
local-reputation8 b4 G# {3 S* N
global-reputation
" k7 ]( J& i, f1 d7 ?5 A# Z3 p& Lcredibility
3 i! e4 K" k& Q' J# n' I3 U% T' E;;
评价可信度,每次交易后都需要更新
6 M, L* R, w5 f& S2 Scredibility-all
6 y! K1 @) p2 @. J;;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
, _/ l& d& v( [6 q" ~4 W/ k. _
+ x( D' _3 t& K" 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0.5
* O& i0 J, {" _3 U, _) Y0 V1 bcredibility-one
: l; ^0 I1 l- Z$ T  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
2 _. [7 O3 Q, Q/ Xglobal-proportion
# A) ]% V5 x+ }5 O( }customer
% n; X2 j7 z1 H7 h8 M  Ycustomer-no
8 W, K6 E1 ~. T, ~trust-ok; ~! F/ ?# @8 |5 l6 v
trade-record-one-len;;trade-record-one的长度& _0 g5 j1 T* d; `# {; C! ]1 V
]/ J; x& V" |# d6 `

4 B. B& T' |! Z5 L3 Z; g5 c+ \;;setup procedure4 d, B* N* L, W
# Z8 t( B) P& b! d" U
to setup
4 |) x, g2 u* S2 X
, {/ \( Z0 Q8 ?ca

: P1 A7 B* {* t. E
$ n- ]5 w. B! n  E' j9 pinitialize-settings

& ~% P1 K3 n* A
+ m& i! {( p7 }1 f' a( X7 i" qcrt people [setup-turtles]
0 i: O6 }+ x# c' ^- n5 i6 y! K
9 n$ U5 A* @1 l5 r
reset-timer
8 D4 V9 ?; I/ \: j6 {8 K( S
3 s0 l- F8 p; d4 s
poll-class

! O) [/ N+ z6 L: K. ^/ K6 r
6 M! e$ z; M( z, o! ssetup-plots
3 R% W, x# l( [: l. l6 @

( l: t  Q0 p: ?' r$ Ddo-plots
' {% p( {, Z; T0 O
end
! ?. z+ |) [5 S# d8 {" z4 _6 h. O
6 ^; g( l6 J, d) \to initialize-settings% n1 ^4 H" _: m
0 j9 n/ ]& x4 [* @
set global-reputation-list []
+ W" Y8 f" i" T. |- w5 B
! W" A4 [: x) X9 g' \
set credibility-list n-values people [0.5]

( H. E9 W0 w' x8 I. X7 @6 F) v  ^" u
set honest-service 0

+ M# ?2 T8 n6 g( |. w0 v; {% h5 v" h1 H2 j
set unhonest-service 0

' K; S. P1 W2 R6 O
1 b. b# r7 y, s1 I9 Uset oscillation 0

7 a, x' ]* S" E# L7 S+ N
+ [5 Z7 P; i9 j. Zset rand-dynamic 0
6 z& L! B3 I8 K0 A7 c
end! R# r2 e! b6 G6 i( n* g

& z+ T2 |; |5 S1 j& xto setup-turtles
4 B$ r$ H4 A5 u& r/ J& D  C6 x6 l1 _) cset shape "person"
& F/ C& z8 N7 e; wsetxy random-xcor random-ycor
* A/ F# e0 X- y( U, ]1 b- }" ]set trade-record-one []
  M  }4 P$ r( x* B/ q! z8 U
+ W; y7 Q1 l; ?- [6 x. f
set trade-record-all n-values people [(list (? + 1) 0 0)] - S" c1 |& R. S% T% ?+ J3 i) ?' P/ @) |

$ K; H* p0 U. g# q4 @set trade-record-current []) j1 k. u8 d$ E) r% Y
set credibility-receive []* M  e% o; {  |
set local-reputation 0.5
7 v# v5 y% a7 i: Sset neighbor-total 0
6 q- E  X+ o# C) r7 d' T3 |set trade-times-total 0
% a% d$ k8 t+ U" ^3 Qset trade-money-total 0
: P. r& Y' \/ S: l, P6 Oset customer nobody; w5 t* g+ N8 m5 [2 K
set credibility-all n-values people [creat-credibility]; `# t$ u5 B; k  H1 J
set credibility n-values people [-1]2 j9 L; }  E" Q8 c4 \
get-color. c! p* ?3 e7 V
$ h, A, E8 C8 F4 v
end
" H  p9 I; j$ j/ X# y9 H2 I+ n2 t
. u, m" v2 C' pto-report creat-credibility
4 ^: q% y3 l5 [2 s; hreport n-values people [0.5]9 V. u- _/ O2 H' j
end; s* C9 U7 l9 V' `' S: `
; o# C9 B& f- U' ~$ R1 Z
to setup-plots
$ o1 [$ H% A9 ^+ B; U$ y* ]* J
1 T  L; M; j  |- gset xmax 30
5 |* P) l) o: y: T# o1 B  ~
% v6 |5 Z: L' v5 F7 u- N
set ymax 1.0

/ O6 m0 ]; ?( S" m* g1 _8 [% @4 y2 V; K& d; P9 H5 U% b/ a
clear-all-plots

! D. x* \/ Z6 B# x$ }7 J8 p
3 p% m9 T7 N! `: ]+ [setup-plot1
* l$ `2 \: Q+ J$ A0 Q/ B

% o7 ^2 Q, |5 P) h2 O) N- Lsetup-plot2

5 a$ ^% A6 e3 A0 j. j" e0 x7 q8 C! b) x( t$ m3 U
setup-plot3
, L5 m, Y/ [# r/ u* ^
end9 P6 c( k6 i* @

/ N3 L4 J* S1 w2 E;;run time procedures
! L/ s) d/ m. y6 \% v
. \6 ?& b; H) G9 m: b; w7 b" Mto go
6 i# b% t) U3 _; N3 j4 ~+ F7 @9 S& f3 @. Z/ |4 O& Q
ask turtles [do-business]
' U2 s& k+ {$ @9 o9 W/ Y* |
end& y% Q! m. {+ L6 F
" S8 ?5 D! \5 Z: `7 }
to do-business
0 b( D- q9 S8 s* V7 I' K  `9 y* K

& m& B  ^2 D2 k1 J5 |* `) r- f/ K
rt random 360

% m9 D1 O' e0 X
& F# F4 W& W2 R3 a' _! zfd 1
& m% r7 ]: d8 H, m8 c
; `! q1 X/ Z( [
ifelse(other turtles-here != nobody)[

/ d6 ]# D/ m5 l
& o$ h& G4 G# ^( l7 T9 uset customer one-of other turtles-here

8 j3 u% P+ g7 P$ B$ y2 W# c% p/ Z' d) a+ v' _  }
;; set [customer] of customer myself

! ?0 k8 ^" R! X" e* [
# {4 q  m5 y* B& W" Q. [set [trade-record-one] of self item (([who] of customer) - 1)! o! [3 D4 ?" P5 y5 O  U: m/ _& W
[trade-record-all]of self
! X! D+ D$ N" Q; H$ j! `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 D) V+ G3 ?# O& L, z3 d. C

  Z, X: ~: o) ^9 B: e! z) A7 S! Cset [trade-record-one] of customer item (([who] of self) - 1)
7 N- U# g3 d9 q4 s- F[trade-record-all]of customer
* l' Y6 M8 {( h% ^+ \( ^( P& I) t

" j1 F9 U5 X  Tset [trade-record-one-len] of self length [trade-record-one] of self

' ]3 H4 E) W  `: A9 ^
# Z; s" g' N& w) n# Lset trade-record-current( list (timer) (random money-upper-limit))

. C; t. A( F9 F4 B8 V& }; y* Q" u# g, ^1 W! X$ K
ask self [do-trust]) {" D2 i5 J  ~, Q: M
;;
先求ij的信任度
/ H, O- X. i" }; L; H) b0 a0 H3 q8 z# A+ O+ }, E
if ([trust-ok] of self)2 F: r, F, o/ }; B
;;
根据ij的信任度来决定是否与j进行交易[2 D+ r9 k1 ?1 @: P; _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* S& ^; N0 v" K9 v$ B: Z' r& w! H# l: S# T+ C. B0 I
[
/ [$ o4 X3 s+ K6 q3 g* E: X

+ m* M. g' O5 {, W1 A1 P: xdo-trade
0 l+ v1 K2 r4 V1 j9 h* e& s/ z% a* T& ?

  V7 A4 l) z& R0 G6 r  ~! jupdate-credibility-ijl
& m! O: [/ w6 v- u
$ x$ T  J5 {* V
update-credibility-list# h  h6 Y+ S5 A1 v1 @2 _8 }: n* b
# m+ w9 \/ t$ X. X: {/ t0 v
9 A) S5 I  ^4 B% e1 T  L
update-global-reputation-list

2 j1 y! i* q1 w' v* t5 l
7 z* i4 z+ |3 e( `. l5 R( Npoll-class

- _( K7 i5 m8 m' C+ z  f% w9 ^! u
  y" ]* B2 Z0 n2 f4 c# A1 n1 [get-color
* O7 F1 Y- l' \7 S

3 ^" r+ G4 N. a]]* s2 P  |4 a' Q9 i5 j7 v- E: j
$ t) q, _4 D9 _5 `8 m" v' ^
;;
如果所得的信任度满足条件,则进行交易
# E8 O' R. O/ K2 s. d& T8 R" y5 M) N) `
[
% e7 N) b) u/ |, H" G

) A. Q6 o4 w$ t9 Ert random 360
* U" P7 ^, R/ Y( h: |0 ^
; R! n- J7 k& u
fd 1
% h) v" U( B' I$ l, w
5 \1 u% o6 s4 ?: T
]
' G1 e* r" n( \% e$ Q
. q0 a( e9 S9 K/ C8 l) k# i
end

' Q' N1 R+ e7 I% _2 M6 \$ Z8 U$ q" q, h" g
to do-trust % J& a7 R* ?; E" T/ m
set trust-ok False; h- P5 J; f9 v8 [- N
/ e) W* I7 Y9 H! s& ~$ W
( k2 A3 q( i8 \! n; l: |
let max-trade-times 0
( f- d' w, V. m) N+ O4 W+ l0 gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) L6 U5 ]+ h2 M& {/ [let max-trade-money 0
& ~# R% V# H1 F& vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 |- V0 Z7 k" H8 ~8 J9 n4 B
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ x4 B8 T& f) z! v, W4 q% g9 z5 Q: t4 w# i
" I0 t5 ]- @& N" \8 B
get-global-proportion$ O: i2 K# E. `# Q1 Y' N( L2 U
let trust-value5 S6 b8 D+ [: K4 \
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

+ K3 W% s; H: c, K$ ?if(trust-value > trade-trust-value). m. B5 }: u' @9 R- a! m
[set trust-ok true]9 }$ Z' k$ S5 z( H
end
( r" r' c. |1 B; O9 n1 _2 Q( O% G9 Y
to get-global-proportion) d/ ]3 w/ d0 i! l2 {- ], V- |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ R! X* }7 I% T
[set global-proportion 0]
/ ^& h/ }: g. P5 F% N: k# [[let i 0' l7 y2 u; f, }, y
let sum-money 09 E6 H; h! x  `6 C
while[ i < people]: A9 i- ?$ n( q5 ], J) ^
[
4 U8 l+ F( R6 R& c9 Z2 ]9 e# Vif( length (item i
7 F. `) F8 m7 r2 r[trade-record-all] of customer) > 3 )
/ c7 T* Z4 Y; b, F" `
[
# G& X1 M. L* C1 W& {2 vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) N  ^4 k8 ?6 L5 `& s]: Q0 G6 W) Z# d: _
]7 E- }5 E4 Y$ C! B- w+ f+ X
let j 0
$ F  r/ `- x7 ?! klet note 0
: `, \* H$ f: p1 gwhile[ j < people]7 D5 g+ B8 t( }1 a
[- C' ]  {' b' r* A9 C5 `# K: |& G2 }
if( length (item i
6 k/ r$ _( K* [# J- P6 ?2 ?[trade-record-all] of customer) > 3 )
% P% u7 \3 X1 _+ Z1 B' c
[
/ M) [: R3 }: L! r: vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 s; M5 y/ n( X  D[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 a3 Q3 U% Y! ?" P[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( V  E2 a3 w& [# ^. ~, N]
1 M" w5 y/ e1 t$ [  }1 r]7 b/ Y. J7 d+ v
set global-proportion note
2 z$ e9 g( j- b]3 g: V9 }/ K% ^4 L& M
end
/ v. [1 |3 M  Y- Y, b8 T3 T* v+ q% d2 z: H6 }" _8 j
to do-trade5 e+ f+ U  x3 y' Q2 u* L4 o5 i
;;
这个过程实际上是给双方作出评价的过程0 ~' X( P& R4 w4 w2 B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 X3 s- |1 @3 b& J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 @, P& C# t" |- P3 f9 x" P  gset trade-record-current lput(timer) trade-record-current
- }0 ?2 ^( E+ L! X;;
评价时间' A" l8 u' f" T9 `5 m
ask myself [
5 ?" B, v3 }9 a* e/ j# _update-local-reputation* k$ }4 \( r6 m. r
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 c- U  |+ u2 X* x/ L! f* Q]% T, Y. n& |& E' ?
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- r6 I0 U$ n" v9 F8 @& k/ N
;;
将此次交易的记录加入到trade-record-one9 N7 _9 ]! p6 C, n+ R& @* c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) c  d! @6 F5 q2 k- O
let note (item 2 trade-record-current )
9 ~1 p) E# ~) D. B. x$ gset trade-record-current# [: O2 {& S+ C  l$ t# ]; t
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 n- U# H' p6 P) U7 p
set trade-record-current( m/ o  D; ]1 @
(replace-item 3 trade-record-current note)
/ A3 _. T& y" ~: r5 j. D6 Y+ k. e
/ P6 j* b# @$ Y; g" ?' u5 o9 i
  o$ w' z/ ^2 }
ask customer [
/ B3 ]0 ^! R* A, L- ]0 K; i  K/ m/ Wupdate-local-reputation! L7 \4 M3 E5 B
set trade-record-current
) L0 f; b0 b7 t& `2 N2 [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  ^: _) C& H( P1 j3 O]
5 u. ~. s3 P# T$ o" F8 E; X/ @6 N5 n

; ]# ]7 }. e6 l' ]+ j5 Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: I# t6 l) M$ N7 a- T) B

  D) \0 x0 a. z+ W# Vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ h+ C' g8 U! `" U5 N;;
将此次交易的记录加入到customertrade-record-all8 k3 j% ^. J  @9 b( f9 N4 l
end
; d1 W' ]8 [; s0 _* o  k* [$ ]+ z7 e- o+ ]+ @3 Z$ L
to update-local-reputation% o1 e4 C4 h+ _6 P! J& |
set [trade-record-one-len] of myself length [trade-record-one] of myself: f  q% _) L0 N  X

8 H+ z1 J/ N' k+ ^
- x+ d; {- t0 W;;if [trade-record-one-len] of myself > 3
0 h! ]1 C' z/ J& C# U
update-neighbor-total, d5 O8 M+ \4 t2 h/ K
;;
更新邻居节点的数目,在此进行
2 `9 Y3 B, [+ X2 {$ H3 N# P  zlet i 3, y. {0 N. I7 H7 T% f
let sum-time 0" e! t% G6 |2 n, _/ G$ L' h
while[i < [trade-record-one-len] of myself]
' @, r0 @5 V- r$ i2 G, c[8 T6 E: D) z; \- ]' F( c' n0 |4 i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) D) Q, R, H9 t% J( c- Nset i
. q! ^6 X  W& f5 ?% q( i + 1)

. B, b) F, O8 F. p1 ]6 @]
/ J" o" p4 P% \. O/ G- Blet j 3
( n, H/ f. h* _3 clet sum-money 0
' }' O+ P# i" d$ T8 ywhile[j < [trade-record-one-len] of myself]
3 L/ ~0 ?! V& Q! e# Q; J7 n+ a$ |[( p/ Y# X, h, o7 c! g( h9 ?
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)
5 R8 p" k4 v3 I$ O1 p' Z0 q. gset j
( u7 L& m$ W  K( j + 1)

# i" n% d9 i, R$ }; x]
+ @* `/ D+ f. r0 Olet k 3( o' U9 R* L# D' K
let power 0  b; I( E" H0 ?' @0 N- Q# h0 T
let local 0
" F/ }7 y, k/ p0 M3 g# D* \# Jwhile [k <[trade-record-one-len] of myself]6 h# b4 H6 X7 P# ~6 H
[
- U8 G, }- `  T% I* N# W  {; \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)
2 T7 I8 q+ ^' y; g2 iset k (k + 1), Z  D0 {$ Y/ M& Z  G$ S: m
], I# ~& g$ d+ V( |3 ]
set [local-reputation] of myself (local)& W. L- J/ w# a8 n  k
end/ i3 U% l6 h4 O; a

' b7 t1 R$ v7 mto update-neighbor-total8 G7 A# m2 w; U" p+ ]

: ^) F/ ^6 R! Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; C9 }- K" R0 t" H2 l" N4 `2 M: G. B. _4 h; h

% F3 d) @& q/ O4 a! j6 [end
* K. e) s% e& w- r  C
9 r6 E  B& W+ W; g4 Vto update-credibility-ijl
' s; x( A: G! P: w3 X1 E) I* s! c( J* V+ 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。
3 V; j. Z6 D$ A) R0 `let l 0
( \+ q5 \' N: a% D- T, i% d4 owhile[ l < people ]8 r! q9 B! O4 _# X4 y# M6 h& w
;;
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
( b0 Z' ]0 g% B; f[' d6 G" c( R; W$ ~, t
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 ^" F; b1 N+ |( s: i4 v1 ?if (trade-record-one-j-l-len > 3)
1 B  \9 k( _* o' ?$ ?+ X$ r  \" Q3 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-one
' H- T5 ~) g% H- ?$ Y# O8 G# Jlet i 34 `4 b; e# V8 U2 y, x% L$ B- N- e
let sum-time 0
- d8 h1 O/ t; @) e- f1 o2 F7 Ewhile[i < trade-record-one-len]
8 z) Q% x. }6 X+ U* G' l$ P[
) m3 s5 n9 W3 A1 V; lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: f7 q( Z8 [+ G. l, ^* Y3 Kset i
$ c( N, Q# H0 P$ I( i + 1)
" `+ _# |, {; b) `9 N& W
]$ j1 f* F4 Q7 B8 i
let credibility-i-j-l 0! N; a+ t4 {, P
;;i
评价(jjl的评价)% E% C2 c) P+ B2 p  i
let j 3
  `* {; a, W0 blet k 4
' _: k. o# a" ^) c2 O3 wwhile[j < trade-record-one-len]
9 d- O: t$ N. S5 |  s8 S/ Y[
4 s4 m/ k3 `6 t. A. owhile [((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
0 W3 o9 G1 x+ n8 m/ i0 P! m% m8 Oset 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)
- T" {7 F1 w2 z  ~; Lset j0 r" w' w5 L" {+ U+ m; S: g& v5 A* T5 I
( j + 1)
  y# N6 y4 B2 F; @2 ^# C5 b
]$ r! G. N2 l% a9 H$ d( g
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 ))
' }( c* w7 ^1 Z
0 ?" E* G- \* Z$ p! `* S) K
; z$ ]3 X. m/ B
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 s, K4 Q; ]8 T! F4 I( _, O0 z;;
及时更新il的评价质量的评价- i: @8 P$ W# _* F8 {  I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" j1 R: @+ X; t2 ?5 |set l (l + 1)/ L" z7 j% H$ m* l! G8 ?  n
]/ K' m  O" x8 k8 f/ O1 C
end
3 K  x: m  U& D3 q& M# {. c* E0 m8 {6 T. [! R' R
to update-credibility-list
  t+ n2 M" _, l3 ?5 Qlet i 02 q3 o- @/ t( r  E6 |. Y
while[i < people]
7 Y1 Y1 R) [' K$ A8 n! W' t[
- j9 O7 `6 W9 Q5 L6 h7 ]  [/ L7 Q: ?let j 0; c. |$ A" Y5 t0 x
let note 0
0 W2 j7 z7 K6 c+ e1 d: A/ c4 Klet k 00 `  s. F% C) V5 X  L4 S
;;
计作出过评价的邻居节点的数目  X7 `; d  O* k& h$ }9 H
while[j < people]
# b2 B  m( `0 S[
- u: n- \0 B5 k- \if (item j( [credibility] of turtle (i + 1)) != -1)
- Q! L% v8 Z. ]1 N4 e;;
判断是否给本turtle的评价质量做出过评价的节点
  ^1 j* G1 ~  a' y: I[set note (note + item j ([credibility]of turtle (i + 1)))
/ z5 d2 c$ @7 X4 F- X  ?* x7 A7 w;;*(exp (-(people - 2)))/(people - 2))]

$ o" _  n7 Z+ lset k (k + 1)+ `6 F" G7 O9 i; N; ], U" M
]$ o6 c" e% }+ j; ]; |, d* g
set j (j + 1)! ~5 k2 h+ k. Y1 D1 N& Q) `$ F
]# m% B/ C7 z) ]: `% B8 H, W5 O
set note (note *(exp (- (1 / k)))/ k)
. K: S: b* I# ]  ^5 |# K- w* |set credibility-list (replace-item i credibility-list note)
% u+ R8 m! Q. N5 m3 l2 L; q- f' Fset i (i + 1)7 O$ r( ~+ i/ G" @; I  G  B
]& {7 H: w  a9 y, S# s0 k# W4 b
end
6 P& z: s" [' v6 H# q. h' G3 p0 W9 P( O0 g0 }' f( L
to update-global-reputation-list
6 Q! K3 Q( H4 [+ w( M3 V" f" wlet j 0
4 `3 D0 M/ I0 P& fwhile[j < people]% C6 S0 V4 h& x2 G% W; A% M- d
[% k0 `, g2 A6 u7 G1 L: Z
let new 0
0 ~7 Z. e9 n1 `! ^;;
暂存新的一个全局声誉
+ [% W/ m7 `. Wlet i 08 C" v4 t; U  C4 b  ?
let sum-money 0
2 b" Z) f, H' e5 ~- Slet credibility-money 0
2 q  s; V5 y3 c& q3 R" Ewhile [i < people]
  G7 k. B7 A5 ?[
7 i" u9 t8 [7 U4 Z4 F. Tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 c! q' B1 A( o! ?# b1 f# Q* Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! ~" S+ n7 f: B3 n
set i (i + 1)
$ a, F9 Y5 `+ K, f], l& n/ m0 w1 j2 y% W& \
let k 0
/ ?' a: Y! P; b  ulet new1 0% e, v7 u6 y5 ]" D' Y( j6 w/ k, f
while [k < people]; U, Q5 y0 H& b- j5 |
[
' G# s$ x$ r( o5 J+ a. s% pset 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)% o- n* C& _: B; @4 ~
set k (k + 1)
( C( ]/ D% v- }5 v]7 Z* D& U5 K7 s/ R) I7 y5 P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* W, q1 g) d( c- Xset global-reputation-list (replace-item j global-reputation-list new)+ n! x* v0 F: B9 g6 }; y6 j: Y
set j (j + 1)1 T5 t( }/ |9 [  Q( O6 p; A; S; _
]% B* j; ^) s  q
end
. |; H1 s2 b1 i- R/ l( k4 r5 D# T9 o" }7 C
1 t8 b# Y/ r* `0 n

& y! Z# G. [$ z! u0 s, qto get-color
; }/ s; Q. }( r, F  f  a* J7 S6 @! A0 h3 a
set color blue

: k. t! R$ M/ l6 |9 Y/ [end
- j7 @  H0 ^: B( n
$ k$ w$ I* |! b! K& {" mto poll-class" K9 r1 s$ |& r1 C+ g  A, u
end
$ F2 p3 `$ J* m; t
$ x3 H$ r8 |: a! x- ato setup-plot1- P2 C! ^  F& U3 D  n! K
5 K. ~4 l% ?- n8 L
set-current-plot "Trends-of-Local-reputation"
3 }5 r2 B: @0 m' [+ d1 z
8 O' D9 }3 K% Q9 h) t$ ~& N0 O
set-plot-x-range 0 xmax
( H- T; Z* S. D# J# j/ t
) ]$ y4 y4 v+ T% w3 _  d$ b3 d
set-plot-y-range 0.0 ymax

7 h2 A4 M1 P6 M5 jend
7 X) e1 \: z! B" \
2 n' [4 P+ n2 k9 \% N, g2 wto setup-plot2: g- E1 y8 B& ?( E

6 }, {9 l3 w; g( w* W  zset-current-plot "Trends-of-global-reputation"
2 n. Z- \0 f4 ~, t. {( `
: \4 h) Y9 P( o0 p& s# Z" X
set-plot-x-range 0 xmax
# w; @4 c$ ]" `. B$ P8 r9 p8 ~

! ?. u9 z& _- x, Cset-plot-y-range 0.0 ymax

2 u8 `4 v( u/ X1 _' I) S- Aend( }6 a  f/ d& M  M  W+ d- T/ B: m

3 t! p- Q" F. C) bto setup-plot39 e# v/ E- F% h
" h  |) u. }3 j. K8 t0 ~
set-current-plot "Trends-of-credibility"
0 r  `: @6 s$ [4 D% v+ Z3 ^: l* T

/ Z. w* a2 _! p  c8 f1 O2 s6 bset-plot-x-range 0 xmax
' ]% O/ ]$ j9 F* _: o9 |
  s5 O% @. j: M& |
set-plot-y-range 0.0 ymax
% V6 l/ I1 [" c' k/ d) B8 v; F
end% B9 Q+ s1 V: W; M6 H
5 l" W" z$ M: V( O, n/ c7 M9 Y
to do-plots; i5 c5 C. T4 V, Y
set-current-plot "Trends-of-Local-reputation"
- C; R* T. ?$ A9 k1 Wset-current-plot-pen "Honest service"
; x2 j& ?/ x% s6 a) i6 M) s" jend
! H% A4 c5 o) H: q* U6 P; _
1 w3 z4 b9 X7 J) q: J7 [2 r3 ?[ 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.7 m: l4 @$ a; w6 x9 p9 m. p
' z. a. |2 _$ O, \+ q9 N1 u5 _
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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