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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:
% [1 P6 r: E8 H( x4 u4 yto do-business
3 I8 G  \' |; A( B4 n( }$ v rt random 360
0 T, H* V! X8 y9 o fd 11 t: _4 C8 k( j. c" I. l, i, q6 ~' F& L; h
ifelse(other turtles-here != nobody)[3 P4 b. V" w) V7 }3 y; 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.0 e) y: Q  y4 B! C* P2 R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' w1 P/ E  @1 b7 |9 E3 e   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 h' r, V+ C, y7 h   set [trade-record-one-len] of self length [trade-record-one] of self% ~' _" r- p. h9 O. k1 W2 A4 x& ]1 o4 b
   set trade-record-current( list (timer) (random money-upper-limit))
8 W; m, I, G5 p% a& r, S8 s" z2 f2 M: r- ?
问题的提示如下:2 c8 \: ?6 X* T

, W7 W+ S5 C% M* rerror while turtle 50 running OF in procedure DO-BUSINESS( W, T7 R2 r1 \: j/ z- e
  called by procedure GO% C  F2 O2 U1 G- {" |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ i9 x2 z) l1 d% V* ^
(halted running of go)
& E' M& j) F  V7 A5 [
/ j, \% B( D5 `# [% ?9 ~- T7 Z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~~$ x9 C1 L" t9 k5 I
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: Q5 j9 b* ?9 S; ?0 H( _
globals[/ `* s: [  q( ^4 u# r  ]; c
xmax8 X9 s- x& b- e4 [% p% g$ ~% v9 x
ymax
& k" [& Q2 e% V' c# w* T, B! yglobal-reputation-list$ G! Q8 F5 A, x. A) }
0 k( ~. V5 L) l9 G1 Z
;;
每一个turtle的全局声誉都存在此LIST: w7 a0 \/ J: K* `$ E" H
credibility-list  Z9 I* n( m; G: V5 X( E3 M! p- G; ?
;;
每一个turtle的评价可信度
& K: R4 o6 i0 p9 K4 Vhonest-service
$ z, D* s& b6 c0 f4 H3 \, B. R. I! t; e  Zunhonest-service8 ^  y# H+ m  C- f3 z
oscillation- C. |& j4 M2 d0 M3 Z; }$ H" }
rand-dynamic* v2 t" G; F) D6 A
]
, l7 s8 c2 F8 t5 ]
% G- ?2 e( [- m  C1 Wturtles-own[- c3 ]# {( q* S+ a$ {; o7 R) L2 W
trade-record-all
0 _( l6 V! u2 E+ W6 p;;a list of lists,
trade-record-one组成5 |2 F- O. v  X8 Y9 A$ T. A+ n" w
trade-record-one
/ S- F2 v1 c0 E3 X$ ?. v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% n* \" A4 \) V) r+ M/ H- K' F) _$ B3 M
9 {, I2 t, v7 c  m, F4 Y;;[
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]]# `3 X" }4 [8 \- _9 [& y  t
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]
/ ~. n* x) o7 bcredibility-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
$ d) Q  g+ e3 k4 @neighbor-total! F) B8 E, S2 m4 X& M1 O/ ?
;;
记录该turtle的邻居节点的数目
. g* d% V' P3 Y4 S; _7 K6 U3 Y/ dtrade-time
/ b5 Q& I$ Z  ]& {+ g  X+ g% D;;
当前发生交易的turtle的交易时间0 n$ V% s8 v: ^4 v3 H3 G
appraise-give
! c3 r' [9 p" T$ I, r;;
当前发生交易时给出的评价6 y7 i9 a) X# G) U
appraise-receive/ a1 Q' o/ M: s1 H) _( W! W* k" h& D
;;
当前发生交易时收到的评价3 W0 m- u. P1 A
appraise-time
4 M% G! c' p! O* ?2 O1 F;;
当前发生交易时的评价时间: Y# J4 j$ e. U& G3 u/ j8 w  T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- `8 y3 u2 A! E( o7 c6 Z
trade-times-total2 N: ~1 u* i  I7 J6 F$ p
;;
与当前turtle的交易总次数
, l$ j2 s& S; H7 \trade-money-total/ Y( u# [4 r; W( m! h
;;
与当前turtle的交易总金额- ^* V& }0 v9 L; a3 q/ ?
local-reputation
3 N5 g0 O* S' ]! f, k0 b, j1 t& Eglobal-reputation
1 @3 j5 L$ B! Z2 Fcredibility
% V6 V: |) j: c7 ^& ~2 T* b0 a;;
评价可信度,每次交易后都需要更新0 w) s9 s0 {  X5 ?' |/ r3 ^
credibility-all( W9 S, |# H, X' \3 Y' i
;;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
! h. A' R0 `3 d2 m+ U" Q; m. {# P. c  ?
;;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/ R+ L% z' t6 B$ D6 H
credibility-one
# J' R2 `4 H  a8 k% d+ S8 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
# \0 F( I* f) u! \- e5 F6 Zglobal-proportion" A4 C7 M5 }+ h
customer
+ ]+ Q1 W3 S% {' ^" K# Ycustomer-no
. m1 F8 c0 {5 }& ntrust-ok
5 y/ x& R2 S# C3 H8 Rtrade-record-one-len;;trade-record-one的长度
; e9 }8 R) c2 G' x- ~]
0 f: H" G+ U4 w: i' f3 C2 h; Y" L2 U1 n" g
;;setup procedure
+ M! j6 _- C2 y! v' [
  a/ k6 Z5 E' q0 G  gto setup; a! K6 ~' b! s" P1 k9 Z2 z( d: `
6 T. I9 w- F( @1 n% `0 d
ca
& N* h" U3 E) o! t2 l
3 C' [! N% q/ j: [) x
initialize-settings
0 x2 Y0 C/ x" ~& K7 {
+ Z- z, B- z  d, w" S/ }
crt people [setup-turtles]
1 q1 s+ N$ T" L* M1 Z7 G0 g" a% w0 Q6 i/ c
+ A& Y# d8 T) D. _
reset-timer
3 o; d9 h7 ~( {0 r5 H

8 x" x! g" o% t- E" upoll-class
7 |  V0 m( O$ T0 N& d
' W3 ?- I! P1 m. p/ S4 s
setup-plots

# Y8 a5 x4 r# V6 l) p6 D% }. L7 e6 {2 Y  x5 V6 E+ B3 f
do-plots
  u' u: U5 f: A" }3 M/ |
end6 `# v- I  S3 R8 B" [
* M8 g" B2 {9 ?. U5 W* l' L* x0 B
to initialize-settings
& `' S4 S. ^4 t/ k4 Q( s9 U3 s& I1 F% i1 z1 i! g% j6 y
set global-reputation-list []

7 L3 l: ], R$ C& m' {- r% u0 |3 J5 K; ^! b& L9 T6 o
set credibility-list n-values people [0.5]
$ ~8 Z% o/ d* U6 ^- \" c7 O

( |( m0 l' p. q* D5 _1 B) |" A. oset honest-service 0
% p2 b& z4 y# t9 l6 t$ _$ b& [& h

3 i0 A  v1 ]* t; [5 z  n" K% c% oset unhonest-service 0
" A! B, c! e9 F% g) _+ T, h

2 ^3 K" z% J( y% j7 {' z; oset oscillation 0
9 b7 r0 z! u) C9 @$ i9 H
- D$ ~1 W6 J6 @' U+ a
set rand-dynamic 0

$ D! N9 A" h9 q6 J! ?: u3 f  kend$ q2 K6 {: y, A0 d0 Q) ^7 J! z2 z7 s

* E0 k6 Z  _/ e# |; sto setup-turtles
4 V- W! g- C) R" b, lset shape "person"* d' K0 b0 Z5 X' a5 |
setxy random-xcor random-ycor
+ Q/ K4 [6 b3 Dset trade-record-one []8 z  ?2 n/ P! f4 y$ U

$ D5 J0 K3 k) H5 T* R* Hset trade-record-all n-values people [(list (? + 1) 0 0)]
% ~- Q$ k. m2 W  W5 U: H
, ?6 |7 G+ v9 o1 k: j0 x/ ]$ _
set trade-record-current []
6 A+ p. `+ s. ?% Tset credibility-receive []
; z, r7 V) |/ [3 n8 Y1 jset local-reputation 0.5
0 x6 Z6 k: {6 B, g" ?% e9 iset neighbor-total 0
0 K# f; b7 @# N5 Zset trade-times-total 0
% i3 ?' k9 Y3 I% n+ `% i4 g8 sset trade-money-total 0
' B% }' C* {: C7 A# t. |set customer nobody& l, b" _) h! z# u% V
set credibility-all n-values people [creat-credibility]
' q2 y9 x; q/ s8 H: T$ V- m9 yset credibility n-values people [-1]
) E; a) z0 O+ d: Zget-color
- o4 Y% {8 w2 z, Z+ i
2 r$ y& ]8 @2 m  C1 L- ]" J
end+ V: D; I$ o2 S; U
7 E1 d  G1 C3 u
to-report creat-credibility9 w& r. D1 s0 a4 l* o" ~
report n-values people [0.5]
' P+ N+ K6 d5 Zend
6 ?6 V0 B; ^# m, D+ I4 p$ n4 A  U. v' {
to setup-plots
3 b" V) [8 x9 o. Q' M! ?4 b" n: Z, l- _8 p4 x# |
set xmax 30

- T% v5 Z; i/ F% B  R- ~# d4 @, E7 v. t# _5 O
set ymax 1.0

/ }6 t8 U7 `& E; m7 O3 m# I2 S
$ f8 Q# _7 [* ~) W% [- aclear-all-plots
" x$ }2 u7 q- i' P0 a

# O5 H4 q8 D) j( I9 k3 ?- isetup-plot1
$ H+ I* t# V* Q# {
, A! ?; J* g  m& \5 V) F  P3 z
setup-plot2

, D, d: A2 q2 S: H1 A# g& G$ B$ n8 q5 v
setup-plot3

0 |  x: B, K7 @, i; O" z, mend7 ^5 h& G2 `. L! A4 a) j
) q4 R  k6 N1 X2 ~' g( t2 o- g
;;run time procedures' X5 f3 `5 c! v& l3 [4 V  G! b2 E# M( P
6 {7 \- E  C2 o1 B- c
to go, m6 Q1 U3 ?' c1 S
$ n7 ]/ S/ w1 w' U+ d8 p
ask turtles [do-business]
1 E( `7 j3 h- i5 u
end- w3 d+ n6 _) Y, W2 K

( n% p; Z+ j! _9 d% \# }to do-business
3 C/ Q" Z8 M0 W- Z8 X2 e

' U# X9 ^. I6 Y& l' w7 P2 l% A& q5 o, y1 M3 Q  s) t9 w! @8 B
rt random 360

' h; N& `( p, @' Y% e  d9 o5 `  A) M$ g" g8 K( G2 d! s
fd 1
( T1 h0 ]1 u3 j. v6 z# w( H
+ r/ |' ]& ^  w2 Q/ q0 ?+ o
ifelse(other turtles-here != nobody)[

0 l! |7 y# h* d0 ]4 x- o* I) z2 A5 |* o2 R: z
set customer one-of other turtles-here
& ~% ~; f% ^3 p) }! T6 g- n# n

5 R2 g+ a8 f1 Q/ M$ u% Q;; set [customer] of customer myself
  b: ]# u& Q" G* X( N9 l; V

+ M+ H# ^0 e) l/ c1 u& Pset [trade-record-one] of self item (([who] of customer) - 1)) ~0 i& q4 U1 G  b4 H
[trade-record-all]of self1 x& z. v- k( }) }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% _4 d# t' ~( M# e' z3 N
8 [, b+ ~1 t3 {" w- kset [trade-record-one] of customer item (([who] of self) - 1)
' O( L  u0 I- e[trade-record-all]of customer
& p% W2 r  H6 M$ ~% F

) j# p/ v) X7 Pset [trade-record-one-len] of self length [trade-record-one] of self

6 e- g) O& W% r  V
- ]& y( ?6 W) A+ W2 U5 P$ t- ]. jset trade-record-current( list (timer) (random money-upper-limit))
. p5 b( y: O* r/ ]  a' F8 P, X
4 L  H- `8 Z* `. {. a8 U
ask self [do-trust]
( L2 U" ~; f& X;;
先求ij的信任度
+ U3 z+ W  i8 i. `8 ~) n3 a: ^1 {# H- I' p: Z. C8 |, D$ p
if ([trust-ok] of self)" U; W- V+ @* k+ _. w" c
;;
根据ij的信任度来决定是否与j进行交易[* p2 w8 G# z3 E- E2 j9 _) P
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ g& x6 b* g+ o" i( ]% s* n7 `/ b" {% d( Z# ]5 D; F' `
[

, q; B: V3 E/ e0 h5 P( q  j: M$ A# g* O9 C
do-trade
6 x; S& W" P; T- B: v3 B7 S1 P

( S0 C" [6 K/ h% Vupdate-credibility-ijl
1 Q' X, {) J, p; ^  M% _1 I+ B

; ~6 b' ~  H# n+ fupdate-credibility-list# T3 O: c* R  q2 [

, s+ A& a9 G& P4 [; l/ A6 L4 T' [" z/ z2 W  R. S$ W: e. L$ p$ W/ r2 R
update-global-reputation-list
* S7 M% M! M/ M* f( Y: E) {+ N2 g
3 n& j7 j# |. ~( A
poll-class

4 J- K, b7 l9 g4 C5 F; c5 t
) I8 \) a7 s# `3 d  {4 Cget-color

& b5 K$ g! s/ q; k* u
$ k# [$ S  e8 ^7 ^]]
' M; e8 G4 L1 f" m. \+ l8 |: F
! i6 ^- b" Y8 n% l/ @;;
如果所得的信任度满足条件,则进行交易
; V! L% N6 m/ _( s* B% \& ?) ]; i6 L6 x8 i% v+ V
[

6 {/ W1 N4 o; p. F# S
* P. c, U% Y: Y$ f, s0 S) |rt random 360

/ N1 {' L, E1 g, X0 l6 Z/ K; x8 k7 M! t+ D. J1 G! b2 V
fd 1
  P9 J1 j8 q# Q' e% ^6 |, D5 c0 r6 B

" g" k; V9 B: l8 h]

8 ^1 e9 s' b( Z. m( l+ y
. c1 ?( {2 P% cend

/ c* ?! F1 ]. A) i, U5 ]( J
2 F' m8 a8 j. O5 Z4 }8 H) Qto do-trust
' w8 ^& d2 L) ?/ Z4 e; m/ T* k1 Pset trust-ok False
+ S6 U6 e* P) P9 v5 j( ]& n) x7 G4 \8 e0 c9 {
- [( Z- _6 |- v* ]; }2 k' ?* Q
let max-trade-times 0
+ d+ p8 I' H0 ]. J3 l: Kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; A& I) p2 o/ `* G% ]
let max-trade-money 0( v, C' Z: A- N9 ?
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! N" [9 R* e! q5 Y$ k& Klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). R6 G- m' R8 ~) t9 d. h4 g

/ C( E8 C5 z2 @  p0 K

% M4 ~9 ^! l/ n0 D% vget-global-proportion
0 v  |$ e# b. a% B+ }2 z! rlet trust-value
: L# F) o/ a6 j, U/ Plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  H( [* ~( q- B; L( N* |if(trust-value > trade-trust-value)
6 L1 j: d3 i! }2 }  n! Y3 m+ t[set trust-ok true]' R- D) u  I/ \1 q* N* D+ i+ O
end
" }4 f0 P4 [8 z- s1 N. ~& v
6 ^; E( w' n0 u2 E* N; mto get-global-proportion- h$ J3 c. }1 f1 o) W9 r6 J- L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# c# N( W( f5 F[set global-proportion 0], m: b* m5 H1 F- g( i% l
[let i 0% [( ?# @, d4 h2 ~! n
let sum-money 0- j) ]' V: T- Z# E* m/ i
while[ i < people]
7 M4 }8 M0 S; J3 v" P( y# t. V[
/ W' h: m" |* M* jif( length (item i
0 M2 S& u$ E; O. M8 _& {[trade-record-all] of customer) > 3 )

+ g3 |* K) q# s  v( x/ T[9 n1 L1 F* E7 e4 g& }; k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 C2 C  g% p1 C" C  N+ u]
2 r+ @+ k8 e" w6 S]; J2 w- @2 K: {2 O/ D  A
let j 0
/ Y) L% `: ?" [4 I/ F- H8 r; Q5 N3 Ylet note 0
9 v( g- T# C6 Gwhile[ j < people]
/ z6 t+ l+ T' W5 u4 |[
# A* A7 T- R' U7 }- s% I7 G1 S9 }/ yif( length (item i9 O. ~1 L) {. k. D- F
[trade-record-all] of customer) > 3 )
: f5 p$ s% `+ ]0 A0 [* \$ t, H) U
[: X) k2 d" c* z( B+ c
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 j3 i- D! G! D2 c[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 ]& }0 U9 c0 m# ?
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 B& @2 I" {0 W4 _4 g& }
]
! Y2 D" Z1 F0 Q]
" K6 f1 C4 Y( i. }, W# T# c) sset global-proportion note, j! P. n* j$ T4 e: ]7 Z
]
' T* a0 R: J1 t8 u8 j" Z4 X$ Nend- g+ K2 w$ _* @0 }& T# W

5 Y% E& _, I9 o* p5 f' l$ wto do-trade5 B: E4 l% u. w  \6 Q
;;
这个过程实际上是给双方作出评价的过程2 ^9 ^; o* ~0 L: }! C: U0 v3 V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, _. L+ w3 a$ w1 k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- w3 u$ _* c$ Z  I
set trade-record-current lput(timer) trade-record-current1 n8 `4 \+ @" k+ J/ \/ D; o
;;
评价时间
- o+ i; e' ^  wask myself [5 l& U- L+ N! c0 U+ z5 C9 `
update-local-reputation5 y! b# D* l* y% o
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 a" n5 ?, |: i. t+ G9 s  P]
5 ^. _# j0 f% n. i: y+ `4 wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* j( v. G$ P7 H1 _  ~. K. k; F1 r;;
将此次交易的记录加入到trade-record-one$ c. B. {, d1 e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* b1 S% s$ F0 p+ o; s* y1 t
let note (item 2 trade-record-current )
1 q+ A" F* l9 Zset trade-record-current
$ a2 ?! O9 C1 I/ S8 _  W(replace-item 2 trade-record-current (item 3 trade-record-current))

! m) }7 y* q  m# bset trade-record-current& U) Q6 B  ~! B% R
(replace-item 3 trade-record-current note)1 k8 K9 ]7 A" Q
  ^" k8 T. d! i' ^9 w6 ?9 f

* H7 j+ R$ T# w# m+ p5 S0 t5 Dask customer [
; P, E7 S0 h% A, L$ Z: ?4 \6 H# Oupdate-local-reputation
/ G* K! r' V2 s3 C' a( v, j2 t# S$ Mset trade-record-current
$ o* i6 {5 u0 x! o; k0 b% z/ i7 A(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  F6 S# x1 h7 J6 y5 D8 P]
: i4 H2 ~& U- G' w1 H7 `; p
- l; l% i5 @- X5 f- f! l
0 ?# d9 r8 R+ Z0 e( W
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 }" Q& P5 _3 _2 b
& [, f, C' m5 t) i
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 {! r  f* ?) u
;;
将此次交易的记录加入到customertrade-record-all/ @9 D4 P" M+ u3 Q; N
end! j- P! i0 H" O9 g3 I; o8 ]

9 ]! T' i( D+ _2 _: }to update-local-reputation
1 Q; O* W& H% h  ]# {8 ^set [trade-record-one-len] of myself length [trade-record-one] of myself
' q5 X( f& [+ K8 I0 c: U2 y
+ N' H- o/ J* R) D1 |
4 ^: _& S, e: ^( i/ G4 t;;if [trade-record-one-len] of myself > 3
! n3 z4 M* N9 G9 L4 K- F
update-neighbor-total: q) ^+ F* l3 v5 y4 I6 ^
;;
更新邻居节点的数目,在此进行
4 P/ {, x) r! K; v% q9 elet i 3
% V: M: p" ]3 P/ O7 A# _let sum-time 0# F( |# h0 N6 T" F
while[i < [trade-record-one-len] of myself]
+ B9 z; W2 F2 W% S9 \! U: `[% q' `, l1 e3 {9 L+ [3 u
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( U1 x* P- ]  G  x) \7 [4 ^
set i
* k, R- f. H6 w6 a. H- K8 w. l( i + 1)

8 C  i) k( @0 K2 Q; |]0 ?& P: R- b' C0 _
let j 3
- i6 B) W  k* a' i) glet sum-money 09 i. }, @4 g4 q/ K* S- T4 x- G
while[j < [trade-record-one-len] of myself]
& X" j) f# p, z8 ?) C[
, ^' [  r) S& {' k$ ^8 Yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! ^/ B; n0 V6 o  ^& j. R$ N4 h4 @! Kset j
. D  Q/ U0 G" z5 p" d2 b- a8 I/ V. G( j + 1)

, W0 G; \2 v1 O, K0 H0 q. f]# L/ }5 J% o8 a- X; @
let k 3# q4 C$ ?. A  }3 W, g) j. V8 ]3 C6 Y
let power 07 l/ l# A  K  @5 F6 r
let local 0% y. X& ~' f0 q/ x, Y
while [k <[trade-record-one-len] of myself]
& q# G; l( q/ Y* F# U# R/ G[
/ S0 f# J: B, k: W; dset 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)
" Y( Z1 u$ }( Vset k (k + 1)+ H# [+ ?& v2 f, n, m& P6 i
]
1 v% D' O  n- a' I$ g5 qset [local-reputation] of myself (local)3 Z* [( n; s# r" ^( A, p$ T8 `
end4 I, I( Q2 T: D" n1 n& F) m

$ [/ P6 @8 l9 }+ d5 C% w  ~to update-neighbor-total. F* S: }( t( h. J4 x9 f

+ X% a, r8 A2 R- Z# Z; t) _. {6 [# @* r6 Mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 Y$ p- B- w! T/ j( M1 E4 E( L+ O! a
; a0 d3 F" g' j8 |5 ~! x' p; W8 C

# j# T1 K! J- t- _' Pend
, P/ b6 k7 m* P6 u7 L
$ B1 R6 @' U$ N& [# dto update-credibility-ijl
0 k% m/ }  i) X# Y# W) C) _7 _/ Z& S. i
;;
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。: Q. I' i4 \) @' B/ v
let l 0* ^- }9 ?& C1 T) d& e/ ]; r
while[ l < people ]" z% x" W; \- K, |
;;
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" B; A3 Y9 a5 t% q4 d
[4 g1 Q4 z6 |8 q# \* _
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 j: m# E# i. {3 ^2 Y
if (trade-record-one-j-l-len > 3)
; Q0 R: {1 J$ i* f[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-one6 n& W- r* m+ d
let i 3$ e: Q0 C7 p( g
let sum-time 01 J. N* L- K/ o- I
while[i < trade-record-one-len]* x2 u# o1 q5 c# V5 K
[
/ L& P6 T' S* z5 {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: i6 D3 p) S' _& Eset i
* N& M/ _7 s8 ]( i + 1)
# V' \, D$ o7 V* y+ @
]
4 R& c% L* M, T; |; F4 \let credibility-i-j-l 07 K. F) x& A, y
;;i
评价(jjl的评价)
1 w* P0 ~% M: g: g  t* `) vlet j 38 D7 j- `$ k2 G: g
let k 4
. s- [' b( ]/ l; L% Y0 [while[j < trade-record-one-len]
. y  {( `5 S  S* ?3 S. f5 L9 Z& [[
* e9 L9 Q, O& A; o& B' X! }: Fwhile [((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
% V* A3 \2 i& z. lset 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 Y5 }; r1 @- [- n" X% T* K* C
set j
" D& [6 G3 [0 @  T$ ^5 F" _& d% T( j + 1)

% T1 J* X7 P( z]4 h3 q' [1 e: u
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 ))$ Q, p, t4 R4 F" J* b

% u( S, d2 U6 K4 O" q  b$ F2 N9 e8 V) U

2 b# O- ~6 \8 f: M& S/ q) Vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' P/ L: {$ w6 T1 J! I& k7 ?;;
及时更新il的评价质量的评价! N* T4 @) f# p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 _5 \5 }$ i( F. L- W+ W- g
set l (l + 1)+ m3 V: ^. [! ?9 N) y/ r3 D
]
) y1 Q* ]( `2 S) ?) z8 @& |/ ^: Nend$ r; }+ _# O8 Y
% J1 y7 W$ X! m7 [$ Y* z
to update-credibility-list
& C* s# A, h5 V# o6 ^5 w, v; {let i 0! o0 @4 i4 t, o2 r. H' u" U1 t
while[i < people]
6 j- v, n9 u3 w8 w6 z[4 h" W. ?9 x, C5 P
let j 0& u# O1 M4 ?. v, S, y- }: x
let note 0
: Z0 p2 I% P  T2 P7 J. K; D* ulet k 0+ w- p9 z7 Q( o# \; o' O; x
;;
计作出过评价的邻居节点的数目3 D2 z6 B% ~! V$ Q$ p' k$ D1 n
while[j < people]
6 k8 R, X2 L/ E- v$ S[, e7 X: m' B1 u7 M6 }% _) E' S, n" _
if (item j( [credibility] of turtle (i + 1)) != -1)
# s- q! R) Y$ A+ G;;
判断是否给本turtle的评价质量做出过评价的节点
, Z7 q/ [. A' b% T; ~9 h( e. u7 H[set note (note + item j ([credibility]of turtle (i + 1)))7 a8 I+ |3 ]0 [. i+ g
;;*(exp (-(people - 2)))/(people - 2))]
7 C* Q' j5 F$ u. s5 ~) [2 W
set k (k + 1)
+ g# D: E& l# q# \" Y# m]+ w' D( [+ z9 p$ H
set j (j + 1)
: S, l2 u* a9 ?+ I) s6 r9 q+ b]5 _% _' v" `+ Z7 h
set note (note *(exp (- (1 / k)))/ k)! D( n$ H2 r* r% g( x* V" }" |
set credibility-list (replace-item i credibility-list note)1 ^% C0 N5 f/ ?4 K  ?& C- R$ d
set i (i + 1)/ Q/ C1 U. I% `! v, X& u
]
6 I" \: {+ h8 R4 M8 mend& E& l) c2 A2 [" U% y& B

' B1 A' I+ j/ Y, Y$ Y9 qto update-global-reputation-list( t# C, x% g/ s$ P
let j 0% K0 h1 @; d: u! z" w
while[j < people]
5 P0 a6 _$ [3 B* r[4 e1 y$ h  j4 b9 C
let new 0
) i6 e+ N; F# Q# P% R$ ^! H! o;;
暂存新的一个全局声誉& _- x% j, g7 \7 I7 G
let i 03 L' t; S" U& C& t; K0 v  k
let sum-money 0
. l: {* i2 g% K* q& X6 B% alet credibility-money 0
$ a- u! G1 E. c; z$ x1 uwhile [i < people]
+ _6 }# Q& N. `7 V1 m$ w[1 D) e# T( o2 |" n5 d, i
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); P! n# K$ C8 P' c# G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). o/ h; L1 L. t. j6 {/ S9 p  F2 F
set i (i + 1)1 y9 h4 ]2 H6 Z; B$ B( b
]
$ x9 y. e# Z; a. }5 `! `' vlet k 04 J2 j. I% l$ c
let new1 0( }9 W6 q# v6 s
while [k < people]
" C1 |2 Y( V7 ~) G" S* V2 c" A' o[
1 }. m0 V2 ~& G( B7 l) M- W7 M/ k( dset 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)* |( H$ w! m; `* H; `1 s+ F
set k (k + 1)9 T; z. N; p% y
]* ^( d- G$ O% C3 K, a0 O# P  e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ T8 X/ U4 }* d; d3 A, _7 tset global-reputation-list (replace-item j global-reputation-list new)
5 t' Y  Y- V9 `7 S  Y$ E# Oset j (j + 1)
: W# c5 i* I( j, C3 x& t! _; R]& b' _) b& P7 @' L6 |% I1 z! h
end
- C/ ~+ T6 b+ O- z7 s1 B% k% `' z" W

+ y$ z+ G4 N$ w( v, q
' ]5 w% p: k: V) U, f! S$ k/ a( lto get-color
5 D3 V- B: l# [& |: o- F! T
; G; J' f6 I+ S2 jset color blue
2 n" I/ n  T# W$ F7 q
end: m! E1 Y* i* T+ @6 _9 x
  _6 }! s9 g1 P. g! N! ^; V
to poll-class. v7 X% n, K9 S' l/ W9 G) s3 M: l
end0 S5 [; L2 E1 j( G4 k/ G
& A$ u2 x& Y  v- U
to setup-plot17 r) y& V) v3 G9 f  b" _" h
# N) h" N+ l' p8 a4 J( R
set-current-plot "Trends-of-Local-reputation"

" g% b# l1 s1 [. h  J( ~
# C5 r0 J' X  u8 a1 d1 i. Iset-plot-x-range 0 xmax

* [7 \' z/ U- Y
0 G! J# c6 @( |set-plot-y-range 0.0 ymax
4 m1 m* Y, R- M  s
end- p% n! ?/ f! q" J: s

, s7 R7 V9 D% S( Fto setup-plot2
: t% Z3 A& `+ ]/ `. h$ }
2 U( ^+ _4 S: w  e/ Uset-current-plot "Trends-of-global-reputation"

* D* o' @8 V% w8 q2 l* W" T3 v" n& t; a' r$ B1 k
set-plot-x-range 0 xmax

0 s' V6 B8 ^0 b6 m0 D) c) E2 b
set-plot-y-range 0.0 ymax
$ _" b7 P4 z% W& R
end" I$ i2 ^3 K; Z0 O2 Z

! `# F( b/ x+ P: W3 mto setup-plot3
; B; {1 K+ I  }" O, a7 B4 L9 Y2 ^! Y/ B8 }- e6 ?
set-current-plot "Trends-of-credibility"

& d4 @  u' N) g, s4 W6 R" `8 p6 B3 l5 e- x. ^
set-plot-x-range 0 xmax

  K& P  n  N( \' q) Z
! F# N" R, Y6 g+ kset-plot-y-range 0.0 ymax
: H& p/ e( E0 c% B! N! [2 @5 @
end+ E/ W! ?; }  {6 K8 E; B) H

9 }: C+ r  ]5 M2 P! ]to do-plots
: h/ }/ f) D% z- w1 z' O! Jset-current-plot "Trends-of-Local-reputation"
! [0 u: z5 P7 Dset-current-plot-pen "Honest service"1 U" z1 Y& f( Z. b$ M3 O
end
5 V  J6 v; A2 I5 `- ~/ p$ ?+ m
[ 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.% @3 `  ~9 z- q; \

( x/ M9 W8 [4 g1 I* V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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