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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:
+ w2 j% f; }% R$ Q' Vto do-business * c, n% ~& [% \# ]# B" p8 }
rt random 360
3 y. u9 ~3 `2 y9 g5 y fd 1
$ c4 h# \* J9 e( T; u ifelse(other turtles-here != nobody)[
9 M* v7 L6 E$ D2 h   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.. Z. r; I% `2 ?" Y: ^- T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 f: S0 J) N& A; V  C9 |# ^1 J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! |$ @& W; [+ Y8 h% s3 A
   set [trade-record-one-len] of self length [trade-record-one] of self; v* o+ U* K) c$ o0 \
   set trade-record-current( list (timer) (random money-upper-limit))6 e; N7 z5 U! ^

  M% j7 j# L$ R0 G问题的提示如下:
+ ?$ h& [7 Z: f. }6 l4 F- d9 N
5 I) |0 {' ^/ K2 v+ nerror while turtle 50 running OF in procedure DO-BUSINESS1 Y3 k) Z$ B3 |9 O% r) D
  called by procedure GO
. u' N1 n8 R6 i" q% H2 U1 T% I, GOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ Z) t3 G' V5 t2 Q
(halted running of go)
# e/ T+ _5 P: c4 H) R) d$ n8 H& T3 N# t/ s0 t9 d0 N1 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~~
: m! |: n5 \. A# }" b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
2 C6 s* F/ }  Z  K$ v1 y) J8 Qglobals[
: ^+ {8 ^! r( n, W( o4 Q: x& [# Q( Hxmax
- G& |& s& O1 Q! Eymax% e3 N* {7 U) H/ \: @( |# g
global-reputation-list; I4 @! b; C% M( i' G
2 ~! m3 e; U1 ~4 {, U4 q
;;
每一个turtle的全局声誉都存在此LIST% a* |  K! w9 D$ R
credibility-list
* E1 m8 a/ k9 o8 S;;
每一个turtle的评价可信度0 _9 T# D! D/ D& N
honest-service
4 I4 t. l: }5 b( {6 }% vunhonest-service
5 Q1 W* J- K9 F- ~, poscillation  S+ f* b. U% o# l2 q* ?: v
rand-dynamic
/ L/ G2 t( O0 W* |]
! U. n& C* |/ b5 H, M7 R) H8 C& d; I/ E2 k* `/ E4 i5 P) ^# h+ p
turtles-own[
7 |: W, I1 Z$ H% R9 G" ztrade-record-all4 l3 {  i" Y* a, \' a: t1 K
;;a list of lists,
trade-record-one组成
* E: n* t8 c: H, r. c/ x2 [trade-record-one
7 O) I; \9 c- j;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" O. @, `0 w+ {  l, |0 j+ _7 h9 `7 w- A+ E0 n) K6 `
;;[
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]]! p$ N- }' V5 x
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]
9 ]* l5 e/ H$ b# v2 gcredibility-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
) H; f# X: K% F, X; Y! Pneighbor-total
7 R) J" G- a' ^, b;;
记录该turtle的邻居节点的数目3 Q1 F4 \/ I" U/ l
trade-time
; q" y' H; r4 x" r/ E) G;;
当前发生交易的turtle的交易时间
1 Y- [* ^9 ]" N+ [. e" B& qappraise-give
! L, M( w) h5 }# A& Q;;
当前发生交易时给出的评价
4 D& \3 f  F3 I- I) |+ Kappraise-receive$ `7 j% t' E7 G2 F" \7 Y
;;
当前发生交易时收到的评价
/ v8 ?# t% i7 `8 Rappraise-time
/ k6 j% V: a+ h0 }5 H+ R;;
当前发生交易时的评价时间
  B- I7 X. t; s; `% [local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" p2 t' o) L; dtrade-times-total) A" [$ ^/ S1 \3 X  R$ D4 C
;;
与当前turtle的交易总次数
' P( R+ h6 O9 E9 M. k- Ztrade-money-total) C1 v  s$ W/ Q
;;
与当前turtle的交易总金额2 m: I. W+ s& R% u+ `8 _+ v& h
local-reputation
$ ^! l1 Q' ~$ {) xglobal-reputation
* H! `% v6 d1 w/ _* J% ucredibility
9 `* F5 M8 a' G6 u! U;;
评价可信度,每次交易后都需要更新2 z! u/ G" }; I! O5 Y
credibility-all
" s8 Q( v* ~( s6 Z. d+ L* A;;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+ @% n2 P( H% Y* [3 r7 M: m
+ }. ^( P1 t* B7 H6 z3 B
;;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
* O1 Q) R& z0 Ocredibility-one7 }6 w+ S' T7 g0 M3 a0 ^7 W
;;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people5 l4 _' x4 K. i
global-proportion' i9 X* T: m: ^# _, j1 O+ a. H
customer
' M. @5 e4 a" zcustomer-no
- M/ I# I* ~9 @5 [* S0 Y( Ztrust-ok6 |+ W, ^: M6 y; x% I* O- B
trade-record-one-len;;trade-record-one的长度$ i* A1 e" s$ X/ c" W: {+ |
]- C3 u, o. W& F8 Q

. F% L6 }4 Q: r3 F3 B;;setup procedure
! c$ u; Z* N& |  Z. P  J- K: l, u
to setup8 x7 X, `! q6 M4 d
  Y5 O- _  B: b5 A
ca
2 n, ^" l% ?. {9 i

) g3 @5 E5 h8 D/ P/ d. zinitialize-settings

& {" h7 G5 D8 S" F
; y9 Y3 m1 x. |crt people [setup-turtles]

! \4 \) W2 [# A0 g
9 M, i6 I3 ]1 t- N, l+ W. hreset-timer

# Q% [" k* v) B" j$ b/ S7 |' p, U# Q8 Z
poll-class
3 O8 j( U/ f2 O7 e2 V3 z1 K
4 t0 ^# [+ K7 s8 y
setup-plots

0 c  ]- }0 d5 B1 j* ~( @$ C  j3 E4 l: @' L4 n; P3 e
do-plots

1 O" B" w5 [1 K' G4 e& w; Pend. k& K- t% c( W0 R8 _. p- @9 |/ {

0 E1 t- f# G* R8 o6 _9 m9 Tto initialize-settings
8 n4 v# h' N0 h, t+ [5 A( d
0 W& I# ~$ \3 Wset global-reputation-list []

$ O& {+ c5 V/ o* D8 z4 R
" B, _1 I9 ?& V! W. R# z# oset credibility-list n-values people [0.5]
- Q% U3 k: d& _2 i

* \7 f+ m( _3 o. I, _. y% s/ iset honest-service 0

( s% n8 G) j. L) g+ w# N/ e9 l5 \& \1 s8 V5 U
set unhonest-service 0
! m" T- t# p) ]" i% }% {% _. C
5 L6 \% Y" ^4 H* M
set oscillation 0

  i" V1 ?& x& w0 ]5 T  A) z) T- O7 _2 `2 X3 ^# e
set rand-dynamic 0

1 ]' }+ t5 t2 `4 V' o1 Zend6 y% Z- j4 a+ [  @/ F! ?, c

5 A3 V3 G# o. b, `to setup-turtles * Y# o: E1 [1 R2 M1 N5 J( a* h
set shape "person"
, D' A  Z/ b5 M- p, Jsetxy random-xcor random-ycor
* e2 z6 h' A8 V( y7 [( Jset trade-record-one []" m5 [  `6 z1 ~4 @& N1 d
/ h5 J. y1 S* |; |3 z
set trade-record-all n-values people [(list (? + 1) 0 0)] ; b: [8 H) U1 k

1 l! ?) e) U9 z5 Cset trade-record-current []' \  r( ^- t- I
set credibility-receive []
- Z7 o' w5 w$ ^" {9 O) \) c5 yset local-reputation 0.5
1 t% l& `0 X9 j# Oset neighbor-total 0
1 e/ y# [" p8 L! lset trade-times-total 0
7 H& ]5 [  S5 g' Y% x" U1 g. y$ h" B7 Uset trade-money-total 0
" [  s9 L3 Q2 K& h: P: {9 f3 vset customer nobody
# c* P4 C+ N2 k  H8 A# Jset credibility-all n-values people [creat-credibility]- j( f  a6 [: s/ r, v# d8 t
set credibility n-values people [-1]6 S. C6 A" V" ?
get-color% ~+ C) n% g* G' A

4 y5 A- W* j( K- p2 ]3 b& Aend, }! S' G- n1 i
. e) m$ ~( S  _8 X
to-report creat-credibility* z2 O( q4 S% \/ J5 }/ N
report n-values people [0.5]6 Y. A9 E$ y0 Q
end) {2 B# z  Z. }; ~- j' V& v
! e( y, R9 _! \7 P2 R6 L
to setup-plots# n3 X8 N6 |" W8 S0 Z* ]# o/ C* o& G

7 N- r- K% p0 v0 L% D5 ?! a/ \set xmax 30
) C& l6 V4 f6 z0 i0 I! f* }5 ^
# m0 }" {4 q2 Z% p& z1 z
set ymax 1.0

+ f. E. p  t- R* S' D; e
+ W$ {5 e, z2 @: P+ Q5 V, kclear-all-plots
4 O$ `' e! p) O2 g6 E

5 Y: P- t7 _4 s5 k' w8 csetup-plot1

) ?; i  z5 F. X4 c* Q9 I1 t8 a) F+ C  C4 a0 g0 v$ E( [' F  y& e& X
setup-plot2

4 u0 v  l+ |5 a: P) a, `
' O1 E" C: _2 T/ ^setup-plot3
* E3 @; O- [. J
end1 D- H* Q. K4 A8 {- u0 I' y
( `9 i- v; Z. S/ ^
;;run time procedures
4 v9 M  S4 f3 q# m. H" _% s
8 }4 s. U; H/ S1 H; `to go8 a" I8 @7 a, N; `2 x# `, A

, q6 A* [- S. \8 h8 E5 `ask turtles [do-business]

- k' P) s9 Z: R% }# Pend
4 Q( e4 c1 d8 J3 \3 [2 s+ x
8 \: R% k7 X4 F. v$ @3 B8 ato do-business
/ c! x8 T9 E* T0 _3 q4 p6 h6 V

9 `0 o# L2 ?+ [6 e1 z. y% m
  F* i* @$ f6 a( trt random 360
; S( c9 p: b& d- v& `8 k

, G! B- l7 r; ?3 _  x, V% ufd 1

3 w' H; x- R3 ~. J1 T- r; v3 \( n9 T+ R& D9 R
ifelse(other turtles-here != nobody)[
$ l( g0 _) T% D- [8 r* \: n
$ y5 g! S5 T5 N- @
set customer one-of other turtles-here

( _8 c3 ~: U( ?, }2 h; g5 S& Y7 E4 ~3 T6 P
;; set [customer] of customer myself

$ F6 f  L" X2 j" @- K) W* u
5 k: j- {( a( S% Wset [trade-record-one] of self item (([who] of customer) - 1)# v6 t2 `, D$ y% N
[trade-record-all]of self2 q6 z6 c/ f2 d+ L6 C5 ^( F/ v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% E% U2 u1 B: M8 L

, B( j- y8 {+ W( Oset [trade-record-one] of customer item (([who] of self) - 1)+ K( h8 y6 N" q
[trade-record-all]of customer

- M: }8 `( U6 a4 S# B( S5 g" v1 K2 V+ B
set [trade-record-one-len] of self length [trade-record-one] of self

: Y, y) t3 s* s. n5 l& [. f: B% j, E0 @+ o7 H) p, j
set trade-record-current( list (timer) (random money-upper-limit))

& [$ h# k* |& F5 I5 ]0 a) ^
# x9 M* B2 i/ z% ~+ H3 G" s0 p) |ask self [do-trust]3 @" c1 B$ W: Y7 w. }
;;
先求ij的信任度: a1 m* q. ^9 }$ O5 I6 d+ P% }4 u
6 k* _, L) `2 V8 X- F' T0 b
if ([trust-ok] of self)
" z6 Y  {7 `2 L; U4 N  O;;
根据ij的信任度来决定是否与j进行交易[
3 V( I- q6 ^! A3 i7 ~) Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 q$ O- x8 c) n% I1 y0 z; F, o

5 ?; f) t! k+ d[
& Q6 H- O) K# u, y' K! J8 r- j+ z

( D8 Y+ `, d$ s1 U7 v4 pdo-trade

% Y6 r7 q; K/ Y) ~7 Z
; w' m# G4 U" \update-credibility-ijl
, A3 M5 u8 V8 u7 W" d! F

% m" W9 G) ~- Z9 [+ yupdate-credibility-list- \3 \. S3 F0 C2 g! x: K

4 c$ u0 u1 b0 G# W8 D. w6 v9 M. t" x1 I
update-global-reputation-list
. T8 X( h5 y. I4 V" ~

7 R2 I* C; E- s  z0 F# m8 O4 Cpoll-class
7 g# x* j- M. ~! G& j. n4 i
% v/ v) j# c4 X" L% g) w* M; r
get-color
% b  ^, \% ?5 F

" U& c3 `, P$ B8 F  E/ ^5 k]]; u4 Z3 ]. p9 v
4 ^0 M* R3 q1 r8 Z3 L3 a3 w
;;
如果所得的信任度满足条件,则进行交易+ r3 B; Y4 E' _

8 `% q$ R+ i1 S+ {9 H[

: u' a# O9 \3 G- `% W7 ?; S
# s0 R! L) w9 W* I3 lrt random 360
) t, M) A4 h! e' @. y+ F

/ |% O1 m  l- U: r' N9 V3 O) Dfd 1

8 o  D+ T) }8 J; t, |
; s/ c  f6 L$ L3 G]
# r: p; F+ t8 @" r# o* a

7 _8 ?9 n/ {; i2 V7 G. O- |5 @end

- }  j( s- o2 |4 e$ b4 O- O4 m
+ W5 C1 X! P# yto do-trust
, ^1 I% w, v3 D# P2 ?! Mset trust-ok False
3 F2 L) U( ]# x, g) @% V8 f+ I2 A' J- j6 Y  o5 M5 c, j
: U3 Q! R8 [( Y2 M3 B2 Y
let max-trade-times 0
1 j; c) k) H) O$ N7 ^9 W6 Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: p$ d. F5 v  _
let max-trade-money 09 x+ z+ h/ F& h8 t# J$ h% ?
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 v" ]( N6 O0 v7 Q9 xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). o) W% z$ h) o* y& f
" T4 Z, s; N5 h# S, w3 Z; }

8 P6 @0 \/ @3 j7 q% x- p6 C8 ^  e; i9 Lget-global-proportion' }1 K6 N$ g/ {5 G6 X$ T( |
let trust-value
* O- W8 v- V2 `) x( mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, R/ _8 Q" b( E" x
if(trust-value > trade-trust-value), E5 s5 I6 F7 F+ u- L2 b% V2 x' E
[set trust-ok true]9 Y* A6 {5 z5 a9 |  X
end
+ Q1 U/ m/ H+ f
  c! W5 J; D/ Mto get-global-proportion& ]0 R# E9 v( r+ p7 _: B) C
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' F- _, H9 o1 x" |[set global-proportion 0]/ E' B; ^) g4 z' s  {' P* l$ N
[let i 0: q9 D* u; R/ `* L/ c* L0 z) a
let sum-money 0# _5 v& _5 o0 x7 n3 o
while[ i < people]5 m1 U0 Q- i. |# z
[
/ D9 v9 x3 j- f5 Pif( length (item i8 P& s) q! i4 z: c' o
[trade-record-all] of customer) > 3 )

$ D; _* D( A* j+ b* u2 T8 Y[
& F7 w: ^) i4 _& h) T: o9 l; zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% n$ j! `- V9 s; g9 w( P1 p
], }& {: }" w! Z' K
]
! d  Z- K( L0 L# k; A( {. y- vlet j 0
, J# W3 _2 N2 z, }; N; J9 g$ |5 mlet note 0' K4 m- b! r. u7 \4 p. |+ Q
while[ j < people]0 Q% g% w& a9 G& {9 E' g
[; |4 ?9 g8 T% @  @
if( length (item i) ]$ U% g) G# [8 J$ S+ U7 F0 E* H
[trade-record-all] of customer) > 3 )
" \) f$ _" s( ]9 i2 |
[& e) C4 U1 j' i4 u2 ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. T% X# X- H: R9 F- o6 b- P1 v, t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 S( Q- t- l6 `$ ]( O( Q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 C7 X3 ~; l9 q& i( U
]
! h* w$ g# E7 v: G* i) f- a]1 O6 ^0 A8 P$ A
set global-proportion note$ L% ?* L- y' T+ S8 P
]' \) o1 X& b  q( ]! x2 ?7 \) F
end6 J) p  E* p+ q
% N+ N! D& b" q2 X! I5 }  b
to do-trade0 H4 f1 V2 t+ A  @! S
;;
这个过程实际上是给双方作出评价的过程
+ u7 \5 V2 T: Q( z& i: Q: A$ w& Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' a+ y$ p* Y2 W) vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 w# P4 t$ q0 q% ^6 b+ G9 V& fset trade-record-current lput(timer) trade-record-current
' i" u7 w" M0 T3 H2 G: o* {;;
评价时间
' e- J( Q/ }( \2 G! P9 O7 T/ Y6 D" Oask myself [/ F  _& c1 {! U- V
update-local-reputation7 }5 @. G+ j% ^4 F
set trade-record-current lput([local-reputation] of myself) trade-record-current% }+ c- V/ A+ V, |/ Q" \! h: |
]% J  Y9 m( s6 `* I! x. x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% E! {5 y5 ~$ C# k;;
将此次交易的记录加入到trade-record-one
; R5 M7 ]5 D9 Q' Xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): t1 _* P- _" E. Q- v% ^# O+ F
let note (item 2 trade-record-current )! o4 ?3 g( W% _' y5 I3 {& U: v
set trade-record-current
/ R2 A# P; z1 v  O* R0 F8 _(replace-item 2 trade-record-current (item 3 trade-record-current))
- ~7 ?' v1 q* a- q7 y& Z
set trade-record-current
$ a9 @* b8 y3 a3 i5 ^(replace-item 3 trade-record-current note)' [3 n$ m2 n5 E: A8 K
: Z- ~0 d+ H. @" k7 X( Q( [
- w, ^# ~1 ~+ x% L+ c1 ]: }: V& A8 D, {2 t
ask customer [8 e: r$ s( c6 I( V1 Z: o
update-local-reputation
8 N" ^0 D- j- s( zset trade-record-current5 ]3 i# C2 _8 h( J7 V3 G
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, `' _, G' d$ l7 ]6 [1 `) H. L
]: |" K5 m; b2 c) k& X

; Q7 S/ d! b) G, e3 ^
) |  i$ F. J8 b# W/ m6 w; A
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( i) M  `7 c  S4 \$ w' G+ ]

0 K- M2 n3 ~% p& ?1 j3 kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# x5 k) f' |# [;;
将此次交易的记录加入到customertrade-record-all( e5 E9 X3 r- y) Q' r1 ~3 @
end( i3 Q$ u/ r  F# a  {4 m

, R8 k( A$ z5 Jto update-local-reputation
3 d2 l& s: v/ H% J( N# \set [trade-record-one-len] of myself length [trade-record-one] of myself* l& O2 z- i1 @8 ^% I8 A

+ Z  @9 G! _4 Y, h
' d8 k# f' k. i# [, w5 Y;;if [trade-record-one-len] of myself > 3
; T4 t9 S( C3 o, ]; f! O- e
update-neighbor-total+ R2 _2 {7 n! z/ a* K) P: N
;;
更新邻居节点的数目,在此进行
, e0 ~( C; Q7 Dlet i 3& r  ~+ Z( j1 ^4 }+ b$ `* V( ]2 E0 H4 v
let sum-time 0
& ]7 ^' l" Y  g9 f. A- A- c. x; iwhile[i < [trade-record-one-len] of myself]& o6 L, M/ r( q6 x( X+ h: `7 U# u
[
* e! Z; |8 c1 Kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 f7 D! V5 K  H
set i
" f7 G2 n, I4 c7 K. D8 H( i + 1)

; p1 `, A' H( i, N% Z* x" K]
! S( N/ ]5 D- W( d& P2 L1 b% A) Flet j 3
  B& m5 x7 {/ S$ ]( S+ Ulet sum-money 0
& X( `% C) T8 |" Zwhile[j < [trade-record-one-len] of myself]
* o" B; p' [0 A[
; f$ i3 |; I& k0 Q+ V8 }3 Mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
, W1 B! b6 D4 c' j0 R$ qset j
1 T+ q, h0 y* c7 _( j + 1)

& R3 i4 R9 u) ^0 a) f& u1 z]
5 Y* ^  x+ f% X+ Q# u7 u- flet k 3
4 W1 s( f, q& S3 g% g7 K5 e; qlet power 01 }% Z* c' t1 R. s
let local 0) H1 q9 u5 F  y
while [k <[trade-record-one-len] of myself]
. A9 g0 g3 _2 P& P6 u( W[
( D- d# z$ }7 E  w( Sset 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) 5 D: U- I$ z) }/ y9 _& U- }, Y( _
set k (k + 1)
1 R8 Z9 R. y( o+ t], t' x" s8 C2 F$ D* r$ H2 B& M
set [local-reputation] of myself (local)  a5 E* T& Q% b( ^
end% T. Y/ n9 E' E8 K5 D0 x

+ Z* Q* |+ ]: z8 J, X$ L. [to update-neighbor-total
: h7 Z" }1 h: Y, a
* `: p3 v2 s3 \( Eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) u* m. ^! j% y8 V( B

; B) n* E. f8 X7 L

3 o# m6 M7 h6 ]( gend
6 ]9 B: r2 i2 `  {6 o+ J' w* m# |# ^8 i# _9 I' W
to update-credibility-ijl 1 k3 A* T7 t1 s( a$ C! X4 O4 g, _

9 \( T9 \3 L+ b;;
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 J- R" _) [5 ?! r" elet l 0  I1 \! c$ H% ^1 R
while[ l < people ]
. N% }2 q* {: s, p  D;;
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8 X) G/ e! A5 l5 @6 }9 B, i
[1 W2 |' N# ]( l# i5 ]
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' V) D; w( {/ X
if (trade-record-one-j-l-len > 3)" A( [: v/ ~. H! u. K4 l
[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 x7 c+ k% C2 _! C, |' r
let i 3/ q' O! w& A! I, E
let sum-time 0
# I" t" n% K& Rwhile[i < trade-record-one-len]) ?! p7 s. u# T: h
[
$ d2 \6 o( J: l. Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) ~) a- ~' {3 T" @  H
set i  u7 D# s* f# j% n; m" Z, u
( i + 1)

; ]8 [5 ^* ~: G* \4 m], N$ t+ d$ K9 a) B# A( c
let credibility-i-j-l 02 E5 U$ r: v& g- b- K+ ^
;;i
评价(jjl的评价)# g/ K, u/ G/ H/ @- i; N$ l
let j 3' T; r- n: M% ?' j7 O4 ~1 i6 d
let k 4
' J: E9 E7 |4 d2 s5 A$ ?  Pwhile[j < trade-record-one-len]: J+ }# o9 A0 u3 z( @
[
! h, ]# Y$ @7 u: w  `. mwhile [((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
  p4 L7 P- C  E0 s- h6 Tset 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)$ ?$ C: J. a. X6 O
set j
) C! a! F; w' R8 u/ x0 ]% j( j + 1)
5 {2 J% X" N7 M" p( ]/ z; I6 Q
]
( M( k% ]( d# m' ~$ ^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 ))
9 D+ E& i) [" b* C3 N+ @4 ^9 w4 k" s# d2 w# v! D. k0 u
& ^( ]4 I5 i( D$ y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 K! k7 `" ~5 t5 Q  U$ G
;;
及时更新il的评价质量的评价+ j. a# f  a  T$ q1 a
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 @% A$ Y: A9 f( Z/ t
set l (l + 1)
4 L4 o% k# ~9 M  c: D/ i3 Z( W]
0 I7 @1 I9 t3 Tend7 O( C: M- E6 X, G8 W0 d

) h# M+ S& u& x' J! Jto update-credibility-list7 |' h1 ?6 o3 d. A, g0 ]( g9 D& C
let i 0
$ c' |/ f+ z0 D; A' p6 i$ g* gwhile[i < people]1 Q5 }2 j$ V4 Z
[
) B# T4 X( ?, w& m6 F8 f0 O  v% p, clet j 0
/ l; {, L9 n6 m" slet note 04 M7 l& E2 L# s& k* l
let k 0
& R; L& W4 l- S9 O2 _;;
计作出过评价的邻居节点的数目  H/ w/ M9 \# p: U
while[j < people]
+ |' n3 y2 l8 m6 {" v9 [- ^[
! D. p/ ~+ ?) S- Rif (item j( [credibility] of turtle (i + 1)) != -1)4 A- J# s' S0 L- Z- T- N5 l
;;
判断是否给本turtle的评价质量做出过评价的节点
2 B* ]1 d3 _( F( @4 t# s2 I) B7 _1 B3 N[set note (note + item j ([credibility]of turtle (i + 1)))
7 J( E; c8 o( ~: M2 y;;*(exp (-(people - 2)))/(people - 2))]

) M+ J' H, L" W2 ?set k (k + 1)  u1 E- S; u# p# f% T
]+ _9 l3 s9 {7 D7 w$ w+ p! x& c& z
set j (j + 1)) F4 s) s7 W# b
]0 W8 V% Z; z3 }/ x0 P7 y6 G
set note (note *(exp (- (1 / k)))/ k)% ^0 H# S  h: g- ~. e  _' s. I5 ?
set credibility-list (replace-item i credibility-list note)
; u6 P# V1 y2 e+ `0 k" N, wset i (i + 1)
0 y  t- q  A# U7 b# F]$ i- r; _# J' C% h6 C
end
) A& Z: T9 o, D6 ]- P& n/ g9 |8 R, g
to update-global-reputation-list
  s) f2 p' P4 h8 \# Ilet j 0
7 v. |: {! Y3 B+ s% ]9 W! \while[j < people]
$ I, t$ ^6 V: K[
8 \/ h$ p) u& s9 m7 f5 Rlet new 0
+ k) q$ T, x# t5 L;;
暂存新的一个全局声誉  ?8 g" \# E* z7 c3 F2 U
let i 08 |: G3 e! ]0 Y
let sum-money 0
) ]5 z8 z9 s: o" T" M) a0 zlet credibility-money 02 f; @- A* |* n) ?7 l
while [i < people]
, t! _4 ]6 r6 [7 P[
( S7 w3 Q* n6 t( aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; q" `# c' b/ R. B* @) f- Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 W# P% e4 P8 k9 A/ o. u4 c/ N# vset i (i + 1)
% U% i6 q/ e( v! H2 {]
" m8 D- k% ]& S* l7 wlet k 0) }, _5 W6 D( o4 h7 S
let new1 0
, D8 Z" C0 G; d  ?- wwhile [k < people]
  Q6 s1 D6 C. p# c" Z( W: U[3 u& Z) k% D6 S
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)% `) X; V/ v( g+ i' r3 m. C- H
set k (k + 1)+ g# f# y7 L- H  O9 n
]
/ |3 Z8 |, J/ n# r9 H0 [1 xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# C. l; r2 t( s6 d. {set global-reputation-list (replace-item j global-reputation-list new)
. C$ M0 i$ K2 [0 f% Fset j (j + 1)6 Z* z. }+ r; }' d. t- z  h8 Q+ ]
]
& h. L  W6 X% Z! Tend2 D0 g' e0 q; j6 j
. h, m9 z. F% }: |; x$ E
; ?$ g  C# S# m( d# w

# j' g6 x! x+ J) J( l. D% ], Nto get-color) R& d( \6 P' g

' A; d9 a2 b9 h7 B: ]2 Y1 Xset color blue

+ W% I. u/ N1 }( R/ J! nend7 }$ e& u: U( M0 o
, m+ C; b4 G! V, W  |
to poll-class
$ w  G, _2 C& q+ T' h0 Mend
% t1 Z* B# |+ b  B- {( U: ~
* a& S3 J+ L, ?7 Wto setup-plot1" D5 t! j; J, t- d/ O
* v$ |3 G" J% m$ y3 L6 H/ P
set-current-plot "Trends-of-Local-reputation"
' C4 U2 r/ P# m9 d' g5 u" g7 B+ a+ v

* E: ~3 H; @" `set-plot-x-range 0 xmax

$ `  [: k7 ^  |; U) _* x3 R
8 a2 k) d4 t! ]1 C6 sset-plot-y-range 0.0 ymax
! W4 X6 D* J& x# Y" ?; X
end! \, K( ?7 }3 K. a
5 i& E* G" w8 w  G0 Y* i* H
to setup-plot2) J% G/ P* @1 C. A3 i4 d

0 W+ Y& k( i) h2 i, l& Vset-current-plot "Trends-of-global-reputation"

* u* R0 [& ?! P8 V1 X
9 D. F/ _2 r; zset-plot-x-range 0 xmax

$ R( x5 X+ g. o1 e4 i) ]( O9 f
3 C( J8 g3 S! S% M  _5 Zset-plot-y-range 0.0 ymax
& k# w6 y; `9 N$ ]6 [' V. N. H
end
7 ], w% q; C& o1 n" n2 D& V  I' A$ M( b! E9 I: k  _. ~; E/ b
to setup-plot31 x) d- I* d' a; y, g, R

8 t; y/ B. q  M7 Pset-current-plot "Trends-of-credibility"

: y: [( J8 h( x! z4 p0 S! ?7 E
6 [0 u( C4 y9 L* }# W$ `8 |set-plot-x-range 0 xmax

5 f4 S! L  @% ]  D+ b3 p; h+ `# G; Y, R
set-plot-y-range 0.0 ymax
( V, |2 y2 I: N* |1 r& T% k- S
end( U% t9 T- p- u6 ~
  m) S0 k: K( O1 X0 ^/ b
to do-plots& W' d6 X0 M! M" B
set-current-plot "Trends-of-Local-reputation"' X- a8 g2 [& W) a0 i* k
set-current-plot-pen "Honest service"
1 Q6 N$ L& U# J- {# c5 V/ Tend! \8 `; s+ c; W0 f2 J
/ W/ r* D2 l9 a
[ 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.( D) M) `. `1 t1 U( g6 R: G1 B+ K

; b! G# G+ `9 \1 x. G9 H2 k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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