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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:( D9 D" `& Y& q4 R
to do-business / Q+ d2 [( I" x8 F( q5 }5 v7 Z
rt random 3606 c4 j4 l) f- n
fd 1
. v# Y$ h5 T5 z7 j$ u9 e8 d ifelse(other turtles-here != nobody)[: ~' k0 U" N5 k7 {8 B
   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.
& f( l7 k6 L8 a; h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  R) J/ g! i7 M- D$ w1 S5 ]. o. d   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, B& M/ U2 ~* r& |1 D9 @
   set [trade-record-one-len] of self length [trade-record-one] of self
6 Q# N  t0 o' D* T   set trade-record-current( list (timer) (random money-upper-limit))
9 e4 ?/ R3 u  K0 `0 r! b: j" Y1 F( E! ^5 Z# }' y; O# J8 i9 o6 N
问题的提示如下:
4 J3 k0 p0 e5 c$ M6 F' {0 K/ ^+ ?3 y8 ^# H  E% `
error while turtle 50 running OF in procedure DO-BUSINESS
6 ~, M1 _9 F" ~. f6 T  called by procedure GO' e3 I2 k) y) q8 W4 w
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 c; ?& V6 ]: w. l" ?8 Z' b0 @6 u
(halted running of go)
$ B: P" ^5 y: t- Q
! F4 V  M2 _2 E2 R$ g7 D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~~
2 ]8 x; r6 P5 _- u7 |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7 w& Z4 ]) @4 q5 d% n3 L3 x4 C) Y
globals[9 M0 e- D6 D3 W9 m
xmax
* q6 y0 U% T' X" M8 X" \ymax
: z9 q3 \3 f4 \% b6 mglobal-reputation-list
" r. j3 `8 Q! I5 W* w# o0 X  m4 J6 M( q6 C( ]* T: s; w: ?
;;
每一个turtle的全局声誉都存在此LIST/ V9 L& ]5 C* V6 j
credibility-list
( t8 W5 k3 b0 G! p;;
每一个turtle的评价可信度+ d* t* Z* ?' _6 m* ^+ @6 \: ^
honest-service
. }' k1 \6 j: f$ U7 \unhonest-service
8 c  f* e1 h! c" h# [oscillation
2 t4 @3 K# s, I! i/ urand-dynamic, W; n# {( L; Q/ g& h2 w+ U7 g
]
8 }" m8 ^0 i8 T' k* r/ D" E! Q+ u% t1 z
turtles-own[
5 o4 \7 p4 I9 {; f; X4 }2 Atrade-record-all
% J+ J! a# L2 b/ x;;a list of lists,
trade-record-one组成' O: Q3 V, i' o& B; g
trade-record-one
0 ~# ?4 u6 R* f) A;;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, F: i5 a; `  |

. b8 D1 v4 i6 B. K. h;;[
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]]
' M1 O0 d' c6 P- [) C% [* d. etrade-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]
# H) Y  M+ n1 p+ ]; \; H. J/ |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list0 B4 B9 s! X) T
neighbor-total9 O; L! h9 T% V( H5 \! a, L
;;
记录该turtle的邻居节点的数目
  v" H- R5 w& i5 I7 i) wtrade-time; J/ D0 @* U5 M' j$ S
;;
当前发生交易的turtle的交易时间
7 O: |% a/ B' ]# Aappraise-give
) ]2 B) w2 V, D; [/ o6 F( X;;
当前发生交易时给出的评价" j; V% G4 A- `8 ?
appraise-receive
) Z0 s2 z9 v# o3 ~0 I' H  t;;
当前发生交易时收到的评价
  e8 |" e7 O( g& C( V! Fappraise-time) [2 F5 k8 @/ L& E( u5 n' C  }
;;
当前发生交易时的评价时间
' ^  U8 p, r: M# Q1 n# Q5 H2 {local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 }. N. f3 w7 S! v1 n+ |9 H
trade-times-total" \: o3 |2 j9 ~1 e. [
;;
与当前turtle的交易总次数
" X4 V/ P, }8 d9 Strade-money-total
! _: h; ^. P* e$ K4 X;;
与当前turtle的交易总金额! S; [; T& A, a% M
local-reputation% r: n  S  j1 O, L5 o- p& E
global-reputation# y8 a9 }7 q- {- |
credibility
; L3 _  }! J- J; n. J/ \;;
评价可信度,每次交易后都需要更新. v! ]/ q5 a+ J& }$ ~0 J# p
credibility-all
1 G! W! Q4 D, `' x9 K* }) U;;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
: E7 O, h/ s8 m# C0 F8 F6 ^9 X8 s9 {* 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- m5 G0 i2 }, u' @. L6 c! M
credibility-one
8 ?6 ~2 x' W2 C* G: {6 i;;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people0 a3 p$ H' v3 ^6 T8 W: A9 F
global-proportion+ E0 N; n$ d7 U& _6 u- m* M; K
customer3 ~5 Z$ U) e5 E5 V# v$ c5 N+ S
customer-no( ^- M! x; K% p7 w, s
trust-ok
' {/ P: D( X, c* W2 Ctrade-record-one-len;;trade-record-one的长度
  v: Q5 e: n7 _, D1 I, a]9 c  n) b3 A( a) N+ v7 A
) }  |  c9 [6 s" J8 ]
;;setup procedure
* L' Z2 Y( {. y+ l8 {) c, H  Y4 p( N: i" X
to setup% t( U* j6 e3 T# W. e& L
# V1 l. _0 w* a6 E& c
ca

& J" ^% t; C* \" V2 q' {1 R
4 d5 b" ~2 v/ b: H, V+ F' k- zinitialize-settings
& K5 M  H9 c& M
- {9 M) Q$ S5 ~+ X; p# R1 B
crt people [setup-turtles]

* k9 B$ A8 U1 }: E8 a" z% G5 t5 C/ K( ^: L; X
reset-timer
) ~! V  m, c2 E, f# B! w7 @- d( d7 G
& D9 a9 z8 A1 M0 _) Y; K) ~. T
poll-class
6 h9 d7 z0 M, r" Z; D- d- k
5 O) V2 N" r+ O) _: ^- \
setup-plots

2 w$ H9 O4 w5 Z- v$ A/ _4 M4 _1 n; \; I6 d/ S5 z4 ]  D
do-plots

  V( U! y  ?  Z- V9 y% b8 bend
8 U) D, l7 [4 y! x; z" E) |8 K8 B9 {* e/ n4 F
to initialize-settings
! D% P  j5 b! n8 c) l/ l
! Y9 W/ p  |6 F( z$ q* q' |set global-reputation-list []
2 @: N( y$ b' S" o- d
1 L) J0 V* ?, m, v# b
set credibility-list n-values people [0.5]
, i) n  J4 P. d

9 X9 r* m. i' y5 s! k" {  jset honest-service 0
3 N" `* `) y) }( C% A4 Y

; h" K) ~3 E* Mset unhonest-service 0
( w0 e7 R# ~' T% G) f

% U$ ?9 m: X# ~+ {set oscillation 0
6 E  n2 N4 @7 A

1 j2 x! C/ z$ j0 jset rand-dynamic 0
" e( K1 q: R6 H3 T
end6 o  T5 w9 p7 m: ~

- M- p2 X: h* K1 _/ p! _+ Rto setup-turtles ; E+ y% V/ s& b% Y
set shape "person"
' y" W( f* ?, Hsetxy random-xcor random-ycor$ b; Y/ n7 w9 Q4 J7 r
set trade-record-one []' p6 V* {( O0 u! V

- _# Y5 F! P$ g& z3 d9 kset trade-record-all n-values people [(list (? + 1) 0 0)]
% h: X; C( D; {4 F( i
/ P& \0 A# g* L# u
set trade-record-current []' Q4 C, e! _; O* U
set credibility-receive []
4 X* F' J/ R& k9 [: }set local-reputation 0.5
4 U4 A; X6 R6 p/ X) [set neighbor-total 0+ ?3 w% z0 x1 M9 p$ z4 G0 {- }0 A
set trade-times-total 0
7 D' v3 E, U! g" _( v$ W  bset trade-money-total 08 T' M- ]" R! D4 q) Y
set customer nobody+ k' Z; P9 |- ~2 Q% G# G
set credibility-all n-values people [creat-credibility]
1 W6 r3 U) R8 Q. l8 Eset credibility n-values people [-1]& C" p6 D$ M! U( h1 ?+ I5 P4 h
get-color
. q+ W; l0 v$ D/ h8 H$ H
* y) v! v$ G  M. j# X( b; u. Q
end. r; _+ ^2 T9 y2 x0 X/ M7 m: O
7 q) _! J( ~- Z  i  J
to-report creat-credibility
0 w0 `: V/ `: m  P: U" jreport n-values people [0.5]% j+ k  H' |( v) Y* C) O: h
end
5 v# s4 J2 L) v/ `8 D; ~; W
3 h( A. x" G$ Z* B, s0 V3 nto setup-plots4 ?$ h8 }4 Y# S2 [* r

0 x6 l( C; v$ i. bset xmax 30
" |1 A$ C, k' g  J! P% j; m

0 j; V4 F8 a% aset ymax 1.0

$ P" y& |6 L3 B
% J: H# `' Z, T! r& ?, lclear-all-plots
0 B, R- {8 K) m! Z% ^' R# J
& K: d% W$ q3 H+ I. f
setup-plot1

) D% Z/ K: Y6 D7 j4 I  B8 O3 A- o' L' \) Q8 F, {/ [( F
setup-plot2

1 ]* h% I& ~# C% ]
/ J5 W/ I' A+ L" l* B/ b) i: V* Lsetup-plot3

; `' J- H8 [/ i) g/ o. |$ wend
8 C' r5 V, l6 A; g& {3 U
2 }- ?: a' ?- R, K+ a  a;;run time procedures3 A/ F( X) r  E+ l% B5 O
( p0 p0 F7 f8 a6 w! `5 i3 {
to go
  R" g% v( a- \2 Z# v. h# H7 R: O
ask turtles [do-business]

' E6 v7 r! y) H, S! `' z+ `end0 f, r, P9 {5 o2 g6 ^4 r* B
) j' Q, p2 ?2 O1 e
to do-business
+ y/ `- \8 m! b: _1 N7 x
% m% E) p4 S4 m5 S+ D2 E4 e
) I8 F% h$ Q0 G3 _( j# x3 \9 k
rt random 360

& ?9 ~9 S, ^! D) U- e% \
8 ?* B! `- b$ W5 X- l+ {# e# \fd 1
3 x, ^3 k2 O9 f  V$ X8 \# L) \
& Q% a( F  u3 X* [0 A% n
ifelse(other turtles-here != nobody)[

* f5 d/ M" _# ]8 p! i% R' }, P
" [3 w! X( y) q1 O6 N2 Kset customer one-of other turtles-here

8 f) y; a! g& X- \
! q3 i4 I8 q& c, c;; set [customer] of customer myself
" E; a- X" R1 o# ?: T
2 V, `' w0 m1 m8 C% \  G
set [trade-record-one] of self item (([who] of customer) - 1)
9 I. w0 s4 j! @[trade-record-all]of self
5 E, B* Z; ?% ~: k: r- [; l( o2 G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 t$ A2 D6 R# K9 h: V. z- w) k
$ h. G$ O( A6 ^0 Q* W9 z
set [trade-record-one] of customer item (([who] of self) - 1)0 j" I- ~" P& ^& v
[trade-record-all]of customer
" q$ d4 O  u* Q7 l' Z6 R

- J0 ~) |/ ]) X& ?set [trade-record-one-len] of self length [trade-record-one] of self
- g- b) I6 J( ~! Q
$ W3 @' ?4 a1 Y0 G; M$ w% u2 G
set trade-record-current( list (timer) (random money-upper-limit))
. e" }: s7 z$ Y/ H
3 f2 t2 a' B8 q
ask self [do-trust]
% W9 Y# A, P. P  B& |$ m. C;;
先求ij的信任度
9 _/ a) N  `! u% Z5 p1 l5 o( A2 F; |
) x0 b; b: {% pif ([trust-ok] of self)3 H7 w& i. Z; W! N. [% E, h' N; w
;;
根据ij的信任度来决定是否与j进行交易[) L1 X3 C  X" h* `  C2 Y+ `  q& [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' `" S- C1 K+ C+ x; j, _

) g) h3 H: ^! `9 y/ C[
" ]2 K/ s4 L5 h0 C8 ^
, u$ G6 x+ x1 d& E
do-trade

) K2 W- F$ p1 I1 N; g" d
; [  M1 J, E/ I0 b8 P+ @9 f9 W# s( dupdate-credibility-ijl
" ?( |& Y3 M4 _1 z; N$ K
" k8 o4 ~7 S& @9 }+ j: s2 U
update-credibility-list# Z4 S9 M; i9 l

* V0 v0 q% B& [: X3 w! G$ d, l' c. c# m9 p3 w8 i0 ?" L
update-global-reputation-list
8 s% F/ H# B; f% i- v" c8 m  q# P# O

: N* Y1 U* V; |3 A8 spoll-class

( T) g0 N5 t4 u+ Q
8 h5 v: g) J; r  h- vget-color
" V4 U* x3 `( P7 b* x8 {7 p1 x
1 n/ |7 _% t& n
]]; X" k1 H1 R& w

0 l' o8 q1 U" \5 P;;
如果所得的信任度满足条件,则进行交易2 j8 |; e5 |, f+ y* p5 T) o+ f  E
) @7 m3 ]( M6 B4 J  \
[
3 F( U. V2 w- \  x
2 B9 k9 Z1 b, R) q  x
rt random 360

) f4 Y& k: {$ F/ ^# ^2 {/ c7 w5 V  T0 a" e! y8 j. z
fd 1

9 L, c. V, T$ S  u0 e5 Z0 m) l
/ t+ ^1 R+ h8 d]

+ S, Q3 y. {8 u1 J
* H, _, T8 m" a- ]- \6 z& Qend

9 h- n( K* Y7 Z; ?9 m% S; |  @$ N: W& M
to do-trust
# B1 v. o4 v! f8 t. nset trust-ok False/ a# m! T, M. I  f
! W8 B/ s$ C% @2 V6 D0 F$ o
0 E) d5 G. R6 X% {
let max-trade-times 0+ X$ z, P4 \4 v# r7 G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. C; T; s7 ^: q3 E2 }1 T' J; u7 Plet max-trade-money 0
/ |8 `+ k5 v5 W7 G7 h+ P+ x: c  Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 B$ |; U, v( Y4 M. `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' W4 Q9 R- G: X0 {
1 M0 o$ C& ?* Q' U! @% D7 D3 j

) ^3 f' v1 L; W+ yget-global-proportion
, ^8 Q. g# F8 f% j* E0 Ilet trust-value/ R- S3 B: e1 E, ~* |( G- }4 ^, T
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)
; M3 V* E' m- w% j
if(trust-value > trade-trust-value)  F9 R, ?! c6 v4 y) ^4 ]
[set trust-ok true]$ M' Y5 p) C% b  Z+ l: D
end
: @# x6 z) B; x1 Q
" k; H3 O& g0 H% V* F# Y2 bto get-global-proportion. Y. Y0 m2 T9 l' j, h
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. j) N( {8 f7 `0 S0 ^! P[set global-proportion 0]4 x$ p3 _7 d# g( @. l% E& N( G
[let i 0& \  V8 l% u' y1 h5 D
let sum-money 0
4 Y; K' f/ h7 ^: B$ c8 @while[ i < people]
. T3 ]- o+ G$ e) z6 z[
9 G% }0 [! X. ?0 }if( length (item i# ?% @. p- S+ I2 k% ~# b$ @5 p
[trade-record-all] of customer) > 3 )
4 j4 e; _6 ~! u; x8 \- e- L( L
[3 j. I4 W& _/ J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ x6 n) c3 E' i, v+ Q]
, P! @+ ^7 r* L( b8 t0 M]
: i2 B* }3 @( [/ U* alet j 0
8 S% T6 L% Q" D+ W0 `& @, g; @" alet note 0
* O' x  i( ^4 A7 h2 Ewhile[ j < people]
* Q/ ?# Z1 L$ Q3 C' k[
, {+ ~% H4 ]; E7 M: ]if( length (item i
% {" c; y0 n9 C; r2 }6 i+ b5 D, S[trade-record-all] of customer) > 3 )

$ e! w8 K4 d5 ]) w6 p[' J( p8 E6 B7 X3 h: L0 P
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 e; R; j9 y; c1 J' ?! v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  p9 U) x% O2 g5 n) Q: _7 U
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) h3 r9 x! T9 S( p# P( b+ H, Z
]" w9 G- F1 |, ]+ D* J9 q# X1 d, V
]
4 C8 |" ]* _8 |1 b8 O7 S2 W8 o$ `" N6 uset global-proportion note
4 P; ]7 o# B. A' m7 d" D: _4 H9 M]
6 k! J6 Y0 \4 U* X  Y" E& r0 Zend
) F5 C- e2 R7 e7 w" J  K" t; f: T) {+ w, i% w
to do-trade
& h# M1 `/ ]; Z1 Q# b$ q;;
这个过程实际上是给双方作出评价的过程
8 B1 f8 C/ N* d4 `  x; dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" ^2 o" ]; m' i7 xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! D; V4 B. u- x1 L2 H5 eset trade-record-current lput(timer) trade-record-current; \( Z4 K5 J+ E" R0 |
;;
评价时间$ S! w* G2 ~3 F
ask myself [# R& C9 k( I2 i/ s  l% P; W1 ^
update-local-reputation
& `# i) B3 Z4 Pset trade-record-current lput([local-reputation] of myself) trade-record-current
  k* W/ i' P7 c3 M9 ~  z]* }& O: B9 H: K( S( Y6 D
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  J- _; t) x) o6 |6 d. Q
;;
将此次交易的记录加入到trade-record-one
* D" q7 d2 L9 oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 \. m1 `! c8 H0 S. X3 x
let note (item 2 trade-record-current )$ R* \1 ~% B+ b  n, O* E9 \
set trade-record-current3 P  Q! x& P, f, n3 B1 ~3 S5 I6 s# J9 F
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 Q: _; Q& {; s* @set trade-record-current
7 l9 l8 m/ G/ U. d6 z. `(replace-item 3 trade-record-current note)( t9 `- e6 R) N( d8 H2 P+ m  A

+ i& x- H4 f8 u
6 N% {( n  t+ q9 L5 O
ask customer [
+ Q9 O+ V  W; r" {3 Q8 Rupdate-local-reputation8 u" G1 B! I8 _% @0 P; A; [; v& v+ q
set trade-record-current8 L. w7 `9 z' y" g. T9 L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' B: g( Y2 p3 Q1 j
]
' o0 m+ z. o2 l8 I# j- H, x. G8 H2 U; F- Y! R+ [

# p2 A' S: `" q8 T0 dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) h/ z& @. u" x  ?* x3 _# C9 `
& n5 v3 @! R3 V# \
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% e1 L3 i9 {% H. o
;;
将此次交易的记录加入到customertrade-record-all1 p) P% ~0 w- Q7 l0 ~4 x
end
, a6 c& J$ N9 Y5 G
/ e8 u+ \# n* c# \5 I+ ]to update-local-reputation
9 Q2 }. }) {" J* o; S  j+ B, ^1 l% D, yset [trade-record-one-len] of myself length [trade-record-one] of myself
8 c4 P4 t3 k4 g2 |8 F. l$ m) L6 H: o" s$ @  B

- S  w$ ~: g/ g$ ?% m;;if [trade-record-one-len] of myself > 3

% C' V9 x! t2 N+ c5 Gupdate-neighbor-total' L6 G$ w' o" C1 F
;;
更新邻居节点的数目,在此进行1 r$ O1 s: c2 ]6 w" J! v9 }6 D
let i 3
; ^( N) g% m* `; _% llet sum-time 02 t% T' I: i6 F( u0 F# W
while[i < [trade-record-one-len] of myself]9 c- w* y7 ]% m, Y2 w& ?% k
[5 a3 a$ e6 ~7 i5 L0 U
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 n3 G9 M5 g5 sset i
* I4 ^% q$ g" h2 c5 y9 n% t( i + 1)

/ J- X- B" T' g]+ M" o8 ^) k; r, U. }- @3 @" ?3 z% j
let j 3( Q" k1 F' S7 A% Q# |/ |4 r
let sum-money 0
+ F. |# L3 B9 w# X" P: T* t& G4 ewhile[j < [trade-record-one-len] of myself]
3 ]' U( p( [" E, m) B, o[
7 b# K% B" g' R8 i+ ~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)
! n3 \1 ]5 h8 Aset j- V* [, e. Q. T( R  C& X
( j + 1)

* `0 B1 K7 p4 V8 y]
" c: g/ B7 L4 ulet k 3
7 C/ Z/ F; n; clet power 04 }/ ^+ \$ r/ O
let local 0
2 z- C1 K0 y* Z) X- ywhile [k <[trade-record-one-len] of myself]
6 B3 l6 A" s/ [; p[1 |6 U2 z1 M9 Y; C6 v3 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) 5 N7 N' H/ ~" a4 N) W& w/ _
set k (k + 1)/ A" Y" w) r" c
]
( \" b: U; n0 i2 O9 Bset [local-reputation] of myself (local)( Y) u2 s( x3 M' c. X) l* K
end: @* C8 V9 k1 O* ]0 U) V

7 o" h. N9 X4 |& ato update-neighbor-total
7 m1 z# X/ ]6 W! ]) e
& t  K3 J3 y# c1 D( Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. J# R. E  w7 ^/ W; O

) u* \3 W; A2 f/ J( v

  n& L) R  R9 u- Nend9 q! a; h1 |; h* m9 S& P: \
8 b; }- ^9 `! }' |5 w8 X3 Z
to update-credibility-ijl
% F7 F% _  q5 v4 g! u- w# {" E% q3 d- y% j+ {4 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。, X1 ?0 L* t; m+ ~2 x8 R1 E
let l 0" H$ Z3 E) P$ R* W; g
while[ l < people ]! o, A0 V( k3 b: ]. u5 b! f
;;
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
: i6 H+ o4 A% T3 n8 J# u( _, D7 {[* n3 P1 g  d6 r% s4 A! \( v
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) z- c: s. v5 {7 Qif (trade-record-one-j-l-len > 3)3 R# S7 K) x. ?9 A( m4 a8 p" v
[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
4 ?  j6 E5 ?. c7 [- Alet i 3
$ i/ g' k  s1 `; O; `let sum-time 0
. |$ Z+ C, r9 mwhile[i < trade-record-one-len]
* K2 o$ d& n/ t" a7 N, K+ D[8 l2 J# E# _4 q! _$ z" O: G# b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): t9 x) t) f2 A: l* K2 @7 C
set i6 _4 @, G: [" \+ Q$ y
( i + 1)
% O( j* n+ E, }) B
]: a9 l% T2 U7 l' i1 U- m" ]- K/ ]
let credibility-i-j-l 0
* j$ ]0 D, S- R1 s( B" G" Y;;i
评价(jjl的评价)
- p" Y7 T( d- Alet j 3
9 G' L% D+ e5 M5 k) Xlet k 4
) {, D$ v5 r) n6 q& |1 P; vwhile[j < trade-record-one-len]
! Y& ^! p9 L- A) G[
/ c: q1 }& `$ g1 ?3 h) X: nwhile [((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* G2 j: M3 B0 [3 a" c, S/ p3 R
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)
) z& Z9 h3 n, t/ ~  I) u1 gset j
0 g+ _1 @: S: A$ f. L( j + 1)
8 ^4 T+ o6 j1 k8 ]" ^
]8 e; U7 i5 k0 q* P4 v+ S( Q0 U! J
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 ))
" u: ^: r7 R+ ~  ]1 q, a' n
$ D# z  f* D$ ?, D' R! d% _3 T
8 O. V' c6 `7 ^9 ]
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ r( z+ f' B3 [8 T6 ^5 P- y
;;
及时更新il的评价质量的评价* W: S- W. G: G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 F! G* S+ P9 W8 {: [( A/ i
set l (l + 1)  A2 n9 E) G" ]. ?  N9 J1 z
]
, ~# I- ]# o# |end( g6 ]% _) O+ u; u0 v

1 K& a- n, w8 m- }to update-credibility-list1 K- \0 P( B" m# \/ Q. \2 N* d
let i 04 r) Q6 W4 s$ [5 f' P/ Y
while[i < people]
8 _6 N2 I  @; ^1 \* p( P) H[
* f: K# r% k  ~8 \let j 05 H! V4 r7 O( P5 {
let note 01 {6 B4 |" a) F, R
let k 0$ _2 o8 A5 t* r4 a; `- x; u+ c
;;
计作出过评价的邻居节点的数目
2 g: ~! }7 F: @: Owhile[j < people]
* d3 Q6 D. N/ `- D$ z[/ X" e( ~7 H% k
if (item j( [credibility] of turtle (i + 1)) != -1)
, h! V  d5 v# _0 u% a9 A;;
判断是否给本turtle的评价质量做出过评价的节点: ^4 e1 J+ _. t0 S6 F
[set note (note + item j ([credibility]of turtle (i + 1)))
/ `) Q- |# g5 t+ ~4 t4 \;;*(exp (-(people - 2)))/(people - 2))]
2 [: K* N6 o/ }9 |
set k (k + 1)
9 C! W- b" i0 J7 @1 q! d9 c9 B]7 R8 L% @/ O" w' j9 M" \- j$ U
set j (j + 1)
3 n2 G3 [. e- L+ \" k]
1 H% _6 t2 t- [. Gset note (note *(exp (- (1 / k)))/ k)
/ n1 [0 E; ]1 Jset credibility-list (replace-item i credibility-list note)
8 e" l/ M5 q% ]& [set i (i + 1)
( r  o) w; L6 H; i2 y. Y]8 ]2 p9 ]# C* x% ?* V
end% m' \0 _3 C: L

  {! ^# _, e  D/ cto update-global-reputation-list
7 p- a& {$ z6 @. A. clet j 0) }% y/ O  I3 d6 v: a, C
while[j < people]
" }( S1 d. u; J8 C, x2 ^* ~9 i& Q[* h3 z. e: H+ v: F: u1 [% {5 |
let new 0
7 j% d( ^5 P4 s. u- ];;
暂存新的一个全局声誉4 Z' V8 y0 m; U
let i 0
. Q( K  c# H# Q# I+ B( llet sum-money 02 y+ P' m8 q2 y1 S3 J( K, G
let credibility-money 0
" j4 k3 ^$ B8 D) X# E6 jwhile [i < people]
5 Y4 ?. F- i4 G1 ^; c[
: ^; @' R, z5 N  `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& ]* A: J9 R9 O, Q$ K. s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, A# I  V0 }. z2 k1 @( t' D. Z) ?set i (i + 1)
/ T0 E( H/ y2 n% h: a5 v  \; I& e]
+ ]9 u0 ]- ~( j$ rlet k 0
6 l6 ?: p0 H9 @$ Nlet new1 0
1 f' p# M- G; ~" V0 U1 ?while [k < people]- W) O, R1 t! s! F
[
* p; r! J8 M+ ^2 Hset 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)
. [$ D+ p/ J0 c6 C( y8 ~# D2 t9 sset k (k + 1)8 B! f: d2 R# ]9 `
]( D. V" \2 h7 ?- Z) ]9 w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ u7 T4 V, o' Q- uset global-reputation-list (replace-item j global-reputation-list new)% W" Q" e: Y( t* r$ G' S! B
set j (j + 1)
( m) {! y$ l' a* ]]0 e+ e" d- J# _1 R# w
end& R' ~+ X, F" ]$ J( D9 h0 i

+ A2 _# Y' \$ @) M' h0 Y( N5 p! c& z; D8 d

8 U3 S4 y. y* x. M- F$ ?+ y& `( Cto get-color1 q0 M/ l4 K! J7 @7 a5 r

9 w6 {. Q' g% s4 ?set color blue

- T* O1 N3 X% q( e4 \1 t6 Tend# R" T, q1 l1 X
! r% @3 a% Y$ ~/ F  \. J3 [
to poll-class# t% t" j& `& ?8 m6 e* X
end
: ]& |# T, ?* k- x! `
9 z+ v& u, O9 k3 Cto setup-plot1: z/ _+ s) W8 d. d& F# ~; ~
$ h; I" E0 D6 V/ \0 X7 W- `* y
set-current-plot "Trends-of-Local-reputation"
' c2 j; R4 e' x/ U2 G1 N
# ]# o0 L1 @& K. V, p
set-plot-x-range 0 xmax

1 j9 g! G; }" J/ G1 |7 Z% [
: W  A6 }- I: D& o9 C/ o3 v  `0 Dset-plot-y-range 0.0 ymax

6 }' ^/ M! C  S! qend* N9 e0 A2 Q' a0 v- |  K3 K

" {' Q% [1 _, ?$ h3 l2 S4 wto setup-plot2, |$ K2 Z' G- U* K" {3 F9 A
/ X! w) C, T5 i
set-current-plot "Trends-of-global-reputation"

7 U# s+ q1 q5 }5 N
& d* S) {' ]: xset-plot-x-range 0 xmax

1 S" @( p' F" h- s) d# d' v: g& m' R
! D' |- F3 B: `$ Dset-plot-y-range 0.0 ymax

5 M0 P6 n  K! |end) M" X# W8 A: o& Q: x0 n( [" L% u, P
" h3 \0 n, m2 J  Q
to setup-plot3% j7 }6 P4 F6 p

$ N% [8 I  ?4 r0 Qset-current-plot "Trends-of-credibility"
3 [! _, @5 c' d& z5 m/ u
& r% r$ o; X2 R. ~" b. c
set-plot-x-range 0 xmax
' B6 U" b+ D+ r

( W% ^8 R4 c/ X" _set-plot-y-range 0.0 ymax
' P- y* ]+ U2 s- F! o0 `
end. ?  B! P5 n- Z. C4 T. p
' T0 o/ x5 c2 @9 x% @
to do-plots
/ d# I+ K0 x; N  rset-current-plot "Trends-of-Local-reputation"
* H; U/ n% @# M: z* hset-current-plot-pen "Honest service"% I+ i6 |" j' F; P$ T& }: @
end7 b7 x( f% Q7 Q- U$ x

/ v# K% {/ m( O$ z9 }# A6 p2 ~4 y[ 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.
. s( [/ J: }( V: \7 Z' e  L. w/ l/ D! l0 N6 d4 Y: C- d9 E% {1 \$ w
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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