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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 Q3 t4 X4 G- ^0 ^to do-business
9 _1 T9 ?! }- D% i6 t" h5 O: p$ @ rt random 360
' H3 [, d$ K1 d8 N4 v( n) J* V& b0 p fd 1
, C6 n, K# i9 Y ifelse(other turtles-here != nobody)[
7 s) ~$ Y3 e! f; 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.; a6 r7 Q! l& y0 k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 F& V8 m$ K  `  S( A   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. m) C. b  f7 ~
   set [trade-record-one-len] of self length [trade-record-one] of self9 |( ^  K) |& r1 f+ V( y; B
   set trade-record-current( list (timer) (random money-upper-limit))
9 c& f+ K+ g, X! C2 o, a  t
7 i* r* m! B) B, _0 V# u6 e0 P问题的提示如下:
; w) l% G7 u0 j6 c4 a
+ B) I) g9 P5 f- |; T6 b- cerror while turtle 50 running OF in procedure DO-BUSINESS4 z/ F( U3 P! ?* R( w
  called by procedure GO: Y8 r* [9 _/ ^% E# j
OF expected input to be a turtle agentset or turtle but got NOBODY instead." K$ h3 D, R% t! ]' O8 O& }5 l
(halted running of go)" N# k: z/ ]1 i1 h! B3 a

9 q- r. X$ W- j' E7 U% g; y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~~5 C! Z& B! D9 m9 d3 f
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
9 r/ v- g9 D7 B6 {4 B' yglobals[( ?3 t2 b; I+ r3 e2 L$ Z- C
xmax" A4 J# ]3 k- J1 w# O5 ~  F8 o' _4 X- N
ymax/ O* w* ]+ G3 p7 t7 h- G
global-reputation-list
. w1 S) T7 f: F9 K/ [& G' P$ D5 G2 j- _. C
;;
每一个turtle的全局声誉都存在此LIST
/ z3 z+ v& t  B, r5 E' q3 x- zcredibility-list: x( Y. G" o* L+ R& r
;;
每一个turtle的评价可信度5 s- p( h1 }) a- D( ~
honest-service5 [- ~) B: ?" x2 o5 f' p+ N9 v' [
unhonest-service
( ?2 C3 p/ U2 x. L- noscillation
" q8 Q# W2 p8 @3 Zrand-dynamic" {+ W5 p$ f$ E1 m+ f" P5 z, z  T
]* Y6 F3 C& q9 y5 A) }
/ S# c( |  y& r
turtles-own[+ u6 U4 i0 z/ `7 H8 S
trade-record-all
2 ]' g1 E$ a) b;;a list of lists,
trade-record-one组成
0 n  u8 W) O' atrade-record-one5 J/ {) N; T+ B( D+ F3 z( l* P
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: K+ n! Y+ h- K' r/ g
; X7 b9 z  f8 f;;[
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]]
" A* Y2 y9 f, H# ]/ Qtrade-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]
8 T3 t# X  R$ V9 ?2 S9 ccredibility-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
6 N5 h% O1 }+ G3 {! n5 F. Bneighbor-total; y% e( V1 m" i2 s* @* n
;;
记录该turtle的邻居节点的数目
1 E6 |4 S8 [6 {1 i/ Y' D% M" I- J( [trade-time. x, `- S1 o8 A+ d
;;
当前发生交易的turtle的交易时间7 g' h6 c/ Y  W5 A
appraise-give
) B/ n! U; l9 f9 I; Q2 J;;
当前发生交易时给出的评价
" }  F8 P8 z( Z! a6 ]appraise-receive: Z  N- v2 W0 {0 C  z: k' s% H2 W
;;
当前发生交易时收到的评价2 F4 i* \# o! b
appraise-time6 \7 U4 \7 o( t% V1 q; K
;;
当前发生交易时的评价时间3 `4 [; u9 U0 {- v" `8 R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- e' [' B5 [' ~! F4 t1 N
trade-times-total1 b& d2 q0 C7 k) l
;;
与当前turtle的交易总次数
" ]" Q7 S  n1 Mtrade-money-total; e9 d, y# k7 Z, L8 n& ]% j
;;
与当前turtle的交易总金额1 ^+ G2 y0 `/ S& j2 k
local-reputation
8 d; e9 ~0 r! N, X3 ?global-reputation
: G  e/ I& K! i% ~# c  n: q3 S+ @credibility0 U8 O# B, U) o' u: \
;;
评价可信度,每次交易后都需要更新
4 f8 Z2 i! w+ h) ?& k* Ocredibility-all( O: N. s: m! N1 o; l; f6 r, w
;;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
9 p3 H2 w( p: @! U2 x: {; Q. ^: B9 Y6 \* x
;;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- e/ U" M+ S4 ?+ p2 v/ d7 e8 ?
credibility-one
. L3 G8 `3 y- |5 Y0 p+ o* h;;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- r: Z: {* l* ?7 {! d
global-proportion& h" j  `6 `5 k+ S) U6 q! ?
customer5 B* r' D6 {: Y
customer-no% W  p+ Q  {; P- ^" `
trust-ok- u, g+ U. l; H% r; s
trade-record-one-len;;trade-record-one的长度
: |% Y+ A9 H! \. i6 f7 n5 U7 S$ v]0 @% A2 V' f2 `  H, Q: x

" T: y( x0 @- [/ V- Y4 i/ E7 v;;setup procedure
- z1 i+ T0 o, ]5 S* p/ v5 D( C! ?2 \$ e- [: m
to setup3 U" Z  N9 a: ~' k: f: U# H

9 r0 d+ v- I* d# N( V, V9 e- F" dca

9 W4 g4 U, \0 X1 A1 F( s! o/ U$ _7 l9 V4 f7 I" c5 R
initialize-settings

# X5 p2 y/ ?. t8 x$ y6 F. ^
( V1 t' r1 M$ }! ^crt people [setup-turtles]
0 p6 K- n# \& K
' k$ Y4 e4 y! a6 `( Q8 l' X
reset-timer
# l3 V& ?( d8 W2 ~. ^

. Q+ u$ `; a6 q+ z5 R: Qpoll-class

+ C' w9 B4 C! [' F# W0 l4 A- U8 D) [; i1 d: }
setup-plots

% A: V' ?( @1 c) v" p: `  ^- h# [7 Z2 x$ c4 o
do-plots
$ d( e( T' H6 o* H; V) {1 I
end3 U6 x) ]0 N3 f# f
- ]4 h  n/ W5 Y4 E; u$ @
to initialize-settings3 d& ~- q/ \, d. h) E& D  [- O! S

7 a, I0 P& `1 A* _. A$ ]set global-reputation-list []
& f8 |6 |" \0 L* |" s; w
0 t9 E2 o- T% W( X
set credibility-list n-values people [0.5]

3 N; l/ s  J# @' X9 r" n2 y3 q' b" F  Y, k+ ~; e) d
set honest-service 0

# m* H( w6 B0 l" o( [: m& R* X/ q" N, w
set unhonest-service 0
7 u2 P* a0 w/ j' Z% S. T$ \
0 W( w& L: N# \* n0 t$ \
set oscillation 0
9 R) S: z$ t( ?8 ~! Q9 y
5 l5 W& }) L" |; }, X
set rand-dynamic 0

4 u1 h* M& b- Y, x# K& nend9 b. I! k" K/ Z( y! X9 R1 r
& \4 e: k1 b) U0 Y* v$ D+ q* g
to setup-turtles
2 B7 h3 [6 m# yset shape "person"
& C$ O; g. Y& G, gsetxy random-xcor random-ycor
( q) T* v9 i/ t( n5 qset trade-record-one []
; E4 D" }4 ~9 U$ Z( _1 J

& i: {. i5 N$ a: {- }set trade-record-all n-values people [(list (? + 1) 0 0)] ! O6 a. r- w9 C$ \: Y
' ^  a# s, @  v$ m, N; U
set trade-record-current []$ B8 a  C; c( f
set credibility-receive []
" q" Z7 o6 @, U& @set local-reputation 0.5
: ^) I4 y/ z/ `* R" j4 V! {  Aset neighbor-total 0- ~1 B" i- G5 L, c3 _
set trade-times-total 04 a4 t. V- z4 g8 a' L! Z
set trade-money-total 0
  d( n" e. Q, W% R9 D: @set customer nobody) i8 g' i  p" Y9 E$ y
set credibility-all n-values people [creat-credibility]
6 I6 R) w4 c, S6 _set credibility n-values people [-1]5 C8 z7 d4 I2 K# X: I- ]# m
get-color. n0 Y" P# D( \2 q9 C! S9 O

, l( k6 J7 k# N5 Z9 W* `' ?% g$ gend0 `  l! _7 Y& ~. t2 ]5 ~+ u+ {

; S$ t# F2 X  o% i5 x( X; c7 g3 `to-report creat-credibility  P9 v  a. v. B* _& \! \* |4 Y
report n-values people [0.5]
" U6 x9 S. J1 L  c4 c' j2 L  Eend
, z7 d: i; ~. @3 Q8 h/ l- V
& N7 s" q$ L# @5 w& z! ]to setup-plots, v$ d5 G3 W! q, ~: U5 ~9 t% x
$ c1 r5 s( x. c6 C* {
set xmax 30
( L* I: y( S  \$ B9 ^: U% a

% I% d6 j" |0 ]4 ]set ymax 1.0
& e2 V0 @0 `# X- w4 h. h& ~
1 [: r9 V8 a" c  m& i7 E
clear-all-plots

- e7 h$ N4 K8 l  v4 `9 X" f( n
+ q' R6 K' n& ]! x5 u  Nsetup-plot1

1 o0 |$ P$ g1 w9 _+ Z0 O0 U. Z( F( @- ]
setup-plot2
8 ?) f7 b" J# q- U- q# q

9 ^9 R. x6 k) P  Nsetup-plot3

/ R7 r' A3 a( [1 m, i! a% F4 q( C: [. X4 kend  z: c6 R- z3 G! Q7 X
+ i4 b8 M# }' u5 A- w
;;run time procedures- K& H; Z7 T0 a& K7 n

0 |1 A' A/ c5 [3 z5 F. H, T$ `to go& G4 u0 F/ J9 _7 `8 V
: E: O+ {" Z* }6 u0 x
ask turtles [do-business]
  g; ]1 z2 E( O* R
end9 c0 m# E0 E) R! X9 b" i2 Y

& w4 M+ j% j6 Q& ^2 b8 U- w8 ?# ]to do-business
5 _) f+ w0 k: w# M$ k3 L% K5 ?6 V7 U

  v; R4 ~6 \4 v. T4 o2 y, t* F& u0 Z3 a6 E( k, x
rt random 360
: J' J: A/ S2 L7 g2 l
, _1 g5 G# o3 ]5 T
fd 1
8 C1 {9 \( i' q* F3 O

1 y( \) J# W9 N0 Kifelse(other turtles-here != nobody)[
2 }! g% e6 M, h+ _# k6 t
6 o4 {6 ]: L7 ?' H; p& H% N
set customer one-of other turtles-here

4 W3 J# |% S/ i2 W) }
& P' u0 E0 g- A( x( x0 R2 C, Y;; set [customer] of customer myself
6 n- w6 R8 Z8 h) E/ M) m: i
! N6 n2 e5 m# X; W' J, K
set [trade-record-one] of self item (([who] of customer) - 1)
' z( Z9 S, K3 q( T" U) ^( T! s[trade-record-all]of self
) p0 v6 ?* x* O0 x4 Z# p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ A* K' D; d0 j, r' G" g. J  D# }7 H

- [6 [& L) x# I  f8 }set [trade-record-one] of customer item (([who] of self) - 1)
: d4 v+ [, s' w, m+ o6 W2 J* s. m[trade-record-all]of customer
( ?6 I9 a2 Y6 F" R0 v0 L0 q

: Z. i8 i( n% L* S6 Q9 u% V* Z& O) mset [trade-record-one-len] of self length [trade-record-one] of self

. G; o5 w, f/ `. I9 E* I2 v3 w1 \3 U- J0 |' r! G, X. H
set trade-record-current( list (timer) (random money-upper-limit))

# v6 y3 k9 g# j3 s( h% G
% L& n- Y, c- s& Eask self [do-trust]8 u/ I4 Q8 Q; |3 A% |" M, f9 w
;;
先求ij的信任度
( q# I* z3 E0 D4 {
9 j2 E+ B; r/ L8 Q$ E( eif ([trust-ok] of self)
% k- _5 ]/ i  S" Q;;
根据ij的信任度来决定是否与j进行交易[1 Q! k' T) i0 L5 b
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: j0 c& ~! y' G8 r9 o% v  U1 j% Z5 B( x3 M: c
[

: J+ q, R$ Q5 m) N7 Q7 H) m: B* b
$ {. O5 I9 b3 H' v4 S+ xdo-trade
8 }" L2 K; l# B% }7 s- ~7 X

, @! z! |8 J" V3 C* Z2 |3 J8 v8 Rupdate-credibility-ijl
& @4 v& W% g- n% M, [

( B' W, y- l! [4 q" [update-credibility-list
+ l- ]2 e+ X1 D$ T2 B7 D2 m

" A, r0 E4 y$ J/ M7 V" ?0 N& e4 j
; S% B/ L' C+ g0 X* wupdate-global-reputation-list
/ {4 J. \: o3 }) K5 w- y9 A

/ @1 o. U. B- r* S# t0 ]" @poll-class

+ P. X5 z& c" M8 {; S8 r( c! a  ?
9 s  o& |3 e/ ^- Uget-color
5 r5 ~: {# t3 A- k. `
7 j: G" R6 P( C* E) L4 @$ s, k
]]3 a1 l1 A) t- u7 u/ n3 ^

3 |$ i1 B# t1 I, Y;;
如果所得的信任度满足条件,则进行交易1 ^) [6 ]; E0 H# A$ K
; {% r2 y' [: o0 N) k3 s$ F7 Z6 G
[
/ ~  Q" K" e) \; _2 U7 q

& L& ], _' a" frt random 360
" n+ q: v% m! p0 g
; v5 z: a/ N5 O6 `% L) A3 C
fd 1

% h. V6 _; X# B) O
9 P! r) {6 b. r' E1 j5 m. h4 y]

/ G  `( o0 j( V+ }+ V$ c% _- q. `) v
end
! D# P) r: s/ u# {' \- {! }) d

6 Y4 S2 E) |- e) J) s6 @to do-trust : Z9 t' _' G& W7 K$ I9 o
set trust-ok False
& h: A- x) O% @* D% B
, |1 ?  R" K5 M- Z: e+ z* t

# i2 G3 U1 D+ N8 s0 R0 alet max-trade-times 0
0 m+ Z: g, T& n; H/ x# vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 C% j9 k, S1 ^. U6 U$ Flet max-trade-money 0
, D0 p3 N1 P9 j: J4 a, Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 m- v+ \- Q, R/ h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  @) J+ z4 {+ m: h

6 U% x8 Y3 S3 d3 L) R

9 `  s1 S2 ]8 _7 d& Wget-global-proportion* G# E. I2 a9 m! W' {3 t; k- V' Q4 H
let trust-value# h2 `4 F, b& E
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)

* Y6 q/ e2 e: j: n! ~' ]* Pif(trust-value > trade-trust-value)
/ b' n/ Q+ ]# y/ z1 U[set trust-ok true]
0 S# \0 S3 c- nend
2 z, ?5 S& I0 h# u: s) {: B% M) h& [2 \
to get-global-proportion
, }" [9 x% z, I4 R4 ~- t) sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ q0 ]$ [8 R2 Q# `& v- y[set global-proportion 0]% I8 \$ U: m( [# ?
[let i 0
9 S- [$ I% q. ^# Y$ m8 Wlet sum-money 0
# M6 a/ y4 q# lwhile[ i < people]  ]' K9 Z* c# w" s' a
[* p' Q. q  i' I' |
if( length (item i- ~. o8 h- i( k; n$ m! g$ s
[trade-record-all] of customer) > 3 )

) B6 G8 g$ u: y9 Y- Q[# s0 k8 I! d* N. f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 {, W9 P3 g& t9 S0 s4 {]
$ o/ l! T! W6 h1 f4 i$ ~2 u6 O/ O]
% a7 g) m# `3 m! W# |$ }% ?' qlet j 0
9 `# W$ f6 Y: {# b& _; `0 vlet note 0
4 g: V& o* k( M; w- y1 twhile[ j < people]
% `/ J$ L. `+ }3 B: W[4 V6 {( g0 L% g+ A% E: k. y
if( length (item i
, ]. ^, k. }- O" `/ L+ {1 k& s[trade-record-all] of customer) > 3 )
: k, g9 p3 l9 i  _  \( U) u
[
$ ?* H. l  P3 V" Y; h( V% E& i% hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. i. Y/ P9 m4 Q9 b2 L[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* K" w4 C" G0 t[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ X) `1 ~- k1 E4 C3 q+ ]
]
& R1 E9 T- q3 u. X# ~7 [$ @% W]
# j3 s; I' o8 x( t8 N7 j+ Nset global-proportion note
; w9 \; X9 k$ \7 x9 F+ V, D]
2 a, J) {/ P' t% send3 ?! c% Q# I+ p; I4 V/ w
2 i1 }3 E5 B8 P; e6 b( W
to do-trade+ s* ?2 a  W& A) A* r+ [
;;
这个过程实际上是给双方作出评价的过程
" d+ V8 |" t( y6 r' R, o1 ^# p$ Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 r' v1 v; q; u8 ?. `' P! y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% h( [) L/ j0 Y1 Iset trade-record-current lput(timer) trade-record-current
1 ^$ d1 H6 ~* F: [' G7 [/ s" Z;;
评价时间
. E7 A7 z+ R$ l$ I' l9 i2 iask myself [2 G  u/ k: F: z  r7 H0 _. A
update-local-reputation
/ P& d) a) Z7 U% e. Oset trade-record-current lput([local-reputation] of myself) trade-record-current
* J: y/ M& b" |/ M2 ~( |# S9 s]
, w) s. @1 q# pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! g9 u4 [' |, N* I5 E9 Z
;;
将此次交易的记录加入到trade-record-one( N0 Q7 {( {2 b5 |( `7 w# n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# B& ^5 |  T3 M/ C3 ?
let note (item 2 trade-record-current )
0 c0 v7 @% f( a! l+ Kset trade-record-current: B- x( d2 d6 _! b% \
(replace-item 2 trade-record-current (item 3 trade-record-current))

! T  {9 E" a& H6 i/ o, Sset trade-record-current$ k7 F- K( g" G4 W- E7 t6 j
(replace-item 3 trade-record-current note)4 t; k6 g) B9 T: {; Q5 g" Q
1 R4 R4 E# a3 o
  [* k" [# j% a1 w; D2 q
ask customer [
# g  E1 {7 z" O! Z, kupdate-local-reputation
  o- g" d3 e5 i+ zset trade-record-current
; ]9 {0 p5 F- c! G2 q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' }  I. d1 z; c, k: k9 e]
8 a/ T' ^- W5 @$ Y: o* n! f. h0 Y( r/ o9 k
$ e* J0 K  x: a: e$ }; `$ K3 g
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! A. v1 j+ ?, u0 g; t% N/ j
* s, B5 F, K6 r8 P% x' ]* _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 N: @$ M  }* ~* m9 |, {
;;
将此次交易的记录加入到customertrade-record-all) J  v0 r! B# I* I
end
2 l9 q- j6 a% P( m+ c: b! f
: z( i5 S2 L0 ?2 _4 j  Q/ Qto update-local-reputation8 T1 B* ^! |: Y* w4 T2 O
set [trade-record-one-len] of myself length [trade-record-one] of myself( U4 {7 \4 D6 u* J% @. A) x

7 U: P& f: p" l" d& |
3 d0 g# f  E3 R2 ?) Q0 K7 B;;if [trade-record-one-len] of myself > 3

$ z: n$ C$ Q# v( F. Lupdate-neighbor-total
1 L  c5 |8 U; B5 _;;
更新邻居节点的数目,在此进行6 j) t2 Z) o: ~2 z( K; S
let i 38 U  |$ ~' i5 u  W
let sum-time 0
8 m. ]2 \  U7 @0 O0 jwhile[i < [trade-record-one-len] of myself]
4 }! w/ W$ _8 w" V- a( ]6 B[
9 |% B2 U2 m% U/ Aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! ]: A+ R. N0 G
set i9 `& H3 o  P" ^! T( r( E6 W
( i + 1)
% d4 E. Z5 [, b# H7 K
]5 t0 g* K/ m- R9 ]0 x; Z  u3 f
let j 3
5 z- f- z' q! N) m$ tlet sum-money 0
  X* }$ D/ q$ v, ]1 Owhile[j < [trade-record-one-len] of myself]+ `* i4 I9 ~  H
[6 Z1 ~' G$ n: k  V4 @
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)
+ ~9 p/ }' ~2 @$ ~set j3 K% F4 {, c4 j  }4 S$ E6 J
( j + 1)

, @" h+ }4 T( ~; l5 P. f]4 A, q4 @1 ?5 i6 }6 j% W! a- f2 Z: d
let k 3, A, i* `" b3 W1 O$ k" J2 E
let power 0
- w# v, W' C/ }. P: Vlet local 0  @9 J3 B! B: R' V" V
while [k <[trade-record-one-len] of myself]  W; }: |& W3 @
[
" D1 w0 x% `2 x' e" `" a3 yset 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) ' j. g8 I- J8 g6 P# K# g! R% D
set k (k + 1)
" F3 {4 Q) H2 a: j- S# \3 c]
" o, u( F# ?! B; c4 c$ }set [local-reputation] of myself (local)6 |2 Y$ o7 P/ i( f
end
4 N- f) |7 y( G+ }' {5 v! E9 ?* _! E0 [2 K, o
to update-neighbor-total& T# q8 p: i. g! d% |5 Y  t  K6 G0 \& d
" s' u6 _& M! t: }* x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* S) T! |% k& M: U  |. d0 b8 V
- ~+ _( E7 |$ h0 ]6 n# ~
5 C9 f: o7 ~$ E+ J
end
+ g3 c2 P7 b- d+ L$ u/ \$ y  a& K. R" |2 s
to update-credibility-ijl 4 P0 z- `$ p8 G

" V( Y3 N8 ?  i/ U' t& S% C;;
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。
$ C; x6 ^+ V3 P* M. flet l 07 p( r' l/ G9 d' }0 `( t
while[ l < people ]! g4 t1 ^* U: J6 z+ v7 S* S
;;
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/ g, L9 N  ?  P7 u
[3 p; t2 h- }" n9 `% H3 ^- b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 B# D, P+ v( V" ~* X
if (trade-record-one-j-l-len > 3)
- H9 J1 m& W3 j. [[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- C- v+ X5 w5 |2 {' P8 W/ x
let i 3
9 _& N9 B& f- g) Slet sum-time 00 K+ T+ _4 {) m5 g2 d/ Y7 L1 ?
while[i < trade-record-one-len]: Y* S, s: c/ j+ n) v
[% E9 E- t" O$ e( T1 R. I- \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ `' ~8 m1 w* U0 |) ^/ Q1 d3 ^set i
; U3 d5 F! ]" D+ k0 t( i + 1)
- \1 Z2 V6 ?% L
]6 X2 q1 Q! D- [+ I
let credibility-i-j-l 0
" m- X. l. z% z! j4 F;;i
评价(jjl的评价)
9 g& k5 J$ A7 ~. G9 n/ k% }let j 3
* l; o, }7 J  q) `" jlet k 4$ \$ ?; R" l* a" G/ r
while[j < trade-record-one-len]
5 Y+ h* u8 }) I0 D( A- u[  m: m  j5 k) L$ a3 y$ F+ E% T7 B
while [((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. O7 U& O+ }, f. O* Y5 M% d
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)
" s  a" L3 R7 D& `7 S) D$ u0 `# iset j
$ C3 g/ C1 A) r  s( j + 1)

$ B' l" }% @0 ~. y0 u' L]
1 @) l9 w# h, eset [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 ))
7 \9 s0 i5 z( h" |& |7 t! l1 m9 u: ^' K& i( o1 p' G. T

" P( X2 t9 O% n5 G4 ^/ Xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 I& i  X9 a/ ?* T;;
及时更新il的评价质量的评价
. Z8 Y* |3 [) p1 }* S/ iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 j1 j8 F0 Z9 _5 p; Y& r- Rset l (l + 1)
! ]0 q; [* C( n# ?3 p2 S]# t- T; Y" x1 D/ P9 Z- L5 j
end
0 K1 V8 R' J" A% V" \8 i& I( W1 g
to update-credibility-list# j- V& W3 s* H) @
let i 00 }7 x2 X  Z; C  t) d: U- o# h) n4 B
while[i < people]
0 _$ h6 t' H$ q2 k. M  ][% {1 H4 N! l5 f, k4 j/ q
let j 03 Q: ]2 [$ s1 C# H, F- [& e
let note 0
0 I2 F: u# P7 `let k 0
$ y) Y* Z; s* |: j! D6 y;;
计作出过评价的邻居节点的数目! t! \( q% v/ a
while[j < people]7 {  J9 R! n, r& A9 r- f% D
[
) Q; P( L& z0 I6 m( iif (item j( [credibility] of turtle (i + 1)) != -1)
: Q: f+ M' L  L" t, N3 x& c( h;;
判断是否给本turtle的评价质量做出过评价的节点
/ V/ B6 S2 d. \: X# O[set note (note + item j ([credibility]of turtle (i + 1))). |" ^  G  S7 D! q# z
;;*(exp (-(people - 2)))/(people - 2))]
5 r9 \, D! J' A2 z/ A7 u8 @/ k
set k (k + 1)) f8 J7 [  i+ L: D3 W7 j
]
7 j8 q% m  w4 }: ]8 Q5 m' wset j (j + 1)% u6 F. n7 `1 f
]
( q' Y+ w+ {) E' Q& P$ Lset note (note *(exp (- (1 / k)))/ k)
1 t6 {0 B! C9 r( a1 sset credibility-list (replace-item i credibility-list note)9 P/ X6 L; _8 |: W
set i (i + 1). F* b8 q9 {  g& n" S5 k# c- D
]; S0 z; H2 \0 M, A$ u: a9 y- _
end
5 q& @! ^+ f( \7 D( B% R5 r/ N: A! H4 d
to update-global-reputation-list* R. q- P" x1 j3 k) E
let j 0
: T# }3 F- ~9 S* _5 g+ lwhile[j < people]
$ l/ b5 [  M8 g8 O[
6 ]) c  \" T7 H3 {; X( Klet new 0/ P) a5 O; F( R7 w% r! e1 J
;;
暂存新的一个全局声誉4 J! ]6 g% U2 d$ N) k- a
let i 0
/ N' t3 C. L. p3 J6 `let sum-money 0; @. \& j4 i* r4 h
let credibility-money 0/ }6 ^* J' v% ~' {$ g4 J
while [i < people]
; b  H: p. [% s! R, e0 G  O; ^[
, I- f' e: O- `1 e- s& Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- [$ l# W, f: t% C9 eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" I& d3 U5 i( j
set i (i + 1)! A; J3 L7 @) Y4 R+ I
]3 L# B- H, L) k4 a  f
let k 09 q7 c+ ~$ S% A3 L$ d! K% k
let new1 0+ j$ _( R- {/ q- D  Z" S: R
while [k < people]
! X+ Q: {4 S4 m- b9 g- L[
) R& p( C. N% W1 H  x) V7 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)$ h+ q0 P8 q+ Y; O
set k (k + 1)
7 S7 V' M0 M% e0 i7 k  e  ]- `]
9 s4 x/ t# ~+ s& T) ~/ S, p2 c+ Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 l* ?3 ]8 f) ^9 {- }0 eset global-reputation-list (replace-item j global-reputation-list new)
( r: l" A( o. eset j (j + 1)
) R6 c" Q' N: n7 h" C- k]4 A/ P$ y7 i/ c4 J: ?
end
. l7 @5 g% B) d2 Q  `% X" i6 c7 ^
0 X* X7 Z  {$ F1 F7 P4 ~
8 w) e# c: v7 \+ O% V6 L/ U; b+ s0 F+ e
to get-color
1 [% D) \" b5 j9 |$ W* Z% ?6 z
8 B: y1 S+ L, |9 `% K* p* m. ~% Uset color blue

' u/ `8 l6 f+ A2 h- \4 K+ R! nend
( C8 e( s+ c+ W3 j3 L, B( K0 m
6 a  g; q, q3 L3 m' A# b  vto poll-class
: u* e- x7 {5 G+ F" v/ J  ~end
& n' j3 j: U& _& o8 T5 k
: _+ j, b* x- M7 ^; Fto setup-plot15 j5 D# b$ ~! ?5 w1 V
; n, z5 G5 E+ v* q+ N0 r9 _
set-current-plot "Trends-of-Local-reputation"

# L& a6 R3 d# e$ n" C
; b! ?3 }+ y( R5 p3 pset-plot-x-range 0 xmax
- y' a0 |% |6 v1 [! Q1 |5 }

( f; h7 C6 {2 X8 Z, v" K8 t; b7 Oset-plot-y-range 0.0 ymax

$ E5 z9 q$ m& M; H& o) Cend
( X% Q* @% X  W
, w3 \# B- a1 g4 Ato setup-plot2& `' w# G) I) _- f5 K# d

1 X0 E# G' V' m' Uset-current-plot "Trends-of-global-reputation"
) C+ A, t8 |+ q* M# G4 d7 F

& ]; l& q9 I* J+ Q% O& yset-plot-x-range 0 xmax
+ H% `+ ?+ S5 [& _/ ?2 y
4 l* H. n$ ~  I, m: m6 q5 Z( W
set-plot-y-range 0.0 ymax
1 F! l( E% Q6 Z6 I! c, C* s! r' E
end- D9 U/ j& g9 ~) j. k, V7 z4 j0 _. W

6 m  n  C& A" L$ y7 S4 E/ H/ ~& h- Wto setup-plot33 X! K' P. f/ f5 C, h9 x! }% I3 T5 Y2 h
% t1 k8 V* V$ u0 E' ?/ |
set-current-plot "Trends-of-credibility"

4 h$ E* Z/ X+ D0 q  ?4 ^# c+ S" T0 K: Y; y! L  f7 Y$ b+ x
set-plot-x-range 0 xmax

! _8 t6 x# s# E7 t
3 Z+ L8 w7 f' y1 x0 R0 v- O' dset-plot-y-range 0.0 ymax

: N9 _) b2 u$ w2 ]  _' ]( `( Q" tend1 {" `5 j; Q+ e5 @' V6 v- U

. c* F4 w, Z  R# b4 Dto do-plots
$ }( O4 s  q7 _: X: sset-current-plot "Trends-of-Local-reputation"9 J/ j1 g7 m( n$ x4 y9 W: Q& X0 ^1 s# z
set-current-plot-pen "Honest service"
/ G( j: V7 j7 Z+ s( Kend2 }' O  }. J# L  U( l

2 P* B# Y# N: Q; ~" X* S- P[ 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.
: L, ]9 X. m3 c4 p# c8 i
3 ?  b# D4 \# G0 @% ~4 P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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