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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:
2 v* ]4 n; L7 x# s) Eto do-business / s( X4 H) e, I$ d
rt random 360" }5 r  Z3 C  n" b4 `/ S5 G
fd 1
0 s) f& H+ Z' E' {, z ifelse(other turtles-here != nobody)[* o6 J+ Y' D1 ]& J
   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.8 w& j! T+ ^: I' W) f0 W4 h
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 F8 W7 n! T* f# ^7 s
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! W; Z& Q) o: a3 K   set [trade-record-one-len] of self length [trade-record-one] of self
! Z( Y4 u6 ?* e) E9 {" x* G4 Y  f   set trade-record-current( list (timer) (random money-upper-limit))
5 O) h9 R0 E! {+ ^% S  X( H8 d7 x9 i7 u( o  s6 {
问题的提示如下:$ B3 h. ?' g# a' D  K. r

/ U) q- r3 f9 U1 U# y. h9 Jerror while turtle 50 running OF in procedure DO-BUSINESS
! J' S" r; d% Q  B  called by procedure GO$ J& Y/ u5 N2 ]& o2 _0 O5 G: M# y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 O% N9 l- N. F' d" G8 H
(halted running of go)3 U  a& V7 C) l) D2 s7 s: L( ]
  U! |. b) y0 m" f, L. b( g
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~~/ _$ A6 h' k# j0 ^0 p
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, i* A4 [1 G: P! l; M
globals[5 {. b: C2 }. |6 I6 [6 d3 Q
xmax* y5 w# @9 E. v5 P5 N2 B
ymax0 ?: J; k& k0 o8 y
global-reputation-list" i, _8 D5 D$ Z* ~7 k

% J. m6 c7 h3 ~! [0 Y& g$ Q;;
每一个turtle的全局声誉都存在此LIST
4 P5 q- |/ e9 [& R( tcredibility-list' _& q/ V. w3 V  w: F6 G( x
;;
每一个turtle的评价可信度0 q% u/ q' s( J  m$ M, V% s
honest-service0 |1 b" L3 f! X
unhonest-service
$ M; h4 z4 F# q2 X) toscillation0 \* ]/ p( b; g  F
rand-dynamic
5 t$ m" ^8 Z# K* M! t]- i- i* ?; D0 Z7 e  a6 C
" ~6 [( n0 W- W0 s- U: G& W/ w
turtles-own[# i0 r* T+ O1 \$ |
trade-record-all4 g$ M' x, d6 Y( F! L! x- w
;;a list of lists,
trade-record-one组成
8 i3 U" N( S/ e9 xtrade-record-one
3 V1 }# N8 |- Y  B& 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* v$ E. `% ~& C% y' @

+ L7 g% f8 V& k* M- c;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
3 Z' u; ]! @& [& q/ {; }trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
' l) C# Y. d) \* b  e+ l3 ~/ ?credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list: i2 {* A# |0 p1 D$ b
neighbor-total/ u( c# {3 y6 a/ X
;;
记录该turtle的邻居节点的数目) c& N  x3 _' l( g" Q" s
trade-time0 Z% m: K% T- v# _4 Y* f* Q' A5 H  m
;;
当前发生交易的turtle的交易时间! p7 q# x; I* x6 o  k' h) @5 Z
appraise-give
7 w1 h& y: `- l% I  \;;
当前发生交易时给出的评价/ \5 h9 S" }* g: T( A, e  g* c
appraise-receive8 B+ Q" u% i2 n
;;
当前发生交易时收到的评价0 J5 `6 t& T6 e# a" q
appraise-time3 [' j; O6 M8 o$ p# k. L
;;
当前发生交易时的评价时间
% v) W+ p# N$ G' Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉2 Q4 p) P0 V# t3 L+ I9 G4 a+ u
trade-times-total
- {; v1 Q8 H$ |( L8 J" @0 M;;
与当前turtle的交易总次数
) d# H5 ?; ]6 j/ l4 k5 Ltrade-money-total
: x0 n- }; d% d, g# c4 }: c8 e;;
与当前turtle的交易总金额
3 r% K- \% a4 R5 k- r) B/ vlocal-reputation
/ e) P( K8 j5 _0 j8 h& Zglobal-reputation
+ F  G3 O9 b$ H$ ?credibility* U  K% K$ h- E# L1 Z6 x3 n
;;
评价可信度,每次交易后都需要更新) g. d9 U* c6 j! J& M8 E4 Y+ w0 H
credibility-all* s$ W1 ?# H( C$ 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
* Y- I6 l5 J+ G1 H7 H0 L+ h& t. w( h
;;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0.58 D* c. e* t$ e7 i1 G# o$ A- n; z9 m
credibility-one1 F1 Z4 {0 ]! Q8 V4 f5 @
;;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% d: ?6 _- x& o
global-proportion. T* F% Z1 K" g' g
customer- V, K7 r& Q( s1 w: W
customer-no
  j# ]+ v9 `( S6 y/ o! C$ U. s! k) \) btrust-ok
/ `! N0 G/ h$ J; |9 btrade-record-one-len;;trade-record-one的长度! N& `5 _; u- ~! Z4 h: W! S4 g
]
5 T5 }9 n% ^% ?6 B2 `7 H2 G0 b/ \# w: P, V; y  r5 i
;;setup procedure
% k9 A" [( K% [( x4 ^5 S. p1 y: N# E* B1 T- ~! {; K
to setup: `0 j0 A' w4 S4 I/ p6 T# Y! T
" g/ }5 u" H/ e5 o9 y0 {, h
ca
& `! a& m& z" [( M/ `. j
! @: c5 I- |4 T7 B& I1 o
initialize-settings
! z9 [, e4 R1 y0 P
$ f; C! ^+ R' o  R2 b
crt people [setup-turtles]
% @7 z/ F% a+ o% N

: ~: F' B! `" }3 L. u. T$ Dreset-timer
0 J1 [. L5 w! A4 D1 k

& ]! i# Z% {1 m6 A. d. E! dpoll-class

7 T  B! q1 G; O
  F( v! e* E" E+ b5 |  msetup-plots

& H" e4 c! n2 D1 r. m3 k# C* v2 U1 p/ R; c  Q
do-plots

& H9 v4 c! ]& @5 e+ j5 cend: R8 W, \0 w# b( i% F

9 `' U0 e* U; n: O0 Ato initialize-settings- m7 Q# Y9 `: Y0 z3 Y6 G
4 c$ ?' d1 c; b5 l
set global-reputation-list []

/ E8 r+ f5 ~3 P& p" Y* Y: M3 B: g
- s3 w0 i6 i/ e* R. b! Kset credibility-list n-values people [0.5]
; q2 r4 w$ T* D3 p& Z$ J4 f

# f8 j( v8 j- q- }/ Aset honest-service 0

+ \8 ~. i' o" f% ]
6 o2 {3 {% X5 S1 i8 Hset unhonest-service 0
; A: c- k' t$ p( k+ T

, g4 f: D! t5 O+ \set oscillation 0

3 s4 y9 o7 S" R1 e" C' {% j) u! F4 q: v8 k6 b  A! T  j5 e; a
set rand-dynamic 0
  |  m, ]7 v& b6 l$ F
end
# B1 F8 |6 c5 m0 W
6 N# t( h) \4 ?to setup-turtles
3 k9 b5 P0 H  ]: \set shape "person"
" H+ R$ e9 R' Xsetxy random-xcor random-ycor
0 F# T9 x% U- Q( i! x  Dset trade-record-one []
: T0 F# m  l0 S  t1 ~. l2 I$ J

4 i0 Y: q8 F! g( b, _+ {set trade-record-all n-values people [(list (? + 1) 0 0)]
2 Y9 P' }& a' A2 q- K
. I$ x2 l5 c+ ~( C
set trade-record-current []' y% s3 @- B6 d$ M6 I  f
set credibility-receive []  U8 y) o/ s, n6 }; F& D# x: G9 ?
set local-reputation 0.53 f5 A) x5 h3 J- b1 a9 i0 ?
set neighbor-total 0
# ^) B/ O8 [# m4 n+ a6 Lset trade-times-total 0- n; V' u- W( Z( ^. H! Z" m
set trade-money-total 0
' a& _: N. o3 Tset customer nobody
/ b6 t  [' {: \6 ~8 @2 s/ I* I. c5 j1 m% fset credibility-all n-values people [creat-credibility]
( A1 _* U. V; x. i0 Vset credibility n-values people [-1]0 j- ]' b( E8 t1 `1 D1 v9 q7 @+ ~. S
get-color
/ f0 x, K5 V  h  J3 V- q  m

7 R9 x$ H& b, C: f8 z$ Q& l$ g; Y& bend( P- W$ K6 q: o1 o3 ~

5 m* @4 b0 u+ _' N/ Dto-report creat-credibility' d& s$ \5 Y! u2 u! H# o3 A
report n-values people [0.5]
# l( \/ C# i0 \9 I- p/ G0 c1 Qend& [" f5 Y- ?, X6 l, n

) ?# j5 R' d& v0 i' I2 [to setup-plots) J2 l7 e; X0 k  c% n1 `& o5 Z7 k

, A3 p7 t2 X# l' {: F; p1 Hset xmax 30

3 k5 M7 Q+ p6 O+ S6 W5 I% s/ [
% h3 T9 l# H! H2 {, Hset ymax 1.0

- ]8 O( a1 t) z( Y8 g% s- y  |! x  r$ t
5 ~6 C# w3 b4 ]" n7 R  G" Bclear-all-plots

2 _) J0 w; y4 @4 N
5 Z& c* i: C9 b4 C3 J1 X: psetup-plot1
6 X9 L+ B$ C- u$ b
1 Q- t: t# {& G+ ^1 y  y! F+ z  G
setup-plot2
; a/ ^& {4 ?- E' S: x
+ U5 B3 z5 g2 E9 K1 m' R
setup-plot3

9 s2 g3 b9 l) S0 N! lend
/ y) r- f5 ^" H  B- P, k8 v2 F3 j5 b$ m$ s8 T
;;run time procedures) \: G* a! t. k. ^2 x

/ F, Y5 l% l! Y1 a  t$ d7 f$ mto go
( q" k' S- @( |2 |  k0 I8 s1 F4 F6 u5 \
ask turtles [do-business]
' d5 g3 a; {4 y) K! L
end" z/ z  [5 V4 f& }. l- K

7 P* \) t7 ?+ N3 g5 V3 @: @to do-business
2 t0 l7 F0 _( Z; \, D
) L) z  @& L  ]+ r: ?2 Z
+ O$ x' e# ?/ v2 G# Q( H0 c
rt random 360

& G& H; E/ `8 I" E8 s, Q  ?( N6 N
fd 1

# ]/ X8 S+ n; {& m
( ^6 ?/ [7 E% ]( v5 aifelse(other turtles-here != nobody)[
5 s3 K! e* \9 {: {8 [& g; W+ F$ L

- _' e1 [! M+ h1 z5 Eset customer one-of other turtles-here
0 C1 f' {5 \# O4 s

. D- n7 N, y1 F, B2 x$ S7 _1 S;; set [customer] of customer myself

+ o: }+ u: K2 F3 r
( Q2 `* b4 ]# O; z) Bset [trade-record-one] of self item (([who] of customer) - 1)
  m4 P* k; a# i: Y[trade-record-all]of self( X$ \2 H1 R' a  r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 }2 F  X% L) H/ c$ ]' V

. ~5 i; t/ C- U9 \5 {set [trade-record-one] of customer item (([who] of self) - 1)
: O: I$ j5 j, r4 T1 j[trade-record-all]of customer

3 I& q( ~5 c/ g+ G: }  ?# t6 P6 o$ s9 U( T
set [trade-record-one-len] of self length [trade-record-one] of self

# `$ \8 _% g& A5 y4 F8 e$ t6 y* k7 u3 Q' y) e
set trade-record-current( list (timer) (random money-upper-limit))
! S- R* O. F6 {4 _: T' f* D
8 S+ D. Y$ y2 H. _
ask self [do-trust]4 N/ P" g7 H4 K( ]9 G" g2 R/ X
;;
先求ij的信任度- g8 N7 M0 H, C  ^! ^' l( p
' t, P. {) S$ \2 ^3 m
if ([trust-ok] of self)$ x' e1 T& w  ~
;;
根据ij的信任度来决定是否与j进行交易[
' `) X# ?+ J% j) S) \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* ]' q1 _# p, ^  b! r7 m. ]) W3 o+ V8 T; v9 c, ^$ }
[
* }& m4 O" f. p! A
+ M. G" |! g" ~  v: C
do-trade

3 `0 R' Z/ @+ W; @; a' f* O( W
+ g1 U, T8 `* o; T9 I& M8 v: @: tupdate-credibility-ijl

: V9 |' a+ y) e5 g8 w/ U
5 o4 M' S. \7 Q% e5 s6 E; K0 uupdate-credibility-list8 |8 P8 t# ?5 T  {# O
  l: I( M4 F6 \, N, @
" J8 T3 }6 H* Y* p8 y. [) M. ~
update-global-reputation-list

& J4 M, \9 Z- |2 p) @- v* G+ f; Z; v- _3 K) v
poll-class
' S+ O8 z) r; [( }; f. J
6 C# y( u  P& U
get-color

3 ~2 u! S# U. J& x8 l: h# C8 W, Q9 I+ k0 p1 d6 g8 W
]]" q  U+ A) Y: f( t) x2 ^
- O: c  V. {8 Z! y
;;
如果所得的信任度满足条件,则进行交易
7 Y( R( A; {& L* [" \1 ?9 t8 A, `. p4 j' X( A8 ?+ `
[
! P$ R0 s$ A/ H- A4 N7 e

& S  o1 F, {; m, u! J9 Trt random 360

: ]2 Z+ Z, Q! c% F( l" d8 k2 h: C, e; Q3 m
fd 1

6 R/ \2 h% z7 @8 m. {" C+ H( Y$ p0 ^4 l% T+ @; I4 F) O; B
]

0 {. n& n1 x" R0 u: v1 Z0 F  A5 V2 u7 R
end

. O5 u# ~! I4 x. ]9 c2 v/ z# r5 }$ A, f. [: x' [3 x
to do-trust
, C$ I  U; P* X/ c2 J" sset trust-ok False- r& P. H/ B6 x: K- y

/ I5 Z% Q4 P# J8 H

: b# X- g, @$ V! f( }let max-trade-times 0/ F/ H8 c  |4 d% Q8 |& H
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 p  D9 b  Q7 M5 v
let max-trade-money 02 N* \  N6 ?6 @' ?% ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 R2 p5 R, `2 g6 A; wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 W) {2 A8 |3 A" I  o5 r& |( L2 |$ q8 F5 }

. F+ V$ M! L3 z" |* Gget-global-proportion! A- Q3 y1 N! }' L) m
let trust-value6 ]; V/ V  E# x+ T/ 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)

! G0 W$ ^& ?$ K$ Sif(trust-value > trade-trust-value)
6 m  D6 a0 g& v" D[set trust-ok true]% B$ A( j" P6 ]! E) _
end' F: n$ {, X' L5 l8 y7 r7 e
* W/ E6 `; [& v2 G( r
to get-global-proportion
  N0 _% Q% O" yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 T# t0 _: O' o% g; j9 J9 ^; p[set global-proportion 0]
3 V# ]% G8 N, [2 m$ G[let i 08 q5 F8 b5 U3 j5 o  I0 V
let sum-money 0
: a# O* C; V! J) B0 D+ \' vwhile[ i < people]& M  y' h9 P4 U9 v; a
[& ^9 o  [9 k+ k+ \7 v3 l
if( length (item i4 J  \; a! I/ E7 a6 S0 x6 D6 }8 ~
[trade-record-all] of customer) > 3 )
; [# t0 k+ W5 ^' {9 _/ b
[
2 S) {' F. V% K8 gset sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 I: B4 F/ B; v( R( z9 l
]/ M% q* T$ Z& u8 x: m. _
]
0 g7 J# r4 o5 l& Y2 `, [3 Glet j 0
8 v( b4 ~: w- y8 ?; k; q3 i. klet note 0
2 V, F$ H& R# c% h$ Bwhile[ j < people]- e8 [9 |: P. @
[
7 G0 w! x/ q: j( e4 V" l9 S# Zif( length (item i
' |1 L: c, Y7 F0 v1 I1 ?  I4 m[trade-record-all] of customer) > 3 )

; c# c# P0 U: _5 c[. ~7 P2 e& P9 w. U/ N. r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% N- R1 f+ L! z& p4 ]$ o2 P5 W4 }; R[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& r# z# |8 G0 S6 ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 }' ^* z( |: w8 m7 |]9 b2 R" ?6 |( C* [( P2 i" C
]
) x, @& q' R) W2 v  y4 H- Pset global-proportion note
1 ~9 b+ ^$ `. k' d! d]) C  L; ]3 s, y" J# f
end
; P! {9 J2 c" `* K' V" L1 Z' k+ w4 i
to do-trade
8 a2 g4 T  @8 f' Z* o, d' y8 H;;
这个过程实际上是给双方作出评价的过程
! y; [' _* B/ Q+ W/ q2 t) Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% B- b  f" p2 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, C8 _+ i' O* i+ J, Rset trade-record-current lput(timer) trade-record-current% b/ B' l. H, R' ?8 H1 w# ~
;;
评价时间
$ Q& m' E6 A+ \; k. ?+ E  Uask myself [
. m) o% a& W' ^- U8 N3 x9 F4 X0 w, cupdate-local-reputation2 M- U" p& k9 L) a/ X
set trade-record-current lput([local-reputation] of myself) trade-record-current7 K# n5 F2 O$ S+ Q5 Z+ @/ w3 r
]
$ U5 j/ E2 f1 I7 Jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ e3 m2 K: r) l
;;
将此次交易的记录加入到trade-record-one5 Z: K% ?; m1 r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( ~7 w; T* Q! z$ n9 d
let note (item 2 trade-record-current )
8 h- m0 J* r3 N: y: P6 t/ gset trade-record-current
( Q/ y& ?, J. {2 S8 f8 b/ T(replace-item 2 trade-record-current (item 3 trade-record-current))
1 _" F1 L' Q* d& w/ a
set trade-record-current5 v; X. x" U+ Q
(replace-item 3 trade-record-current note)
+ \) E# ~/ [7 P) j# p' I
% r/ C7 X4 z% k& A0 [# {

* `4 ]4 Z+ K% Q4 i7 X8 D9 zask customer [
1 X* f8 |. ?$ v9 ?. rupdate-local-reputation
" x5 U6 q: X2 {set trade-record-current
" j- J" N1 a2 d) _# O1 {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 ^) ~3 e5 r0 R
]- C" A# @# R1 `. @+ T. Y

- ]( o/ @- I5 f
% J. ?1 m/ m' N8 D8 s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 ?; R. W$ F" W8 `: M

6 r7 M+ W2 s$ {; k$ }) E2 u1 vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ A+ v0 u. j6 O;;
将此次交易的记录加入到customertrade-record-all4 q  q# S1 g$ T3 I
end
4 n  N( u& N, W
6 \5 B' L7 i9 p, Y: yto update-local-reputation; @9 i8 G4 O' Y0 O
set [trade-record-one-len] of myself length [trade-record-one] of myself$ F) @+ J, y. E- D$ [8 |, b
7 u! ]& @6 {+ T; j0 v; a, ^

3 ]/ R0 i% U* e4 ~' X;;if [trade-record-one-len] of myself > 3
$ B$ P/ m' s% n: V6 Y
update-neighbor-total8 ?* ^8 e) `6 x0 X# b7 _
;;
更新邻居节点的数目,在此进行
0 S* L2 k' J+ Q. |let i 3
, f& B  |$ V9 Q$ K3 B0 J2 G" tlet sum-time 0
. Y4 P# V$ e& @1 h4 I4 fwhile[i < [trade-record-one-len] of myself]6 B0 k6 ~0 G& m2 q
[
5 Y5 ~' S. G0 k3 Q& |set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# B% V7 G( J. l" f. s. u
set i# j3 ?( E5 @: i& Y
( i + 1)

! a0 C, j0 }$ T4 `2 H/ u]7 g/ a* {$ x) W2 i/ {" X" o
let j 3: f4 g- d( T, e2 b2 g8 [5 S
let sum-money 0
1 c3 Z5 i! L: M3 p3 kwhile[j < [trade-record-one-len] of myself]9 ]8 K; E5 b: `0 Z" w
[, ~% P) k; K: r' |, I4 i! e
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)) ^2 G, T/ P1 a1 F9 l1 R
set j
: f0 [, l2 C2 }+ U( j + 1)
, Q# u9 a% X0 W
]
, V  ^- ]- p' C' q; o- ^+ glet k 3
9 h  w1 X' v3 B" ylet power 01 A6 f$ u/ S6 E2 `9 y0 p8 o
let local 0
* X+ v# M% k  U! u; iwhile [k <[trade-record-one-len] of myself]
6 p2 n4 N8 X- g[
9 n. _$ F- h+ q" \9 Pset 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)   U4 i6 l4 s# [& C  K
set k (k + 1)
4 C4 T% m' p, {: k]
  o3 S4 @6 g8 d5 H! I. q0 cset [local-reputation] of myself (local)
& ?, j$ I+ h8 `( Z. ~# `  q, Qend
3 W# K5 _5 h. ?1 u# f
5 i  }5 F' D) ~( a- N5 _; Ito update-neighbor-total
7 V# P1 v; L' g6 `
3 m+ Z. c. p+ M5 @& ?; kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 c1 _, C( S  m. K: e/ u' P
" _  g: Y2 Y$ S. _, |8 G

$ ^% b3 a7 S* H4 pend
* _" ~5 a+ r! Z* D  w' {" ~/ L3 Q3 x& A2 P( ?, A/ S; R; `# q
to update-credibility-ijl
8 ^  ]. }/ O/ {/ R
3 N% n9 p; L' O& J* W' l- K;;
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。7 X6 a  s8 w+ f& l9 a4 f& p
let l 0
; @! {! N8 g; Z" D8 R5 Jwhile[ l < people ]
: T: Y  v. Q9 I+ d- T* r;;
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/ C8 k! M# v' J" |
[
' ~! B. S: `6 A) B  a. I. rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 ]  `) l( [4 L$ L
if (trade-record-one-j-l-len > 3)1 m8 b. i9 a8 c+ r' p4 c
[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  Z  e$ L- O, ]  j
let i 3
# N+ {& u* |- o' W; b, ^let sum-time 0+ Z) ^2 J0 E* l) a1 s3 N
while[i < trade-record-one-len]4 `/ q- @9 Q! Y" G- F& [
[
  Q8 U' h3 K, m6 ]9 A% G4 R, D  G; Hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) b0 [, Y+ j7 @1 ~; ]# F4 O$ d2 p, |set i
; S5 I6 r$ F) M( P/ }- t( i + 1)
3 _  u2 A" }/ Z. i* L: e
], o0 @" }, V5 v" [% s$ `9 M! d
let credibility-i-j-l 0) Y* s. [: c# R5 V$ _' h
;;i
评价(jjl的评价)
, v/ l1 _, {& n* o  \3 [3 flet j 3% j5 X7 d1 T5 M" A! }" e6 }- i- d
let k 46 H+ U5 e8 e; X) g9 z' n0 N
while[j < trade-record-one-len]
$ Y" G1 Y$ r& R  n0 j6 |( |9 A[9 u1 p  s8 f  a1 i! ]
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* \( V( k! C" H3 R3 P
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)
: g$ B# Z6 F1 ]! H( a" Q  Sset j$ ]# ]6 q' F9 a) I/ c
( j + 1)

* \$ F) p! ^: F* c$ j]0 Z0 C! H9 l( X( q' s
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 ))8 X/ J( j6 n% L4 z1 {% O

' k% Y% Q; H' X$ W

5 X) n  U3 B3 Y, y/ [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 ~$ j# e! m% o. P$ q;;
及时更新il的评价质量的评价
! G+ w3 l4 j5 T# ~0 Y  g1 [4 cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( h) y  J& T' X( k, d6 c5 I8 \
set l (l + 1)8 e8 a0 H  h; j( s* y" S
]
2 W/ V! h  r/ M4 T# w8 w- i& {end  d0 d+ p  T2 y8 I

4 }; C) n) h0 Bto update-credibility-list( b5 {1 T4 M/ O
let i 04 a0 w0 E/ D6 n) B% G% K4 x
while[i < people]% N. g( s, r: H9 d
[
, R' Q2 U$ F" v3 F% Llet j 0$ A% L, m' [3 E0 @7 ^! v* r
let note 0! m$ X% b7 w5 A
let k 0
5 O1 \! V" v- M) E* W6 J;;
计作出过评价的邻居节点的数目4 t) U) J) B! ?  Y6 Z
while[j < people]+ _, }# G8 R, u: `8 _) c
[' O: r  t6 G. v5 P; X$ E
if (item j( [credibility] of turtle (i + 1)) != -1)
* [, t" F6 L. |0 I! O: J6 n& f;;
判断是否给本turtle的评价质量做出过评价的节点9 A0 I+ y' _) H3 o2 K# O+ z3 G
[set note (note + item j ([credibility]of turtle (i + 1)))
. n# Z+ e2 B4 J  g" L;;*(exp (-(people - 2)))/(people - 2))]

$ J# B  c0 L1 m7 [* t! C8 p) Pset k (k + 1)6 c9 J8 u$ F5 Y- T0 a
]
" a/ f( R1 B$ l3 H: Iset j (j + 1)1 B' @. p4 P6 A- U4 d* B5 I& ^
]
) R. A7 N) g0 m6 ]3 gset note (note *(exp (- (1 / k)))/ k)* }+ M' }; }0 n8 B
set credibility-list (replace-item i credibility-list note)% }3 `  H8 U5 P
set i (i + 1); I  `+ g& u/ P" W4 L: f  c
]
( O  w% x3 L: P3 Q5 Rend
6 c& I: w, U4 ^' w* l: u$ N" X( _, f9 Q
to update-global-reputation-list
) |" N% t& i) N8 j% ?, [  |2 @' Wlet j 09 X8 L3 V$ G- v; ], |) r, E5 B: ^
while[j < people]
% n5 T( v5 y+ B9 z5 P6 i" ~[5 r' L4 k3 ]0 n- h* v
let new 0
# D/ ]+ F: T9 o;;
暂存新的一个全局声誉
8 T9 Q3 b- q. V9 e3 h, \let i 0& C0 g9 n: J; }/ |/ _
let sum-money 0
9 n. q( R* j9 E9 |let credibility-money 0
& T. Z6 I2 B; e  J5 pwhile [i < people]
, {/ p3 ]. R9 h7 k9 U& [[
+ j: S& ~8 H/ Y1 U% {6 o1 Hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' X2 n% G5 l9 v/ y( n4 jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 @1 J  s' @2 [7 D' A8 A, T
set i (i + 1)
4 m9 D, N' H; [' N2 z% X4 j$ f]
3 Y( {) @1 S8 \7 `let k 0
1 B- c% _# B! ~5 B2 Blet new1 0
( S* h2 }  b& S2 ^2 hwhile [k < people]" H$ s& n. M9 H/ w4 F8 t' b
[/ b, v1 e! q0 K* I% F5 m# V
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)8 S: ^/ T" r' V, e# h& C, B- R
set k (k + 1)8 t( D5 }% [, V" `- C+ Z; ?% P
]
1 d* q! Y2 F; E& S" F3 Z$ Iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + Y+ |# U+ P" N1 r& ~2 f
set global-reputation-list (replace-item j global-reputation-list new)0 v% X  S' O" L$ @" M
set j (j + 1)" A3 L5 Q( j3 c+ l/ q
]
2 o/ f4 {( D! w: {4 o0 S3 n- tend8 l5 [* r" x+ q& ]9 U9 [9 n' v

# X3 ?4 o# h! M7 K6 \8 [! k  A/ w4 C  y* E- u
& h# s+ a# H- a* r
to get-color
/ i7 N! [. Q6 m' x
' l6 ]9 {6 M5 U: W7 m: Q; iset color blue

) D5 ]! e* X9 d; Iend+ [5 W7 G# X3 Z' ^% _6 |: }' f6 E
5 D5 G9 h2 d( o, \
to poll-class, R5 a0 V. a, S: p) t8 J
end  L- F' b7 }- K+ b2 |2 o: _8 v! A
* ~' M3 a, @4 r4 o, M& y  W
to setup-plot1$ j/ o! V. r1 B+ p% j

) u: p2 L- u+ M0 R# yset-current-plot "Trends-of-Local-reputation"

6 }) P+ M0 c9 Z* V9 w3 ]0 ]" Y9 T6 c; T: D6 I% J
set-plot-x-range 0 xmax
" m! A/ Q! N4 _

  [% Y- u5 I& M) ~1 _) N2 v- Nset-plot-y-range 0.0 ymax

! i$ J. e# P+ n  ~end+ I' S- \2 Q. Y9 {9 W' x2 H9 {
& \2 v  H$ O/ `* H: c9 V
to setup-plot2
: h% ^4 C* @7 C# C' H3 w4 V, I8 J5 s  l6 q
set-current-plot "Trends-of-global-reputation"

' l$ b' m3 t$ d: ?! v5 w9 D
9 z' a, J* z  u7 ~! p6 Kset-plot-x-range 0 xmax

6 W' k5 m6 b: D% S8 G: e$ _/ T/ n4 ?0 ~
set-plot-y-range 0.0 ymax
0 h7 @7 n- y1 S: D5 R
end3 I8 E0 O- U3 @. v
: V4 n( s3 l; e3 [
to setup-plot3
, L( P+ I1 ^9 H3 d1 E1 A  {
( M. C: V5 x, ]8 V1 x% tset-current-plot "Trends-of-credibility"

% }) K# ^% t% @% [0 b9 {2 I9 |; D3 N5 v. n1 H2 l" O- s5 Y
set-plot-x-range 0 xmax

" e' U/ W/ |5 ~' e* ^; u. ~- n. p- p" S2 M
set-plot-y-range 0.0 ymax
) b' C5 T0 U3 P+ }1 h0 x
end
- h* `; w0 S( q0 O! p( ^9 |: p) x2 n+ S2 B; L
to do-plots
6 R' w6 L4 o) ]+ A; ], V% d2 _set-current-plot "Trends-of-Local-reputation"4 G3 m- Q' p4 _$ S
set-current-plot-pen "Honest service"0 x8 A# v; ]9 o3 f" x4 v
end
) n' [* n& u5 p4 c
4 h$ Z0 m' s: y" ~1 S[ 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.
  H6 ]% M7 y! Z/ F1 Z
3 b6 z. ^% ], V  \3 M! ]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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