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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 V. o) |2 Q: q4 Q. q* W
to do-business
. X# C) ^( m7 G5 q6 [ rt random 360
2 c* M, H/ L; u" Z% n; p fd 1; a6 N" i1 v3 n: I. c6 P
ifelse(other turtles-here != nobody)[- a9 _$ E& [* f8 |6 `+ f$ }
   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.
! r& H' H9 p9 S% a" M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& s# ]  k& u" z  y) q  U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  c+ I# Z$ G: x
   set [trade-record-one-len] of self length [trade-record-one] of self* W5 s5 j& Q9 y4 z) h: w# x5 I
   set trade-record-current( list (timer) (random money-upper-limit)). M) F4 o. b, E7 _6 i- y+ v
, T" Y* L0 R. Q
问题的提示如下:* q3 j" j) a# f2 I( ^

8 S0 i7 N6 R8 w7 p/ J1 V& p* Lerror while turtle 50 running OF in procedure DO-BUSINESS
& t, g1 a; i. W0 v  H# W, x  called by procedure GO' z2 ]1 E( @3 @2 p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.% P, d2 n7 C+ q6 d5 \
(halted running of go)) B. v( D+ q0 ]
- r/ i5 S& f; l/ R' `5 S5 c% ~! ]
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~~
7 a& G+ ~; ~' q/ 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' W  H, `$ r- B$ `
globals[# p* K) m4 r. N) l
xmax/ ^- w! {, r3 P: T5 Y
ymax
; {8 w2 H$ E: G  T: W/ `global-reputation-list& h* m  R8 k- K9 G4 E( X8 J

, E2 t0 a: R5 I/ B* `9 E;;
每一个turtle的全局声誉都存在此LIST" _5 |; m) H; q6 D/ m9 Y: a
credibility-list: U( L7 C6 b+ J) Q% d* h( Z
;;
每一个turtle的评价可信度8 ]$ j+ A) W/ c8 Y; j
honest-service% b. t6 K$ v% v* o
unhonest-service: v7 F0 d! x0 w* X( _* p3 P
oscillation
  {* D5 R9 `  n" f) T; jrand-dynamic
' W  [! S7 A6 `/ t]: S3 B8 K, e$ i# T- r
, c* `. J: [; y  u; Q, @
turtles-own[
: s# X! ^: h) F! otrade-record-all; Y2 y: `2 D/ D
;;a list of lists,
trade-record-one组成
: Z: H8 H" o% Z8 m. Gtrade-record-one0 l0 e; a2 R9 I, Q6 L9 f, E
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, @: Q  `8 d: w- b, r) ?; M: l) W3 E6 ]% F6 Q6 a% O& s* }
;;[
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]]: W3 M+ j1 c7 T* G( d% e" U
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]
, ~) C2 V. _2 n) U* B* ]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/ K% X1 S3 m+ e! |
neighbor-total
1 `& t- _( C3 T* e; b1 Q;;
记录该turtle的邻居节点的数目+ A0 B* ]0 m/ z- R9 P9 r
trade-time2 g2 s& Y4 d9 r$ w+ @
;;
当前发生交易的turtle的交易时间
  ~7 P( ^5 H* Oappraise-give
) i" w/ F: e0 l! a;;
当前发生交易时给出的评价
. ~% V. \: J7 f  h0 V. B8 y6 xappraise-receive# w. F/ r. G9 Z7 T; X
;;
当前发生交易时收到的评价' f. x. f% P6 [" h( i. v: B
appraise-time/ K1 Y* \$ g/ M& K, s
;;
当前发生交易时的评价时间0 w( E4 x8 Y8 n) p" s4 u1 ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) L4 Q9 {* B, ?0 Z: Y
trade-times-total% B; }/ K3 J1 |; j4 R; j/ _
;;
与当前turtle的交易总次数
$ ?, D, K* J$ g& M+ x& mtrade-money-total! f. t! M9 P% G5 b  v$ u
;;
与当前turtle的交易总金额: O; G9 N/ \# `2 h" ~  {
local-reputation/ y- ^  x/ X' n" A8 ~) u/ d2 D
global-reputation7 l$ Q4 j" v) x% i+ _1 ]1 C" I+ B& S
credibility- n  j  ^& l: m. e; ^: _7 l0 Y! _4 p( V
;;
评价可信度,每次交易后都需要更新
, _3 n! z( \( q7 K8 \/ T: ~credibility-all
0 v4 f5 r& s3 I( g;;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
# S, ~- h: t8 n5 |; l8 N
) x* K8 M% g5 @) J* r7 b  n% P;;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
1 j! @5 U4 v8 v6 ocredibility-one
! K$ U; c, O$ |/ z1 w3 h3 N;;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* }) [4 k8 A3 N- \% }$ H( X1 }. g7 w
global-proportion
/ }$ r- d2 Z3 g  Pcustomer$ j1 Y% p# M: B" L( L* O
customer-no5 r: z2 A4 I. X
trust-ok
0 q+ K$ H9 J( v: Etrade-record-one-len;;trade-record-one的长度/ r# N+ `9 N: t+ n* L* d3 e
]5 v1 w$ r! C% r7 M0 a7 ^

# g1 _7 k3 C' e( E;;setup procedure
6 T8 R& u4 h$ ^+ \% k% T
: E8 K: P/ J) r/ o3 r* Bto setup; M! H4 l1 u$ `8 M! c- Y
% V& e8 }9 j4 z
ca

  M' v! [6 b" T
& _6 D* i" V" _; l% u. ^. K0 Uinitialize-settings

7 n4 R% P& v: x2 W6 t3 Y" V$ w) s& }5 `& I+ a' R! [
crt people [setup-turtles]

& \& |7 C  y. }% j5 p2 \% }) z2 B) @3 _$ L6 A3 P% u$ G( g/ B
reset-timer

; w# B/ n3 {9 L; x9 t+ ~- Q$ {0 T$ m) r+ Z6 e% d' F1 `
poll-class
, @% y$ m4 C) e! V

' B' O/ l$ B) Y. x: Jsetup-plots

; ~$ x( O$ T3 ], ~$ D# @, l% O% }" w, P6 R4 O! i, h# E; W
do-plots

% L* x4 i$ |7 _  X' d) S: `( xend
: g7 G+ s1 i3 T# Y+ M4 L
3 C4 r5 N) W, N. \0 |to initialize-settings  {% V. a6 ?& g$ ^% n
1 S) a! x7 C9 z, p  D
set global-reputation-list []
; V/ `8 m9 A2 p+ ?& ?

1 n  ~+ |  `) R" Y+ B& X; vset credibility-list n-values people [0.5]

5 @  z/ r, N' z: T3 Y  |# Q, _9 i5 l- j7 ]0 q- u
set honest-service 0

5 _" A3 W4 _  b) T9 ^
/ ^+ d* B7 H, Z2 Sset unhonest-service 0
4 u$ l$ S9 K9 t( b/ ~4 p
/ _% w/ z- v2 R4 b/ S
set oscillation 0

8 k  M' ?4 y- C. V
5 `0 z: t! B  Uset rand-dynamic 0

( i# l/ N% |* I$ @end
8 x8 D) d. }' M+ @( O2 T% @9 u6 d3 N( d: K
to setup-turtles ; M: B# B  H* q5 R& g
set shape "person"
, n6 p- A% M* g6 Q: v7 R$ hsetxy random-xcor random-ycor
. a# y7 N/ g) t/ v& r) n+ bset trade-record-one []* `( B2 F# o7 g) @2 o
; J" t2 C3 E, `% z! I
set trade-record-all n-values people [(list (? + 1) 0 0)] + J  i  S; X) Z' Q  {' B( X
9 p3 P: ?3 V- r! Y
set trade-record-current []
& e/ h+ |+ i' j+ l( N& O9 R+ m; lset credibility-receive []4 F7 G1 {; D) f4 |# S+ R, D
set local-reputation 0.5. o& N  q( U2 q4 N# ?% @
set neighbor-total 03 b0 a% G+ M  w4 M& V
set trade-times-total 0
5 o  Y1 Q* Q3 z' _8 ~7 _. wset trade-money-total 0
0 d1 {. f) X& @6 P, Vset customer nobody: N/ [) z) V& G' `# J7 H- f# _
set credibility-all n-values people [creat-credibility]) P$ q6 w5 ^  K# Y7 R: w' m
set credibility n-values people [-1], m' b4 c  z# ~
get-color
4 ]. Z- _1 X5 i8 V: ^" \, x0 D2 F

/ L) }6 ]$ a4 V& E6 O# ?/ h4 l- Oend
; Y3 C0 Y, R( _( ]" x9 d4 E9 X) S/ q( `8 ~# L
to-report creat-credibility
, @2 f: ~, E/ }. F6 W& e+ Areport n-values people [0.5]; P; @1 v0 }+ l) t, R& Y
end
. c0 \2 `' V1 h
2 _; H, f3 K% K: @* \7 Pto setup-plots& d$ f! P/ b3 r' R0 }7 t# v

, B  X  v, n2 w% D; k* I# dset xmax 30

" L  W; b7 b* ^8 V: ~- J; ?, }# W! L; B
set ymax 1.0

7 ~6 I6 J% t+ @3 E0 I8 W0 c: |* @! y. e" b* v4 H/ u$ A
clear-all-plots

$ y, L5 p: _2 {) p! D/ n9 A! }  t# N0 P
setup-plot1
6 u7 s, t; d( }. o% @9 D

, t0 H; _' j2 w1 Csetup-plot2
% q' ]  n& s! z0 a

2 t% X- V. h+ U" Jsetup-plot3

) h: W  k. J' ]% Vend
+ x( E1 V1 _0 o2 p* K6 @, p, p! W
+ @/ x: K  `/ D  n;;run time procedures9 _: k1 X) q4 ]. @# L

; s$ H8 e% e4 ?' [( l1 xto go
  f0 J  w: o  |% C& V: z( ~# x' f% }: Z6 f1 ~' T
ask turtles [do-business]
1 n3 }: J0 b% `# U
end6 C0 t2 q( ^' G3 G% ?, b4 @  e
3 w/ ^$ ^* A6 `. Y) x/ _7 u
to do-business
! ~6 i7 z3 a. n

. N8 d/ j" c& [8 a
1 R( g0 P- ~  _1 q' prt random 360

0 V, k/ }2 v6 m4 j, S) N  x$ R8 N/ ~2 m7 v
fd 1

9 C# [+ G: O8 Y
) I: Y0 L6 a, U% m. B+ Gifelse(other turtles-here != nobody)[

$ F) W6 l* H! @$ I
  Y% _: Z. X$ P" q6 S4 vset customer one-of other turtles-here
! Q, S) P* ~2 N4 v8 b& D

( B# d+ T2 L* ~" [% d& A1 D;; set [customer] of customer myself

1 T& y& s, ?  Q' ]$ n& x# z
" ]. l2 l$ D7 k  eset [trade-record-one] of self item (([who] of customer) - 1)2 q( d# c: Z9 L3 N% Q0 B
[trade-record-all]of self( q0 b" P5 o/ O  _+ l! J+ R: v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 A- S9 I+ q8 C8 h
% n! o8 b' z/ n7 Z/ f
set [trade-record-one] of customer item (([who] of self) - 1)
. j; }0 |2 Q# U! ~[trade-record-all]of customer

8 s. q4 I5 u9 \/ ?$ S3 J, T
, Q! n8 \% z! {& K: ^- L. Vset [trade-record-one-len] of self length [trade-record-one] of self

% r) b- ~  R5 o3 f+ v0 X' S4 z
1 R- p: [# h8 dset trade-record-current( list (timer) (random money-upper-limit))
+ X8 e/ V' g) M
( j; N: X; ^7 L4 M3 ^
ask self [do-trust]) S& X7 @4 U9 M( X
;;
先求ij的信任度
, q1 V0 k1 F& q. X2 ]" L/ b
( ~5 g& F$ _  R) e7 `9 O9 }if ([trust-ok] of self)
" u* ~; c; e$ }! o;;
根据ij的信任度来决定是否与j进行交易[
- S: R- o  h% g1 R8 task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 g0 l+ E. J/ l2 H
- P! q) |) L% m6 E4 r[

) {8 f; W- d3 s0 M+ A8 z. L: P. _- m4 E+ _% L+ ^
do-trade

$ v- |* J4 d: y/ J. ]9 p7 v8 v
8 ~: e( \3 w4 n- d1 Y, Y: Oupdate-credibility-ijl

$ @. M7 o- C  f( p4 `: y  ^) g; L, ?- F& y" O: R$ l
update-credibility-list* j% Y& V& z' N  q0 {, F$ n  }
& T8 G  h7 @( _- }: @3 ]1 z3 x
( q% A4 |- ?3 `0 u% a
update-global-reputation-list

( }& U1 w' Q. Q8 Z( Y& c. K5 Z# T2 r8 ~% g; T# x
poll-class

" E4 P  l! y! q3 Z/ L2 [" u+ q2 h/ }' `: O; W- y
get-color
3 y3 m, `: G' M3 ^1 _

  S. Z8 C0 c+ y1 I]]
8 u/ t7 ?- H: _% B$ z5 c, Q
8 w$ _; q( O3 T' e;;
如果所得的信任度满足条件,则进行交易
8 f# F- R4 \- _% h
! Q  O+ F2 u" ?/ s5 P: ]% c[
3 ]4 t+ X: Q7 z# g

+ \, i9 u8 I8 _1 e; R. p5 ?rt random 360

9 ?8 o9 d0 F' j6 R1 }' f
/ i7 ?1 U* u; lfd 1
( r% D$ v, ]; b5 i! Q% v& m- O

* j+ |( C; S# I( x]
1 t& y  K" F4 l4 w8 A4 p
  g6 c( d; o( Z/ `0 j9 [6 j! ^
end

/ X0 x, S" V- X4 v7 z, j
$ v6 _0 k3 q& u* l9 i4 |; i/ k& lto do-trust ) E$ M+ _" O- l& |8 \: k  j" f
set trust-ok False% d* x* B7 y# O3 M! }7 N" R6 l) j9 Q

0 i/ _9 J  n+ T" Z7 A( [* v7 [7 `

0 M! I9 j" l4 R9 ?8 k6 W. M3 Llet max-trade-times 0
7 {6 A7 f2 p2 ?" L$ u# Uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ o, ^# y+ k. T0 l1 A1 |% a
let max-trade-money 0" I' ?- w4 f5 j5 v7 g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' |5 w$ w+ u; n( v/ `% wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' u. X% n" K. T, `% p
0 d9 d+ ]" F7 B" |3 i  K: K# ~
9 l3 p* l4 I- e5 Q7 y
get-global-proportion) O) F% C& d  x5 ~, }
let trust-value
2 C- ^  |, Z# tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
  p4 G9 L" Y; P
if(trust-value > trade-trust-value)
& s+ k: R: p9 K# k, |2 F" H; t[set trust-ok true]
9 v1 J4 r1 f  g% M, o& uend
! Z- E$ T  @7 B. [% B8 }7 x
1 V# ~2 k7 h( [+ e$ [: R' A2 Cto get-global-proportion3 {  P8 ^% ~5 x" d; `& u. h% \$ g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 ~9 u1 @3 E8 y& t/ _2 w, Y
[set global-proportion 0]% }, L# f$ z% B5 d! k  I
[let i 02 A6 p: L4 o- P; \  o
let sum-money 0
4 \% J0 [# V! Kwhile[ i < people]/ c& S  s0 `9 q& D3 {& ?
[
' W& T: W5 @% R% ^3 i% @& [1 @if( length (item i% ~5 G/ F# S% P' ^8 z  ?
[trade-record-all] of customer) > 3 )
- Y* S1 M$ e8 k( Y3 X; K
[
2 f: k! i# U  m$ zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 q$ d! O& ~3 i1 w% ~7 U
], X; Q" e7 v7 t
]
. W% {/ s# f( z; Mlet j 0! L7 I* H) k9 v5 g  G% S
let note 0
1 V8 m' S5 ]  V' b% K, L; ^while[ j < people]
1 m: s" j* j% f7 h) S  K[
5 Y$ i0 i/ R( d& t/ sif( length (item i
. s* c( y. s( U; [7 b" p& m[trade-record-all] of customer) > 3 )
8 n* \" o/ n. [0 {
[
* D& d; j% d4 w( R2 Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 t. ]3 K, b; z* o8 L+ o' q" M7 a[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 A% T4 q  V1 D- Y, N3 `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ r8 u3 d8 e$ T+ _, e1 A
]
7 Z' `; r+ j4 x]6 e% L1 Z2 g& M. [0 N
set global-proportion note
( \* \) E4 M6 u! _]
6 j% \/ X2 @1 |0 d: f, a, c+ P, wend
4 l  U& y9 _' s( |  R
+ l  i# K0 u  ]1 X. Z. h3 |+ oto do-trade
- p7 u$ O3 {  s( k;;
这个过程实际上是给双方作出评价的过程
0 x) B( |8 R: [0 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ X3 H, [8 N5 T" A: O8 u9 Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 Z$ w3 N5 f6 k9 @, m2 T
set trade-record-current lput(timer) trade-record-current, W; J" p& C6 p8 W. W" O3 @
;;
评价时间
+ t8 _& {1 S' V$ [ask myself [; I# M- G/ Y* C/ B: C* E& l$ ~% n
update-local-reputation
# [$ G1 K2 R. m2 z" Dset trade-record-current lput([local-reputation] of myself) trade-record-current
' r$ l4 w7 [" l( o* e7 ~2 W]
7 M3 B  u( T  a" b# U, j5 H* sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ z1 b. ]9 l' x8 Z8 `1 Q
;;
将此次交易的记录加入到trade-record-one
" H* X/ [. i. A3 W# Xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) D# {( c& g  g1 t0 r( X3 B, X
let note (item 2 trade-record-current )
# w/ s& d* j0 ^7 L' g' _set trade-record-current
8 R2 k5 t0 @5 d' z) _(replace-item 2 trade-record-current (item 3 trade-record-current))

- B5 q% }( a; o3 u0 ]( ~set trade-record-current$ U5 \% r6 X4 _4 [
(replace-item 3 trade-record-current note)* Z& @3 \( v: M' e" n, l+ q$ R

$ p3 e7 M% d  ^4 z

+ |  n; T) f7 y- @+ s& m6 A# g) O4 Hask customer [
+ k- R9 u2 x4 e1 G8 J3 ]. hupdate-local-reputation$ F1 e# x# M* g9 c6 I* W: U
set trade-record-current# O& V& @0 h, O5 P
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! m2 X: F: F2 S( X3 L
]; f4 S; C4 q: x  b8 w; ]1 Y5 g7 K
9 |/ A" u1 J; X( k

  V  Z1 x* E1 s% N" ^6 T$ Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, `& A: ^: \$ z
$ a& I0 u1 F) x- f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). Y, j* v, |) u% v
;;
将此次交易的记录加入到customertrade-record-all9 I+ }, [5 L6 P
end8 s7 I0 `# h& u9 n/ R; e# S

0 l+ u) j6 p- y& }! q$ b& B1 Pto update-local-reputation
: F0 V9 y9 c7 u3 T% ]set [trade-record-one-len] of myself length [trade-record-one] of myself
+ W, j9 f) |6 |* A' K" m7 e2 u' ]( B* D7 R0 U: u

4 ]9 }4 {) U+ a- ~, t; @;;if [trade-record-one-len] of myself > 3

5 E  Y" E) E; k( c  U5 supdate-neighbor-total
' n' G2 K" }  U3 J2 k) l3 O3 \;;
更新邻居节点的数目,在此进行
/ L+ _5 y7 G. W; h0 zlet i 33 C# O7 Y6 |) g0 |3 b4 b  x& K
let sum-time 0
" E/ z+ g) W/ ?7 _$ jwhile[i < [trade-record-one-len] of myself]# u+ b8 J, Y- }; ]2 W
[- T% x! ~% C; q3 g1 M
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  s4 v3 `  t) Q: x  h$ mset i) U. T) Z+ j( m3 p6 I
( i + 1)
0 F: O2 E" b( q0 C0 \
]
  t) b. u3 M- H- plet j 3
8 I; z: c7 F: U+ Plet sum-money 0! x4 D, E6 g/ S( X# {2 T
while[j < [trade-record-one-len] of myself]" Q0 j# H. B5 P0 `, Q
[9 T/ z& ]1 k( k/ ^0 c
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)
5 Z: p) f" p1 O  Qset j0 U$ Z* Z' @% h4 v  n
( j + 1)

$ a  n% \- m3 v- \5 L7 J5 Z]+ K% Z* f3 @- p$ p+ m0 m+ M* C# y3 P
let k 3! m& c( ^- b, [! G3 M
let power 0% K: M& P; v! p! o
let local 0
/ d$ ^0 k. s0 g# p, F+ Vwhile [k <[trade-record-one-len] of myself]
' W+ s$ b1 X% g/ \[& F1 f  W9 a- f& q; ?
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) . F% F" i) n4 W  U( }
set k (k + 1)9 r, ]& O% X" H) B8 X+ G+ T! C
]
! t! e3 F% y9 k7 k* oset [local-reputation] of myself (local)7 f: M/ ^9 C( A# ~* X& b6 Q. r
end, z$ E" n7 i* ^! @- w
, k/ O* `8 t2 V
to update-neighbor-total) E! A& u/ V; U+ y; d/ c7 A. G

) g2 ]. \6 o9 Q+ I+ ~+ h  yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 d: M; B0 ?1 _) `
6 {9 j" O% w8 d0 S
$ ?- E4 |$ K4 R1 r$ v* S0 C; o3 @  X
end9 f3 u& f# y: Z, L$ R4 ?

' V' d# m5 r: N* ?; wto update-credibility-ijl
$ o! \+ J; j9 o6 P9 ]2 e- Z1 o$ h, @0 ^) i$ \
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
: F) W$ v- i  Z3 s! Ylet l 0- k  D; X$ B+ v" X
while[ l < people ]
6 Q/ I+ V+ x( B0 ?6 g;;
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) e" y* J  S* b4 u
[
9 ^+ N0 H. f7 _0 ^let trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 c7 m: V) E! A$ V% G( ]; T# u4 w
if (trade-record-one-j-l-len > 3)
! Z0 D& d' M+ v: G[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-one9 f8 y2 }% ^0 j' I+ `  S; @
let i 3
+ l) W" t' A6 D' f* Y; e4 j% F$ |let sum-time 0
2 K/ r* h5 B- A+ Twhile[i < trade-record-one-len]& o3 @& C- s' P
[; b! v6 I3 `5 t& |
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ w" j$ ]. H" f, Tset i6 R  Q8 g$ V) I( ~
( i + 1)
7 W- _! m0 n8 N( L5 I) j
]
- \7 b7 ~/ c1 v0 \; Klet credibility-i-j-l 0
+ s+ c& g" e# G% x! y2 e;;i
评价(jjl的评价)
' ?1 q" m3 G9 z1 V9 m5 O/ |) M, Zlet j 3
# o9 H5 j& K! A" x( J2 H! k$ rlet k 4
6 j* n/ L4 p5 K' B  Zwhile[j < trade-record-one-len]( d9 n2 d$ @+ }/ i; V, r/ _8 T
[6 u7 ]+ c% B! J& N  r
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/ \' J& V# A: |/ j7 |
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)
7 S1 o: [* x$ q/ i5 Yset j6 i2 s- k3 E$ [3 Q
( j + 1)
4 x( [% M  N# l& K* V4 @$ u6 j
]( E; s' E( l' K1 u8 b& R
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 ))
. `6 E4 @) F) _# S2 K' ^% @: i, y& l- ^/ w" ^* F+ k

* ]8 {) ~# [" R. Ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ ], Y# @( w: `% v. N9 y
;;
及时更新il的评价质量的评价2 e. T& @3 ?& Q2 ^
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* a0 f% S! I+ {, A
set l (l + 1)
) n' @1 T* ~9 {8 S]
' B* ~( c4 u7 k1 m0 rend
6 V7 r5 l# `& t. n: _$ j
& f  a) e# P; {6 J- L/ c% Ito update-credibility-list
0 e( _0 ~. `  ?# dlet i 0' ]3 b5 p0 z: w1 J; v
while[i < people]5 @2 D% V3 z% r% x
[5 U6 ~5 k3 v0 Z+ Z7 P
let j 0
6 _9 b9 m9 ?* elet note 05 y6 A* ^* Q& C
let k 08 o0 A1 a% Z7 c$ h
;;
计作出过评价的邻居节点的数目7 N: I9 A, a6 I0 ~4 L4 s3 P" d
while[j < people]* K9 U" j9 E9 a( V# J
[" m8 H/ [( x$ A% j  Z. {; P4 }
if (item j( [credibility] of turtle (i + 1)) != -1)
4 [9 [! R9 S( A1 t# b6 p- N;;
判断是否给本turtle的评价质量做出过评价的节点
! _+ W! g( V7 l% k; c[set note (note + item j ([credibility]of turtle (i + 1)))
5 r, e0 w/ W* X; V; j5 E;;*(exp (-(people - 2)))/(people - 2))]

( e# D+ J! g* R% s# Gset k (k + 1)7 {+ E% _. F8 c7 C  P/ o1 f5 C; Y
]; @, Y" k+ s0 U; X& M  p, {% b
set j (j + 1)
6 k6 q# z. ~0 E% B: y% T]
& b5 M# H* S+ \/ O. {0 y& _- Pset note (note *(exp (- (1 / k)))/ k)
. t7 r" P! J5 C/ e! N* H/ M+ Wset credibility-list (replace-item i credibility-list note)/ w- D0 c: W0 G0 J6 {0 `
set i (i + 1)- G' I% u7 Z: z6 h
]( h# P% [! G* r% P3 a. r% y) p
end
  s! ]6 L3 ?  E1 j$ t  ?" t$ J4 |. T0 u0 Z4 z" A3 y" `; x. K7 C
to update-global-reputation-list
' f+ L; H% E* r) S, plet j 0
4 p- h( C! h7 J! z3 W+ \while[j < people]
/ G+ w5 t0 c5 @" ~1 R[
# t% E6 `1 P7 _* }let new 0
, L" K4 {' W# y$ @' e- k. w* i;;
暂存新的一个全局声誉/ P' j# G+ R# c# a# P( W
let i 0' @2 `. a0 B$ c! F: j
let sum-money 0* J! c9 a9 S, E  n0 W  E
let credibility-money 0
# U0 Z6 k( Q' ^2 f( t/ Y' owhile [i < people]
8 |' z0 ?0 e$ c1 W. k) L1 c' H# c[
9 z5 ]" b8 r; _0 I: A2 uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: M* |7 i5 _" ]set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 f( G0 ~" K: m# m8 l1 x" E
set i (i + 1)( `  E( e! P* o8 j% }
]
# F) c1 ]  y0 L2 d6 X' L/ Wlet k 0: a, ^0 v4 h8 _( M% h- m
let new1 08 n4 b$ J% k% t) ]
while [k < people]
0 g. H1 _0 {: T/ h[
- ^  _5 b1 A4 f2 X8 d' S8 wset 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)* O2 d1 D. \/ H! ]. ]( b5 b
set k (k + 1)* C7 u1 |6 x% x7 v! L( Q
]
3 c; F7 [' o% T8 fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' x6 `' z% E* e1 ~* Z' tset global-reputation-list (replace-item j global-reputation-list new)
1 N% u8 V- M5 z) s1 bset j (j + 1)5 q# \, o; h" }  O; o
]& f" f7 J1 P, y! V0 `) r$ ~2 c) V
end% X, ^7 o9 N/ B: C- o7 n$ H6 S

) {0 m* _% h' S& P. r0 |- |# T, H
) @) O3 Q' B/ l8 w
to get-color
$ y) \. o' U; W4 y5 x" e& O* t* f$ |7 l9 x) K
set color blue

' ]0 @  t9 t% c$ H2 ~end0 q* }) ^" b  \0 l. l
, |- U& u8 G/ j0 q9 p+ @
to poll-class: x" Y; c" Q/ D3 _
end
. }& m; f- r& y! V; i. o1 g% P8 P5 g8 O4 _' g
to setup-plot1
, s+ @; h% r( j; f3 c( T3 j5 y  \! o6 c) t/ v( B
set-current-plot "Trends-of-Local-reputation"

0 Y9 @/ t8 Q/ D) ]7 e% ^+ l) k) X
set-plot-x-range 0 xmax
) `$ B9 P* L7 R1 |6 v; A
6 i+ D% v) w1 v: q* v9 M
set-plot-y-range 0.0 ymax

" o+ Q$ p+ \/ Pend8 @7 \. O4 u" z8 L4 a$ Q
- u( Q' J$ V' o- S; H
to setup-plot2
8 E& F! _/ r9 d2 K2 P. r1 F# ~/ A9 _0 }3 o5 V
set-current-plot "Trends-of-global-reputation"
. i' A/ l6 i( w2 n# ^  e/ l% d
$ @3 t& G' t! p" C0 \
set-plot-x-range 0 xmax
: m" [2 u  p2 y. j

# [- f' z/ l( {6 N6 p7 [set-plot-y-range 0.0 ymax

- Y! N4 D" j; m8 I  U& T9 ]end
# b, u8 \' L3 y3 Z% v
, R: C' k- `) H7 U& {to setup-plot31 H1 Y- W9 |' ^/ }6 ]0 x) y7 E
6 N! O' `3 c5 {8 p
set-current-plot "Trends-of-credibility"

6 @' [. |& G, ~& g. w# c9 b; p+ a' A! e! ?% E3 I1 S) ]
set-plot-x-range 0 xmax
$ x* }5 ~/ k: J; B; k# J
/ r; k8 G* \# A# s
set-plot-y-range 0.0 ymax
) \7 W# j1 x! X6 P. i" }3 u
end- b( u9 F% T$ E+ c1 G1 q! k9 l
, U* U7 x( d" G7 k2 K  p( t
to do-plots
/ R5 |8 @9 d. p$ P& k1 I8 y4 Fset-current-plot "Trends-of-Local-reputation"
1 ]: s+ l; e  |0 z7 N7 @set-current-plot-pen "Honest service"2 |$ ~7 L, \6 J) c6 m
end
* A' C* ]" G2 }9 ?& Y+ x
1 m, V2 z) T$ E; x- j6 y* v$ ?[ 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.! Z0 N# ^" g' l7 L
0 @# d4 Z& g5 `: g! J/ E
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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