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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 N2 A6 ]+ g; z
to do-business   R% y6 G& C6 z8 {
rt random 360. y7 _  \( h! R( [  s1 S$ t% @9 ^+ m
fd 1
! O# I9 y9 o5 [0 N( f' Z8 p) U ifelse(other turtles-here != nobody)[
% ~1 `; j+ H/ z, M; L   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.
- U) Q7 {# ~9 X9 O6 Z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 ?  h' Z" J0 [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 E' I# j/ E+ C' G0 i   set [trade-record-one-len] of self length [trade-record-one] of self
" k7 t! v! a% c   set trade-record-current( list (timer) (random money-upper-limit))
; E% \0 h+ |# k0 M: b# @
$ F. C& v$ _9 P5 D! s( a问题的提示如下:$ x5 P% j* g) x

) N: C0 n7 L5 Q2 `1 k9 oerror while turtle 50 running OF in procedure DO-BUSINESS( g5 ~2 G, o8 |9 N) h/ [/ |
  called by procedure GO
2 S3 j! I6 S& j2 w5 V! k4 QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 y; e! ?" r( l  h0 J- G
(halted running of go)
( d- g, c, V! C/ a* S6 E# x: ~  c6 t/ v, Q  W
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~~
/ q- V' {0 w+ H. _4 ]/ K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
& P' l' G8 N" ^  f1 U2 Yglobals[
% j  \8 A4 G7 _# w' t4 rxmax
9 v+ Y% V4 f) b2 D" q) `8 T# Yymax4 \0 g  O5 {/ Z# S+ `6 E1 o
global-reputation-list" T3 B! C# p* ?5 }
1 ~2 v2 _( c1 }/ p! g" s! [
;;
每一个turtle的全局声誉都存在此LIST4 ?8 t0 m" ^/ `. Y: J1 O4 p. r
credibility-list+ W: b) [1 ~0 W- Z
;;
每一个turtle的评价可信度) F2 Y* K1 z& f1 c+ X  G3 R
honest-service/ W0 a9 Y2 Q/ \# Z
unhonest-service
6 u" b- p/ j7 s0 w1 X& roscillation
+ b* P3 }0 _9 C$ M2 t2 n9 H- brand-dynamic
; X7 S4 M% m! ]/ g0 I7 {1 b]# G& M: |' b6 V

0 m5 x; C% R/ D5 r/ wturtles-own[+ a; F1 f( M/ |
trade-record-all
; n5 a" s0 ~0 U5 q3 S+ p5 W;;a list of lists,
trade-record-one组成$ A. g2 |3 G1 E# y9 d/ S0 c
trade-record-one1 L# R* ~: @; S+ _( ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; F; U9 c: G% q& N
; ^7 s2 J2 a7 Z% k$ T;;[
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]]  e- a; V/ y2 y" i9 K& j! A
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]
4 D+ T- g7 N# Q1 l" {6 F- Ucredibility-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
) [2 G/ @( X3 |# [! Zneighbor-total) q6 i2 m+ H: ^
;;
记录该turtle的邻居节点的数目
+ I+ c, Q0 x* y0 q. K8 ?, Gtrade-time
5 H, u3 ^, w' q* |;;
当前发生交易的turtle的交易时间5 n/ b" o. S1 {7 k) ~8 d6 E
appraise-give
7 {, j5 j" x# ^! @3 @;;
当前发生交易时给出的评价
/ r+ x6 X3 p& C) fappraise-receive
4 D0 C8 H) r8 n/ ~, ^+ \;;
当前发生交易时收到的评价
% j3 |7 g' k2 |  ]# cappraise-time; F( Z3 y# O% ?
;;
当前发生交易时的评价时间
' |6 y  r$ p' `9 @) i, Klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ a) }- o' |5 d; j- X- U8 T! ztrade-times-total
( T- _+ Y" Q! e! C7 p* k;;
与当前turtle的交易总次数. L( }4 W7 W. |$ K- C' o% F  M5 g+ ~
trade-money-total' B! u/ K! C2 @3 h
;;
与当前turtle的交易总金额
$ V; b1 M3 a; Vlocal-reputation! B2 `1 F; z( D) H0 B! w- i
global-reputation
+ o5 |$ X  V3 B( Z9 E0 }7 b6 ccredibility
# p' {0 ]  d  E0 X% a; ^;;
评价可信度,每次交易后都需要更新
- E# y5 s* J% p$ }; b- s& ecredibility-all* Y* m7 D5 g3 S% E& P
;;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% N0 ?6 z2 f. Z( n  z9 U, g. j
! K8 |' j  c2 x& i0 K; r
;;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- Q, o% _1 F" h3 {
credibility-one
) n2 q1 E- P2 c  A;;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people3 ~- r+ j/ r4 ]- y+ w
global-proportion
; P7 @; N  U1 i6 p0 x5 `customer
/ O) ^. ~- C# ^% v( w" q5 Acustomer-no
0 c9 E! }" a& e3 Ftrust-ok1 n1 F  v7 L& R, @$ [9 B
trade-record-one-len;;trade-record-one的长度, _/ Y- |% j6 q4 y- I
]8 p$ g1 |8 {: v. ^+ n3 V8 J

+ M) I, h# [7 m9 E;;setup procedure
" e; N  U: o3 g( v0 o" ?1 ]# C
/ [! k, ~  {% }/ T9 v8 `* ~1 `- ~to setup1 f- Z' L1 P; _5 b/ @! o* q
; ?  D# e5 l: e4 |* {. d
ca
& b3 O0 v, p8 Z3 _

/ b6 J  S, P# r8 a- l8 r2 f1 h" hinitialize-settings

# Q: @! @) Q- U; D$ _( d8 g# s- H' P) b% }9 J
crt people [setup-turtles]

) |- J0 \1 u! b" Q( [6 [. |2 J" P: c) f1 ?8 D9 O( A2 H3 L" H
reset-timer
) y+ a6 `8 _- ]6 [% f
. Y, \9 y6 o  L! X* I
poll-class

4 J( Y5 j# h- G
/ }7 K9 }! |* \5 [setup-plots

" }7 x$ [6 I$ o' g% \1 \3 y3 H  r. I! b; d6 N7 s8 u0 D
do-plots
3 B0 L/ @1 U$ f5 e8 a. d& Q
end0 F+ O' _9 @9 n* k) y: G& s- ]% s
1 C( {( k6 f9 A6 j
to initialize-settings
- c, y  e5 \$ Z, W/ P1 p* V9 V5 z6 l) _" Z2 l8 Y  f
set global-reputation-list []

% h( l' D) o, N4 c$ l' C9 |" u, P% T+ [; i5 _% M  K
set credibility-list n-values people [0.5]

( ?0 E4 W0 ?4 ?3 i: e: N9 i9 A
. n7 r. U5 J# q$ d& Aset honest-service 0

0 c1 Z3 x8 Q) s2 @8 c
2 Q9 U- r3 |8 D9 p( Q, R6 I; Z: tset unhonest-service 0
& h  f& X% b' ?) t

1 w/ Y+ [- a* w2 P* xset oscillation 0

8 Z! y# A8 ]9 W, }' |5 j6 |: {/ z! B* E. s3 }, i4 `( x) t) g
set rand-dynamic 0

: t. i; E5 w2 ?9 C8 D( nend0 O7 X# y7 q9 p2 f. g7 b
; A0 x$ @- L  T. _. z9 o
to setup-turtles
: Y; b$ T) {& x  M# m9 O4 u) Fset shape "person"; e5 [! p0 o6 g% e
setxy random-xcor random-ycor
% `/ x  i* s8 E: [+ H4 w$ Q, l" Yset trade-record-one []8 n) i. K) x+ |  ?( q
3 M3 @) \# w$ k% Z, R0 P& I
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 g6 N& f8 a+ c, m; g- }1 x

) m$ u# e6 Z+ y1 l! U- eset trade-record-current []
8 ^( E' S; @; O8 vset credibility-receive []! I8 \8 S0 E+ {5 |' S3 O: g
set local-reputation 0.53 T' M6 l% X4 [: y# p/ M4 H
set neighbor-total 0: H$ R& v" k. S% E) Z4 V" e
set trade-times-total 0; p% z. t' T3 X
set trade-money-total 0" s' a5 o) Y: ]1 I2 N
set customer nobody  F4 a+ n( q8 M" F. b: Z8 J
set credibility-all n-values people [creat-credibility]
, |* a' E" [2 c- f& H3 n- |, Iset credibility n-values people [-1]& [4 j2 w( }( F" |/ k
get-color9 s) m. M" \, n3 L/ d1 w; c
8 k9 B+ g  O' K, a" N
end4 h3 M" I5 L% X. R
. h/ e4 H  b/ O  D" O) r" W4 }
to-report creat-credibility6 d+ _$ m5 `4 X
report n-values people [0.5]
. [1 n! F: ?  k: q; Y1 Aend4 n7 z$ ^; k. a( I2 }; H
# \. s& I" |& x1 v: O
to setup-plots
" g# u6 x1 E  Y3 g  q7 ?5 W
$ n+ m: H4 U, k5 L5 [set xmax 30

2 `& u+ Q0 G& E
$ Z. M" o% v) A9 l* t! W7 sset ymax 1.0

" N8 F, U7 M, i. C) ?  q% \( M  @& Q8 X7 x
clear-all-plots

/ x  q, S/ y6 l% @- ?! E
6 A: ^' Y6 u; Xsetup-plot1

5 W6 J4 j9 m% M1 Z7 B
7 \+ w# R! [* T8 Jsetup-plot2
% \! ~, e% n4 C% E1 j
3 _- m. _/ i+ `! ~4 j
setup-plot3

+ |% e7 c5 x9 K/ s$ [( pend0 r( M( |  E& W

. @5 T$ \2 W- M; k( C7 n;;run time procedures) j+ z3 M. G9 ]* L, i% ?/ h

' i& h- H3 g( ?+ Zto go7 l8 E/ j$ N/ @! x3 _- q2 q7 }9 Y

; F4 ^/ c2 N$ Bask turtles [do-business]

9 ]. N5 E) H* e4 w1 l! Cend
. ~& y; h6 B8 U  k$ V) ^
/ R: q, \- Q1 @, p: b" g. |+ {to do-business
! I) s! r: F( q& _

$ V# X7 n5 j9 r' E6 K$ S/ c
: u( e1 d2 F+ s7 o* ~  z5 u; prt random 360
# W/ z- O2 Z  A$ F4 C9 S

4 A% p  V& z8 |5 kfd 1

& S# K2 N7 A' M& H+ M! c! K5 d; P- f2 d
ifelse(other turtles-here != nobody)[
; b% ?- }' [. s7 x+ s$ R

! B& s) Z! \/ [8 f9 U# xset customer one-of other turtles-here

) ]1 ]7 E) Z, W$ i) g. O
9 G+ x- G+ B' j2 Q* F7 u4 @7 d8 n;; set [customer] of customer myself
! U( Z3 {& j9 O' j+ W& W- Q" h5 `
% v4 J$ W3 h2 Z7 v
set [trade-record-one] of self item (([who] of customer) - 1)
/ q# z$ k2 M5 k) }[trade-record-all]of self. G  o: ?4 d7 _7 k9 \6 R
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% Z% d4 i5 V1 ]. g. h7 E; n# J1 ]* t# b2 W
. ~: \7 [$ u: w4 S2 wset [trade-record-one] of customer item (([who] of self) - 1)$ ?* m, V, h$ Y  D0 O/ a, w
[trade-record-all]of customer

" L5 x3 K7 Q$ S' Y. d& a3 ?% o
6 |/ P& K% D% Pset [trade-record-one-len] of self length [trade-record-one] of self

4 b$ W( |: m% ^7 Y( [8 `  u- F: Y  R. x/ D
set trade-record-current( list (timer) (random money-upper-limit))
5 I2 l! o. {7 Q; [0 s( Z; `) t
, a# ]6 u* k4 \/ a" z; g
ask self [do-trust]
: K+ J3 k) h, B! ^3 R4 q;;
先求ij的信任度+ r( n' U! u8 I2 M+ t+ F* l

6 U+ o: d% {. ?& Z4 ~/ dif ([trust-ok] of self)
' I( E2 A/ ~0 o2 `0 L3 x;;
根据ij的信任度来决定是否与j进行交易[
. U3 @! F3 U3 W9 c; h4 {  hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 v: Q- t6 f2 ^- d" [

9 E! i) q, j5 C! I3 x9 w[
0 o* i8 ^* L# S
4 E) b" k* {# S* _. V3 e. o
do-trade

, }! Z1 z6 F4 y/ a/ x; X3 G, C+ I/ N/ k6 n$ j7 l( I7 z
update-credibility-ijl
: \1 b0 ?+ X) G$ B# D  p

/ |! T; Y+ i. M" g, oupdate-credibility-list9 O6 a8 @( f# z$ ]: P9 }/ ~

4 O# J$ P' J" V+ {, \* j, r1 w
# H+ n1 ^- A( A' }update-global-reputation-list
' H6 m, U7 }# @4 E% U) ^

* ]7 |0 p6 ~; c* E- Epoll-class

  z: c1 ?  P6 U* S* Y% q/ r. \
( v+ [  B7 J1 G# {) s: g) @" N# `- Lget-color
+ m1 l5 k2 ?) J/ b/ h# b

+ H, ^* `& l1 V. v) A]]
5 f3 G' Y/ o9 M+ Y8 a2 M/ u  ?2 a0 ]
;;
如果所得的信任度满足条件,则进行交易0 e# j4 Z- _8 t; A4 ^
3 Q; G  p9 \( `
[
- Y7 k) t$ d3 z+ O0 u$ h9 _; \
& k$ f" j( p. a
rt random 360

0 y. H3 I3 `: h: B0 I/ L
: q3 P0 u+ G9 U5 X$ rfd 1

7 D5 T2 d( _- W2 F
/ _3 G5 M/ D7 I2 ]) V]

/ C& D+ P5 v. f/ ]$ d2 |/ D" d
# u$ t* S+ N' r2 t. b" I& z0 ^9 `end

" e4 X- I; N2 c2 |# a1 c; x6 L* T4 ]1 }
to do-trust
( |0 v4 t. g/ {2 H4 e; n! s% iset trust-ok False# I/ P: d- W$ G( v+ Y
! a# V- Z1 t/ Q8 R) X
! [6 k3 h* b3 W
let max-trade-times 0
1 ?% d: B6 z# H% Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 V' C' o+ x9 S$ l3 N9 ~8 T8 K
let max-trade-money 0
- `3 s2 o' z2 }7 M! s% O! gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ u, H. d/ V. @0 D% D0 K% g( F* B; g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( }: |' v9 N/ A" b

4 o1 p2 R3 k" \" b# b0 S
- U  n% T! J$ V" r0 b' M
get-global-proportion
: @: R* _6 F; O! a2 f6 ylet trust-value% J" r( v4 n- t- w, Y
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)
: Z1 z, [* Z& h4 Y5 y' w( ~
if(trust-value > trade-trust-value): I2 c, J9 E+ y" v5 D; ^  w
[set trust-ok true]
( _' X; D  ~$ |end
8 r, c& u- M; A1 F2 Q; M3 M8 G2 i( M5 m/ F; a7 h
to get-global-proportion. i1 n8 N8 t6 q* b/ |. L8 o
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ J7 \4 a6 y# q9 \3 N" q[set global-proportion 0]) j5 a5 k) R/ w+ d: O# y
[let i 0
1 \. L0 |6 ?4 D* plet sum-money 0
2 R; |- |4 j6 b/ C% ?" g- u' T5 Swhile[ i < people]1 T$ J; r: f6 I. {2 t- I
[
- w9 \4 \2 q0 i( {' O- Nif( length (item i) s  {6 {# z9 i9 j
[trade-record-all] of customer) > 3 )

. P# u1 E% {. N8 O[  Q; ]$ c; |" Y" N' @1 f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 Q2 P5 ]* f# C/ z0 M6 E% A
]
  }3 z% o  Q+ l- a* w; u( T0 ]]; s% Q4 {2 k/ g6 w
let j 0
' l7 i6 F9 L: h* @* j% Hlet note 0
! E7 t; j5 Z9 S0 |0 Fwhile[ j < people]4 I! @2 @6 ~( H1 r
[6 B% h! O1 n0 o" z2 S/ Z
if( length (item i
& i& _3 }* K  B9 I2 P[trade-record-all] of customer) > 3 )
! Z. R3 l  [% Z7 y/ @# o7 ?
[- x: h: {) o! \4 I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 n7 C% u/ T- N8 K3 n( ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ A1 B0 F; P2 |
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ ]8 X, A: C5 z6 v, I$ Z* O* n]; X3 P/ `' H7 R/ ]) j0 K
]
& Z8 Z& t9 A) l- p1 x. o, Wset global-proportion note
5 _% E2 e5 j. U- Q0 i3 _]
. v1 E5 \0 a. q9 ~end
2 }$ q# _$ G  D6 `- z' W( }* c8 i+ k
* I: Z6 ]" I$ w, E: q$ Vto do-trade
1 C. G* ^2 x$ D8 r- H  ?: z;;
这个过程实际上是给双方作出评价的过程
8 a$ s" E: L8 h9 o' e8 gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' V% ?8 U8 B! D0 f* yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' n" R! \1 z* s1 }' p; Nset trade-record-current lput(timer) trade-record-current. }2 _, [5 @4 l9 P* a
;;
评价时间5 d0 [- G+ m) ]# i# B: V: a
ask myself [3 N6 N2 ~0 n. x! j
update-local-reputation! [8 Z1 d8 L7 O$ ?# }; d
set trade-record-current lput([local-reputation] of myself) trade-record-current" s9 t5 K5 |, y' L0 i
]
6 D6 j8 }7 V: m7 x8 S# Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ r) m' c' a. \! [( L;;
将此次交易的记录加入到trade-record-one- h% o- p7 C7 B+ v$ A' B) G' }
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 ^1 n" ^7 I8 T' tlet note (item 2 trade-record-current )# s9 ~0 q7 l/ _; a6 s0 c
set trade-record-current
1 W# w) b( ~; Q, g( @2 J1 O(replace-item 2 trade-record-current (item 3 trade-record-current))
7 _# e: D8 {1 r1 U
set trade-record-current6 m) S9 d) B5 O) g1 F& `9 i% m
(replace-item 3 trade-record-current note). h1 }8 R# _- `3 u  c

: N  j# I: s! Y
1 [2 p  f' j$ ^5 _. n
ask customer [7 r; ?6 v- e& d% e) W! W: G$ H
update-local-reputation' d9 x2 g: z) \3 p: ?+ X7 |
set trade-record-current$ R8 v) s5 K2 z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ \  o+ q% u3 c]( I5 M' @. r% {" s. B) V( m
  m( x& d. I% z1 F0 J2 Q# G8 u

1 I' r' i9 p: u! N- _3 [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 L- m( o+ g, [# X4 Q# G) g
" o5 V3 `, ~( \9 I% n
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  V% I1 d/ O5 D! z- j' W3 A, x
;;
将此次交易的记录加入到customertrade-record-all6 }! a3 {. E  N, ^, H) y$ n
end2 v  b' e& h1 d1 S! c0 g5 s; F

# q' P" R6 R$ b3 cto update-local-reputation
4 x0 `- `& m; ]set [trade-record-one-len] of myself length [trade-record-one] of myself
3 Q7 J% @7 D% v) E( i2 w" C4 h: A  H1 n7 A8 c7 v
6 _, V; y8 C7 {( {8 l9 Q$ x
;;if [trade-record-one-len] of myself > 3
; `1 s2 ~# l; U6 e
update-neighbor-total) D- s+ ~% X7 B0 B( B7 n+ U
;;
更新邻居节点的数目,在此进行
% v3 M# I% J. x' B* m% X7 `let i 3. e( i; Q/ q2 `# A' c* y6 |) u
let sum-time 01 i8 z7 w1 F9 A4 S6 M
while[i < [trade-record-one-len] of myself]$ h8 I( B8 N+ B; R$ L
[% O% ^( M: m9 I; U! v2 u* @9 z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% u' U6 [5 q) U# s' l! kset i
" V) d$ \7 z2 g0 b* u2 z! {8 M- Z  W( i + 1)

, E. K/ _# N4 F]
8 r; I8 i# i- mlet j 3
0 q3 Y! L4 [, _3 @9 O' ~let sum-money 00 d: Y6 `0 ]0 R2 F# I+ z1 S" J- x
while[j < [trade-record-one-len] of myself], u0 t" Z: w1 ?8 \' c3 w
[& P. a4 y. g+ c+ y
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)
3 R- K; B4 b3 H- Tset j) v+ a/ r# V/ n, z+ B
( j + 1)

2 n7 S& J. B/ N/ N]& ~/ j" D' Z" c  _; O  J; f
let k 3
" t: g2 h+ j1 I0 slet power 01 N2 n7 X* W3 d) ~
let local 0" I. J6 R/ Z4 K/ R6 A* w# d: a
while [k <[trade-record-one-len] of myself]# S( @. c4 a4 H5 K, @& h4 t
[
9 |  l" n* t$ G  I! |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)
: l6 U+ z: ~5 }1 J; |( X  Vset k (k + 1)
, J; k0 l6 E+ B+ @: d]
8 v1 w$ |4 K9 Q$ E  k3 pset [local-reputation] of myself (local)- Q4 X5 t5 H* n: W7 H1 B5 N
end
; |- e- D& O5 V: N/ p9 r  e. g6 z  {& {0 v" t- W
to update-neighbor-total
4 F0 p" \9 Z& Y! r* @
: J- p6 Z" Y# Z3 d( T5 s  c/ p1 C% ~' Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" k% Q; p! }) _! S& p
5 {  T9 G+ k- n) w& Q, A9 ]- v7 H$ v
: x2 `% P% V0 A
end
# Z. ]: n6 f) ~1 h
: ~: C+ W$ Q6 ^& ^! Sto update-credibility-ijl " y, j; c" [6 s* |+ |

5 U8 k1 e3 [* F# M! W8 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。
4 ^. ]% z& G( g; w) u! Jlet l 00 b& ^' u7 x8 k7 s* n% a
while[ l < people ]0 G" o2 W9 |; }* X  {
;;
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" D) |& Q+ V% _! d5 D# \8 Y
[/ _5 w  K3 k" n& N9 e' g% a% v# b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( K8 j; E% u  ]7 `
if (trade-record-one-j-l-len > 3)  X; y! g6 s! j! F0 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
0 S: L- o. z7 Z1 i0 c( B; ulet i 39 S; b, b: ~* f0 a9 }* J+ v
let sum-time 0
5 ]1 {, Q! G! S7 c% z" _while[i < trade-record-one-len]3 u7 U0 e# ^3 T8 g
[
1 L/ Y5 u5 ?  m$ Zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" p3 o: `) D5 m6 Q+ K! G+ cset i
5 |3 t4 k( f  A7 U7 I( i + 1)

6 `0 k! V; K) J. Q% G) J* J7 []
) b/ S& J* b. Z8 f6 r8 Glet credibility-i-j-l 0
6 f: v0 N" u$ p  N/ x1 y3 N3 K. F, h3 F4 u;;i
评价(jjl的评价)9 ]3 B9 b3 Z: h; d, r7 L6 C% v/ a+ C
let j 3! k+ Y5 U' @/ J* E% y) B
let k 4! Q0 E/ }9 v0 w
while[j < trade-record-one-len]
3 e, T6 e, |, h% B/ y3 A[1 V) Q8 V- s) n5 ~4 O+ s9 c4 s% ^
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* p, M0 T+ F% P- q; v7 T) _
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)
( Q  K( [) p0 G/ v9 _set j! }& w1 l0 d) I
( j + 1)
! J, Y" T4 o$ |' f; C
]6 O+ f- }  d9 C; a% Z
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 ))
7 |- o2 y7 u$ n2 ~) Y5 _
  z6 ^- Z! _5 e! A+ Z  Q: s6 D- S( E

) m# h  O5 O6 Y% Rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); B8 n: X6 e6 f- Q. ^. A" D# K
;;
及时更新il的评价质量的评价
( @# l) x/ j# }5 Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 g7 b2 u9 {9 ~" [- jset l (l + 1). [- X% }6 G# R6 w6 v8 Z" ^; f/ ?
]
( _2 R5 \" x# x& \end
4 t& z- p/ F# l% c5 G
3 [' p6 @! |2 b+ X* \7 r  Z' j, |/ }to update-credibility-list
8 {8 o# J- ^/ i' [* j) J( Nlet i 0
) }6 `1 E) @0 H+ ~4 z# Z& Gwhile[i < people]- ]! d* q+ K$ [; ]# k4 [, |
[; J6 t! ~1 l  n2 r& b8 y
let j 0  y1 P3 i# d( _1 W( w
let note 05 }! N" O( z0 z. {' |8 l
let k 0
) [6 }9 ]# q! I;;
计作出过评价的邻居节点的数目2 ~& Q& c$ L9 s- N. y/ }7 }9 k
while[j < people]* B0 ?4 l4 m# F1 S7 X" r
[
$ u) ?9 _6 C3 J' j: ]if (item j( [credibility] of turtle (i + 1)) != -1)
# c" {6 @' P% A% Y;;
判断是否给本turtle的评价质量做出过评价的节点
; [! j- D! K4 x[set note (note + item j ([credibility]of turtle (i + 1)))
- s' C, k5 [) M" K5 t$ d0 G1 a;;*(exp (-(people - 2)))/(people - 2))]
+ J" B) o, M$ ~
set k (k + 1), X- y! ?# m  s6 |3 _9 Y
]
, c8 e  f) U6 o9 Fset j (j + 1). c+ O. z' ~( {( [3 b$ H
]* Z0 o5 t$ q1 N: \
set note (note *(exp (- (1 / k)))/ k)- }5 W" Y+ {5 t
set credibility-list (replace-item i credibility-list note)
, ^" q' x1 m6 z1 jset i (i + 1)
* [0 X$ B. o4 N]
4 T6 @  c( p, Y4 q! ^# a- @4 o$ Tend
1 B! g: e3 ]' ?/ v3 l/ r' l# z: w' U. ?- |0 O7 a# V
to update-global-reputation-list
$ R. w. o( M# Z% p9 y2 M/ zlet j 0
/ Y3 A# Y2 U' _$ v2 _& x* gwhile[j < people]) u( f+ X  Z7 b$ `! Z$ U8 p
[- h; c% h1 |5 D8 P5 G% E5 P
let new 0: `/ T, ?! I9 N& |+ k. Y
;;
暂存新的一个全局声誉
: I. I# X; w$ D7 A* z0 E( w2 ylet i 0% H' P( n$ V9 Q6 Z  {
let sum-money 0
% }% K" t& @; V0 u2 O% S4 Z& f) wlet credibility-money 0" J) I$ a. D1 @9 o$ H
while [i < people]
* j& E4 o# @, {[
6 h2 y4 s# M, Wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- b( B3 w8 N6 {( W. c+ N% c* ]set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 `, W3 M8 @: A2 Y9 B. S! n; [set i (i + 1)5 k2 l8 V" B+ [1 \, k! G
]- f+ X; Z- x1 Z, H
let k 0( S! U7 W; K8 H/ R" N0 c
let new1 0
) F9 ^; W( i% o% p2 c' `2 Lwhile [k < people]
' ?/ z1 C# Q& Z6 X/ ]7 s7 _[
% a1 l% U5 r. j' h' n; J  vset 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)% \+ S8 @% A9 \
set k (k + 1)
  j6 S: p5 N" f: P' t& \0 g]$ d9 z6 z0 E! |
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# A4 o! F2 @5 U6 ?3 {/ s7 C% Dset global-reputation-list (replace-item j global-reputation-list new)
1 N' V- b) f0 I/ @1 b6 U5 j* Fset j (j + 1)- |8 x7 Q8 d- g; n" _+ U
]
: ]" R" @; [2 R8 k9 m' Mend3 Y  i0 [5 w; ?' R

3 `" v  L3 D' v) M5 v) W7 \# z- m# K: W- X9 K

) Y( A- S5 K8 nto get-color
5 K  b" _- q# {0 ^+ |* k$ I( ?3 [+ ~; _7 h+ R5 V- l( M# y# q5 z
set color blue
5 `0 A8 i5 \, Q' F
end
( D0 `1 \" E, {, ^3 W) w3 |5 Z! L3 b( z* W- i2 ?
to poll-class
3 o4 i# ~- C' E% L1 g: nend
# _8 l( [% |8 P4 {. ~5 }, J3 x  n2 e  H
to setup-plot1
6 R! X+ x9 L+ f, a- q6 v. _8 |3 L" k( N! ~' W. f
set-current-plot "Trends-of-Local-reputation"

8 k' b2 N( s# }* s$ e" L1 J6 s! q# ~- B7 @) Y
set-plot-x-range 0 xmax
1 g% d3 G+ P4 H' `7 t0 e; l

! A' O4 x- r. i9 aset-plot-y-range 0.0 ymax
. d8 v- T& d1 f/ _+ ]* o8 ^
end
4 A* b2 ~0 D8 {) C
3 Q9 K" N& z+ F8 \, ^to setup-plot2
" ?2 j4 Q  f+ V% A% z& v5 |& B/ W
8 w* x+ p: S" z! w7 E6 W2 zset-current-plot "Trends-of-global-reputation"
. h2 z. T( U, K  K( }
( P8 ?" C. n* m, |9 ?
set-plot-x-range 0 xmax

% q+ q& U% @3 m3 r1 }! T; c0 F- C
7 ]) s  W0 f2 ~7 i$ N6 z  vset-plot-y-range 0.0 ymax

1 e/ q6 [2 P- q% P/ Z' E, r3 oend5 q! [( P) R3 h4 k4 O' G1 v: ]

% n) g% N" p  _) T8 c  a" kto setup-plot37 L+ L7 `1 e; F, S  B9 Z. [/ z

. L4 ]" R6 z8 D, Kset-current-plot "Trends-of-credibility"
) C8 h; h. a+ O9 T1 ?* B& C

* W5 O( q* F; ~; c( ]set-plot-x-range 0 xmax

! ?4 g8 D3 J/ i4 j( S
8 p! @+ b; ^* Y# Gset-plot-y-range 0.0 ymax

7 f% p6 Z0 G" \0 k5 Zend
6 J: y5 y+ m$ r+ R6 ~+ q) N
* t/ r( g  Z1 C9 \to do-plots
" u4 C3 l/ ~. r/ C* C0 w( w, Lset-current-plot "Trends-of-Local-reputation"5 T) Z" r2 L- C
set-current-plot-pen "Honest service"  ?, H9 Z, J) a/ O3 k5 ?
end
9 r2 v5 ~  y6 `6 J. d; h
/ U  ^. g; A* e8 B, x) c. n$ b[ 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.' U+ W  }9 x5 \( a1 B7 s1 D' X4 y

5 K1 r9 ]% R8 T2 _9 ?2 _! c) @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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