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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 B4 K/ i* |' Vto do-business
- ?0 [/ [  ^/ F) V+ h rt random 360
) q, {; y' ^+ W3 I% j8 p fd 1& w/ ^6 O( o) I; o3 a
ifelse(other turtles-here != nobody)[
% t4 M4 P" p- @* [# L3 n$ H" f  T   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.- s& {+ v( c% c& P6 o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / c% |9 ^! B8 [5 X3 O
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' d  I. x* v* I4 A
   set [trade-record-one-len] of self length [trade-record-one] of self
, y9 |5 _6 ^4 R# [1 h5 W4 i   set trade-record-current( list (timer) (random money-upper-limit))
# j$ n" q. B  ?" k' r: |) z/ e4 N1 A5 Z  x9 O9 F
问题的提示如下:
- g! E; W9 P; a4 A; z7 O. P7 Z( o% D
" J) U% h, f. |5 ?- j- Herror while turtle 50 running OF in procedure DO-BUSINESS; x, x; G1 V5 T( P
  called by procedure GO
! y- Y0 _! q, q, Q6 l2 U% K, ?OF expected input to be a turtle agentset or turtle but got NOBODY instead., G7 U( Z2 c8 Q. C$ y
(halted running of go)
. [+ u, h% E( Y# `, O+ o' C
, g! Z, I5 ^1 t) b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~~
- ^! d& o0 ?/ L2 j( J/ ~9 W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, J4 C% F$ d; A. B
globals[
; o, W5 t) @8 t/ f5 M1 X! y! \xmax
! U- x- e9 v& c# c) W2 z% Oymax
$ ]! O: B4 ?) _  T! \8 {global-reputation-list8 ~9 K$ q. N0 E# D# ~

1 f$ G$ `8 c; r! n9 T* x) n;;
每一个turtle的全局声誉都存在此LIST
0 r1 ^! [8 G4 g) c& b. ^* ecredibility-list' n5 E( C( ?- R& B4 {
;;
每一个turtle的评价可信度: d7 ~- h/ }7 o1 k, L
honest-service: V4 C$ t6 b6 z4 x9 S
unhonest-service  l# i( d# c; [
oscillation
$ \/ T  W# y, r3 e- \- xrand-dynamic
- s! S2 A% S  }9 J) k]
+ Z# E  B9 q2 n" S! y  Y) Y1 g: c$ t, j" V3 p: Q$ U) }
turtles-own[5 A* d" \8 @  c8 q. [& i  h
trade-record-all8 j; h9 D( I; R7 D. W' E3 L/ U; O
;;a list of lists,
trade-record-one组成- n% ^% p2 [1 G
trade-record-one8 l" W- V! o3 G1 ]7 q' l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: R' ], l' W. k5 g8 _; |6 u: F/ W6 V
+ I! L0 a( P* ]1 W1 I
;;[
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]]! D8 G" Y+ Q( c/ h
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]. R% r( K/ |) @0 ^
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
! V$ y! F8 \/ [8 X) }9 |neighbor-total
; u( b2 {/ E; j3 _7 G( S$ {% ?' a;;
记录该turtle的邻居节点的数目  ^/ I, \7 H+ M: r
trade-time3 [: R# m, c; e7 C* b
;;
当前发生交易的turtle的交易时间# S2 t6 F! Q$ w  w* _) S
appraise-give
6 q/ g; Y  h0 k, e0 S* i;;
当前发生交易时给出的评价8 _" e9 l; [+ Z6 R! E4 R
appraise-receive
; f5 @2 z/ h2 K( L. E0 V+ Z;;
当前发生交易时收到的评价
: |& X( A, d/ H) t' bappraise-time" Z5 W5 ^  o6 }8 r( t1 m/ o3 r
;;
当前发生交易时的评价时间7 H- X' |( `$ I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 G9 Z1 B+ F. d: q
trade-times-total% a2 |5 e; m  H& x
;;
与当前turtle的交易总次数
! Y; W* p& a8 v1 P* Jtrade-money-total% a$ t5 l* a3 W4 G9 M) j
;;
与当前turtle的交易总金额" h( y% Q" w$ K+ a
local-reputation
9 m1 o  N- ?9 N$ S5 Vglobal-reputation
! k& U9 z1 `1 Acredibility) s7 S/ R" I9 ?& e: H5 ]3 X; ]
;;
评价可信度,每次交易后都需要更新
. p. J' \! U% w+ Scredibility-all
4 v8 @- U9 h5 ^" D: i# M& L3 F& S4 I;;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2 i8 C: [3 ]7 H  Z9 o

6 L; m) r0 l% f+ T/ b;;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
9 R, l3 r$ b. }1 Qcredibility-one4 b  r6 s4 ^& v" e, i" Q$ \
;;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people4 ?  K$ E! u: m
global-proportion0 L  g. k. R( u% u4 i8 L. `
customer- S7 w- Y; P5 U: O; D( S
customer-no0 P1 r2 `& o& L  i5 @
trust-ok
. q8 K7 ]# }2 vtrade-record-one-len;;trade-record-one的长度+ J/ ^: X9 W; n
]
6 r- M- _8 W  e/ L7 C; K; {2 c4 \8 l6 C' ]; M5 U- k
;;setup procedure- J- o/ K1 Z) B5 o3 A
- G4 Q4 l# n! p2 {, \
to setup1 P" q5 S' r* t# H! i) J

/ U! a" d6 j$ s' V" lca
$ S) _% e# R. h# `

: T' q6 X+ b  H6 G- ?initialize-settings

3 n( X/ I: n0 d2 }) U7 i
8 J+ F" C- g6 P; e! N8 w7 wcrt people [setup-turtles]

* J. c2 r, g" w$ \3 F8 x0 p9 ^
+ W, `+ H6 [, C3 K  A9 B- zreset-timer
2 _" l6 w) o# f( r
) ?/ C6 }  Q! D
poll-class
0 h# \+ n# `' o3 k2 v# N* ~
/ H$ g( T- D! d$ o  b2 B% K
setup-plots
+ j) d. L* p4 g3 E2 c

. Q% u$ g* H& \& E$ g$ C& Rdo-plots

  W+ d; `# d# w0 {end9 s, B& m6 i7 f$ ^
" P3 K9 {! _. a+ s8 E! U0 g
to initialize-settings
0 G& U+ m- ~& `/ h0 I% _
/ `# H2 f3 }; ?% m1 z8 fset global-reputation-list []
6 y8 e% s2 S5 ~
( g: k; l, L% H" V' j& C
set credibility-list n-values people [0.5]

. ?4 u; n# W. @3 m* F: u! o' I% v& Q& C7 k0 X& R
set honest-service 0
* O4 O. L$ |6 F8 q* y

. B2 B) S, Z7 m5 b7 lset unhonest-service 0
  a8 S# S  X5 X

, a0 ]" r" ?: |: F( Z) Tset oscillation 0
9 r4 p# I2 I3 Q0 S/ t- @0 c/ r

& H* ], h1 I% O! iset rand-dynamic 0
# p0 g: ]! b) {7 j
end& g$ u) s. c7 ]$ Z2 j

4 @4 S! R. n- Q/ G& N, k2 ^- oto setup-turtles
# Z4 _; J% E9 Y" X) ~& aset shape "person"
" f0 Y7 |+ E' G6 W# D5 m; j9 Csetxy random-xcor random-ycor& m8 l, I$ a( r$ r& H" b
set trade-record-one [], \. y7 \8 x5 x$ Q/ S; p: o
  b6 `3 Q/ Q! H$ _7 _& M% b
set trade-record-all n-values people [(list (? + 1) 0 0)]
! V" A  h" x) s6 v4 j6 d. s7 y7 u- G8 g

. o0 S& u; X$ p1 W+ A7 \set trade-record-current [], L% W3 s# K, o
set credibility-receive []
! _+ {" q# N/ K3 }set local-reputation 0.5$ Q% K3 a2 A& B! p" `/ u2 z  k
set neighbor-total 0
0 T5 ]$ r) V6 d- h+ N6 q+ h9 eset trade-times-total 0% E6 }! k- i# Q" }0 I
set trade-money-total 0! G. e4 t- @2 t7 x' U. _
set customer nobody; `2 b- W- Q3 {- z; \2 ]
set credibility-all n-values people [creat-credibility]
) S% I$ e! q" U* Uset credibility n-values people [-1]
' i4 ]- e. D4 l7 {get-color
' ]+ r1 f; ~: Q/ [. h2 `% \
3 b8 `2 [/ f) S/ ^, b$ U
end, p; k. B9 O" p
: I! g+ P' {( p5 P! L" v0 F8 ?
to-report creat-credibility
/ x) c+ L0 X9 D) v& {/ Ereport n-values people [0.5]7 P; j/ t+ [' S& ~
end
9 N# f1 G4 M( E* g$ \
+ |( V$ Y: X$ }3 t. v+ y) G" o6 Zto setup-plots
8 O: X( w7 e0 [0 T, v: z9 m0 ^9 G- j8 N. w1 j) I) u7 k
set xmax 30

$ d" j- R) n6 J6 v3 p1 i% I4 e. {# A( I" V: h( H
set ymax 1.0
% l9 J9 J6 T! l, G9 R0 L$ `# R

( Q: Q; S4 n5 B; Oclear-all-plots

9 G7 ]' {$ F% e3 ?+ n# d
( T+ d& K, Y1 f" q4 F" k, ]) D, Usetup-plot1
0 Z# s: i+ Z5 {: i: H
, K% H; v  {: v# e) {- Y
setup-plot2

' X% u  I4 Z' o+ `; h
) Z( F8 C$ f6 nsetup-plot3
2 C- ^! O8 Q( |& ]4 A! e7 F" a
end2 U% j$ N- |: _4 I

% D8 R0 {8 M' ?% }: V7 z% V;;run time procedures
4 G9 @- P: a# x
# r6 F) ~" ~3 M6 l" c" Oto go$ u) v7 b  m( E! U( z( x

4 K) b) I* L1 C( Q8 Qask turtles [do-business]
0 D! b; F" ~. x
end
8 r- ?' ~- W. P6 h7 U, j" e/ b7 e) X* Y
to do-business 7 _! B, I0 f" A5 k0 y5 |

- I5 O8 H9 i% ]: t9 s  }3 a+ B+ F4 C( _; u( q. h
rt random 360

3 u- j$ K4 W8 O9 c% L# }2 ~$ i& s
8 z" J$ ]5 f7 w- ?fd 1

) Y$ r' E5 o5 q! P& C) H8 P% n
ifelse(other turtles-here != nobody)[

( B! k1 z  s5 x! P: A9 t1 P! }* f5 Q2 `
set customer one-of other turtles-here
$ b- J! m- Z' U0 o. w

: {! H) h/ {7 t# ?1 y% S: q  U" J;; set [customer] of customer myself

" _) u; v  x5 C! s1 |' ]* f) }; C+ c( T/ l( {/ u5 ~
set [trade-record-one] of self item (([who] of customer) - 1)
! s, l% O% P! g  Z( T% V, \[trade-record-all]of self
1 w2 C: T9 D) T/ S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 p% B! r* w& R8 ^5 ^

- X8 `4 K9 [0 `' g4 ]/ I" bset [trade-record-one] of customer item (([who] of self) - 1)
4 U1 ~# K' T" @3 q1 ?2 Q[trade-record-all]of customer
3 A# [) e: m! p% l" M3 X% H1 j; i
6 `: v( R* d' n4 i1 g) Z
set [trade-record-one-len] of self length [trade-record-one] of self
* _  ?) R+ |% _/ v) t: Z
" M  k) x( u3 s
set trade-record-current( list (timer) (random money-upper-limit))

1 x+ ~; {4 j8 X  s) L: u# R& {& d( J0 G7 k2 J; K' H% K6 l
ask self [do-trust]& e+ t# d* g3 r" k2 b
;;
先求ij的信任度
4 Q6 D+ f$ I; D# Y) _" j% O; B* [8 t# B5 v
if ([trust-ok] of self)
. I. k* `% l* v; f# h& @8 r$ e! O;;
根据ij的信任度来决定是否与j进行交易[
* Z; B5 ~+ m& o# jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 B: O: C0 f4 e# Q$ d: O  s* G  N; v
[
2 m- t9 l0 \; m! X2 h2 Z

  b1 K, g% G! X. j! s$ A- odo-trade

, w8 `+ R8 v! n) [* v  ^& G1 @; h9 ~! \6 ^
update-credibility-ijl
- f6 O& E3 N7 n) i" I
% e( N2 O3 o8 X0 j# q1 W
update-credibility-list
" e# P6 L1 V+ x/ O0 W+ V1 L
8 _  O3 q# ~2 Z

$ t- h3 V" M' R8 I5 ?  r" {1 Yupdate-global-reputation-list

5 v+ x' v9 D6 i* b1 C: G" x: a
& v! V/ h, H9 ^+ qpoll-class
% s% A1 I" O( {' q3 H8 k

- Q& e% y4 _- U/ f$ O; I# Oget-color
) a, C3 w5 O' U1 d

4 q2 v8 W! c8 U. d]]
( C* x. r5 B3 {% L' k# C, |8 L; z
;;
如果所得的信任度满足条件,则进行交易) N$ H, S) @- J7 n& s

0 r4 V. i- L* [* v  S0 g3 B; b[
" h/ K/ _* _/ u+ U& ]
8 U# C" Z  ?$ {
rt random 360
- Y; P' F1 X. ?: F, j8 q; x/ D

5 {- Q* }! M2 ~$ V4 A' z  c; N1 Zfd 1

$ f8 h6 L! d* o& `" o3 x3 ~5 s
5 A) Z* R. S9 Z% g3 G7 M. z/ \( Z]

# S6 l5 v$ W! Q* I
7 G; }" X! }- }( eend
) y& y. Y- q5 K( t

& a+ b( |, K; T; e4 Q) D, Kto do-trust 3 U% f7 P/ k* G. Z( Q
set trust-ok False4 `% t$ ~& G, r1 n5 \
/ _2 K3 q9 r3 `5 u2 h, `
: L" F7 _! q1 B
let max-trade-times 0
+ ?" R6 g3 l' r# a# N) Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# n: z. W  t5 |" ^- `let max-trade-money 0% `# M4 S8 ~  C- a3 v# q4 W
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  T8 I) t0 y0 S4 k' w8 Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), I5 Y8 i& F4 l. F
) |" [! D( T! O6 ?5 m. R
4 X6 F9 I5 M  r2 U0 O
get-global-proportion" T- O+ z# K. q2 E7 `( O
let trust-value; w! A0 [3 E& {3 a/ l& G
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)
: l8 G* O, h+ O) [9 i& M
if(trust-value > trade-trust-value)7 K. e9 J0 Y" g; d
[set trust-ok true]
% Y7 L3 N7 C5 \0 M8 kend$ g; s: _- \* ]( H& G2 K1 n8 R
  x" p, q# b  v8 V8 g
to get-global-proportion
2 w5 N% J; y; T( U) o, Fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 O5 q) x* Q. u# \[set global-proportion 0]$ f- W* g- X  E; t
[let i 08 i$ b* H9 f6 j& ~6 Y
let sum-money 0
) m% N& w6 s+ D* N$ `* q5 J: g8 Kwhile[ i < people]
$ |0 w7 I! m9 C& F8 D: y& g[& j& }6 {5 J* k4 z+ v4 x, h5 M
if( length (item i
3 u1 U3 z0 B5 I* H3 l[trade-record-all] of customer) > 3 )
1 k# h! q7 z" Y0 C' [* Q
[9 J- s0 z6 P6 C" |
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 s* N, S$ b5 w$ M0 `& l3 O
]
' x; O% S" f8 R' k. ~3 A]
6 ^; U$ N1 C( r! B4 q2 Y1 {% Y3 Dlet j 0! R# @) r( K1 {' k. f& f$ j  c" j
let note 0
" ~, ?# L4 X0 ^7 n* v! wwhile[ j < people]; W% o/ ?) {2 r9 r0 z. u* c
[  L( {8 ?9 x# N
if( length (item i
& R7 T/ Z8 s4 b8 R, C. g[trade-record-all] of customer) > 3 )

6 L! T* P" w, l1 c[( m2 l  w5 S  L' O7 p- S/ P6 e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  P, F) d7 v# p, ]8 h[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" g, F( O- E/ d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% A9 z. q% S/ d* p! `/ y$ W& b0 E]
0 [! n; q9 W5 n6 f]
7 K% O3 k; k" G- B, Lset global-proportion note( b0 W$ c1 {1 u9 p8 J7 s
]
9 l( u* O7 C" ^; Uend/ r4 f& e1 h: r7 o
8 f( K& D5 c( h) C. X3 X
to do-trade1 V, D/ p/ V3 y1 G& J# {2 H
;;
这个过程实际上是给双方作出评价的过程
. H+ W/ ]0 ?9 e" A( y8 r1 Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 `3 r9 @# o4 M8 Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- ]' n  a9 d2 b2 Tset trade-record-current lput(timer) trade-record-current
2 d* q1 Z0 ^' i  L$ x  u. L( N;;
评价时间
* j6 g# E& B4 f. Sask myself [
& p4 r) B) G. x8 S0 A5 e5 q7 }update-local-reputation
/ H5 O! S' A0 y* Hset trade-record-current lput([local-reputation] of myself) trade-record-current7 @! B! y  [2 t% r  d( O9 ~
]
# g* A4 N6 @1 Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 u& i6 V" _" F4 k' U
;;
将此次交易的记录加入到trade-record-one# T) v0 q' J$ o% Q# C9 i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" I  [, y) |2 G% L+ L. M  Hlet note (item 2 trade-record-current ); O, U) Q+ w6 F5 z
set trade-record-current+ g8 b8 q$ S3 ^0 L, p/ W
(replace-item 2 trade-record-current (item 3 trade-record-current))

2 _+ k7 M; k/ R" M2 ^- Uset trade-record-current
  d# x" E6 `$ d* u0 R(replace-item 3 trade-record-current note)4 g% G( p$ s9 l1 Z" J  r; C3 a
0 [; o7 n2 C! Q# S

: D$ m- E" F$ b$ _/ Vask customer [
! H2 F. b, Q. V& K: g. r9 K3 ]update-local-reputation
# u# L0 f; A7 Fset trade-record-current' `  t' Z7 l/ t6 k7 x- K  T9 z8 M$ A
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ a, j; {. z, @  r0 T' i
]
8 D+ i. W/ F" l% P: p; f/ U2 G8 m' h8 j& f( I

% b5 r- d: N1 l1 j4 o6 @set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 Q. _7 v5 Y" m# B8 R8 k. S2 y

. v' d% V! D0 s/ }+ U; Uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- n" N3 z0 t7 a
;;
将此次交易的记录加入到customertrade-record-all6 G7 b" ^) `( j* o) i
end# H) `) C1 z; U  b. j8 [

- C" o4 `6 [- Oto update-local-reputation
& _8 q( V, C' r7 i9 }set [trade-record-one-len] of myself length [trade-record-one] of myself
3 F( h$ P3 S# ~% ?7 F: F
- x8 A" h5 Y6 z8 [: w# e) d' a2 Y0 U) x" J. ~9 U1 O
;;if [trade-record-one-len] of myself > 3

, C, S7 d3 |& h! _  ]: }8 Xupdate-neighbor-total6 T" q% C# m% X1 R: I
;;
更新邻居节点的数目,在此进行; E; U/ S( n8 _1 c" ?
let i 3
5 J  o- r% z3 F5 |0 Q0 a" b' Jlet sum-time 06 }/ |9 A9 c4 x0 K
while[i < [trade-record-one-len] of myself]# _% H4 ~. Z9 X1 U
[. I8 y( q' B9 V" H3 V" v* m9 l( O( g1 q5 s- Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 I& q7 {5 ?  b1 [; c6 A7 ]
set i
7 h! L5 g$ `! y: i* v6 R( i + 1)
; v$ ?" \; x: F: N
]) y7 O$ j& M) V
let j 3" ~- T: K9 Q( ]1 H2 h# U% P: a
let sum-money 0
# T) T+ i6 ?$ z" d' C' K9 hwhile[j < [trade-record-one-len] of myself]
0 ?: g% Z; p% N9 f. \: Z[, b* p  m" [( T) m
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)& b* H. ]: |6 {- ^$ Q
set j
! n& E4 {* F- d- y# J0 L! I6 ^( j + 1)

0 `# j2 C& J; Y/ `]/ T! n/ F) y: q7 o0 p* h
let k 32 d% `, \3 a, @4 K
let power 0
& g" r6 a" g. t! O# ilet local 0* b0 R/ |7 E; X5 q
while [k <[trade-record-one-len] of myself]) B( r4 r$ D+ q5 F3 @
[: ?; R$ [8 C5 l4 R3 Z! ^
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)
1 ?, d, U( t) _) t% ?, Aset k (k + 1)* V. C- E$ W; _( N! a+ g6 G+ n
]
  Z3 n( q' m; S( S$ r0 I& tset [local-reputation] of myself (local)
2 ]) @* k2 c& j. T- s2 v7 S3 Aend
" K6 u5 g5 y* m* b- w5 @- N! c5 p1 {$ R0 s, j
to update-neighbor-total8 Z; U& ~6 ?- ~
' W) s( g1 B& |/ g0 C9 d  C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. o: t9 ^& q" D; W

0 A9 r( d: e5 f4 X1 L
. @5 U- \1 P/ s$ `1 N0 c
end8 P0 q% K4 [  l, ~8 {
' B% f1 ?  n  w' f
to update-credibility-ijl ' _% f* v& \3 o5 _

- {, [& c4 b$ |+ 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。
/ e( q6 T; n- i7 o/ v& n" flet l 03 }3 O; S/ y7 a. q" o0 x9 ]; L& _
while[ l < people ]' R1 m/ q' d; i( B+ F/ t
;;
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* |) C0 K" v$ L4 b4 t( t' W
[
, e' H4 g$ r* D' w, Wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ Z8 p% Y% d" E. A* d4 m7 T8 w* Mif (trade-record-one-j-l-len > 3)
$ e; r& G2 x8 S. C6 x/ O[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" r- a: P$ {) v8 s& f  B, s6 r
let i 3
9 c7 a7 M% i* d4 K1 d% s7 qlet sum-time 0$ S8 B) t5 Q0 X* ?" @- M
while[i < trade-record-one-len]
1 k- K9 I9 i9 Z, _' n4 [[
/ L6 G4 p# |1 _' I! I6 c/ j4 l- O+ |set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 X, M1 v3 J. i' kset i: ~  A0 X  f% U+ r$ g
( i + 1)

, i" O2 H2 ?+ A4 w/ X2 n7 t]5 h* ?. w0 f3 L) {
let credibility-i-j-l 05 G( z- U1 S! n. M) L
;;i
评价(jjl的评价)
! C, {0 X. K* a3 L. |let j 3* h3 q; o' Z/ ^/ E; b
let k 4/ ?) C7 v  }6 e8 k/ G# P  W
while[j < trade-record-one-len]4 ~: n' F: H* Q2 A
[4 T) c) [% i  j( s8 L
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
5 y& B+ g' d& ^: vset 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)* X5 w# A7 Y. d* ?! R  q, G! {5 R
set j# m  [$ S7 Q) I5 {+ @6 V# k, Q9 {9 ^
( j + 1)

* k- K# a. g3 r! P9 }& f6 I3 i]
! V* |4 Y  N2 s. Bset [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 ))/ t: Q0 j5 [/ p

, J* X9 |! x' r9 _
8 m7 p8 X2 k) E4 b7 U8 L. Z! j
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! o- ^+ D3 z9 ~8 c7 T6 @$ k;;
及时更新il的评价质量的评价9 F7 _8 K( [& d# O- |
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 w$ X: L0 S- e, }" q0 ^
set l (l + 1)) q) P( e; H5 q3 ~8 |
]
0 B: Z6 `+ n% Q, w# pend
6 q& d$ y$ U( O
1 u* z9 h6 j4 G/ p' bto update-credibility-list
4 L2 @: j+ E# O+ B" R$ jlet i 0* h* }5 s3 {5 `, b' s$ U
while[i < people]3 [- b9 x/ ]9 L% y" n! a
[
: c7 g& f( N- C: B: \  Wlet j 0
, O: p+ T  |4 i. [9 D" Blet note 0
- ]7 E, B0 X* q) glet k 0
* n" N& ~4 ^  d# a$ O- U4 F;;
计作出过评价的邻居节点的数目
8 z# a8 u6 [- X- A) q- M# G9 A6 cwhile[j < people]
  m$ q( k6 u3 e) e6 s# ^; R0 U[
" U, a5 y0 e( H) Vif (item j( [credibility] of turtle (i + 1)) != -1)" K5 g* }, B5 b! q
;;
判断是否给本turtle的评价质量做出过评价的节点
* q5 ^% x$ _6 B[set note (note + item j ([credibility]of turtle (i + 1)))' a4 a0 p1 R9 y( h
;;*(exp (-(people - 2)))/(people - 2))]

9 y+ i$ q! }, ]- \; t8 y5 ^0 o' yset k (k + 1)
: B) v9 U* a( ?. K6 G- M6 }  p]4 T$ M# y4 u1 J: D/ ]
set j (j + 1)
+ v" x0 X" Z3 E]$ ?  B& ~# K3 y3 P9 I" o/ `
set note (note *(exp (- (1 / k)))/ k)# D# |5 O$ _; g$ l/ h; f7 c, C
set credibility-list (replace-item i credibility-list note)
8 R: S# V, R# bset i (i + 1)
$ W0 f" w( O" W. L! w3 _]7 c; L/ S1 \3 ?+ x2 O6 a
end
, _  F- q" U+ H) M4 m, S: k  E
* i* F5 n8 S" ~& p0 t# Y/ bto update-global-reputation-list4 \+ P4 i1 n% L1 \
let j 05 e8 E1 y) V! I' D# {9 q3 @) Z: |( d. I
while[j < people]
6 m) k4 ?1 J2 k/ D' |; k$ Q[
" d) b7 V5 o/ ~( ?4 q1 dlet new 0' m, ^; G& s2 h3 g
;;
暂存新的一个全局声誉7 X7 n. j+ L6 m) j7 R$ A' U9 Z
let i 0
% {9 n% V% e( u  Clet sum-money 09 B" f1 X- R5 F0 R8 y
let credibility-money 0
1 k5 B7 z: f/ {- u* c4 y7 N8 qwhile [i < people]- E9 ?  j( i7 ^
[1 g0 Y" c3 d& q) ]5 B3 Y: M! d
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 T& ]* z/ l, `$ \' L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- @8 [8 h3 ~1 ^- M% P7 w1 i/ J* ~! s* dset i (i + 1)9 a* M/ ]8 R1 a& e
]
$ O! L0 A7 ~8 tlet k 0
$ N) C0 b4 A0 C+ _- v" S( j1 a8 _4 `let new1 0  I3 g7 _7 S9 a2 q+ r' F
while [k < people]
; O, z9 _) o2 u  v8 K[7 C8 `4 B' H( \/ J. }
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)
$ P$ C5 J( p4 gset k (k + 1)
) L' I) C' p1 ?* K+ A( K]3 C6 d7 w) T! V# E. n4 @1 }, r* z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   C$ c7 @( R: w. K' ?7 I2 w/ Q
set global-reputation-list (replace-item j global-reputation-list new)$ O. n; o5 [- ?' }- c; L& P% ]
set j (j + 1)
: R6 f$ ]0 U/ c/ H]
( G: E/ h/ I0 N- p9 Q7 Xend
9 [; x: _  C# T3 \/ z
: g+ E6 m- H, t( I
. e8 A9 R3 Y# S% V& n6 z
& t5 {! C! R4 Lto get-color: W9 {  o7 c$ P' w
& ~3 s) m/ h" t5 u2 n. L& _
set color blue
3 n4 A0 O1 m4 T1 L6 y
end( P" |3 a$ q, v1 T" s! R
: g7 i, f% f% D4 R. u5 }
to poll-class) m- C' J/ ~% r1 c
end
# D3 f2 h% j$ Q/ P/ a% {% X% M+ X% E! Q; n' \9 B7 |! _$ O. e
to setup-plot11 Q) i" a/ v" W. p: O+ S! v! i  |
5 \  E) Y, f/ d, `8 J3 M
set-current-plot "Trends-of-Local-reputation"
5 n( D  x" `  i' ~, @3 f
& V  _( V9 z# d( w2 z( R
set-plot-x-range 0 xmax
; G' Y5 C/ o8 o0 ^* U4 i
/ }& T- F) R8 r& S) |7 K2 ?
set-plot-y-range 0.0 ymax
  w9 ~# J5 g" u  J; K5 U" Y5 G  k
end
5 J. I* b, [9 P7 f6 l
7 P$ Z$ _2 k/ U2 E( d6 ~to setup-plot23 t! G0 f; y+ P0 n; v" ?

7 A( ?# k/ ]3 k, p) Pset-current-plot "Trends-of-global-reputation"
* D+ S9 H6 {7 L6 U# Z

' t5 r+ i( B2 Y# D2 V! I! J, Nset-plot-x-range 0 xmax
$ e3 j& u$ Y! e9 w; s

8 |" L8 ^, Y2 E8 i) uset-plot-y-range 0.0 ymax

9 ]. D  Y! |+ e3 e: y8 N/ k  mend, ^" {* |1 L8 C" U; \

. Y! ^& ^5 f- [to setup-plot3
: L, Z4 y2 Z2 A$ ^0 ?5 ~- V7 `7 y7 \$ w& i( t
set-current-plot "Trends-of-credibility"

6 Z. s& h+ U) L8 z8 Q5 Q
) V! Q" M2 c- rset-plot-x-range 0 xmax
8 c/ @/ H" g4 K& Q% i0 w2 A$ p

) P2 T# b( w9 L3 o; M* u# jset-plot-y-range 0.0 ymax
# F- x2 F$ n; z. g8 Q
end
) e! s& f& g* ?, K0 N8 u( O  z( C6 l
to do-plots
; |# j5 c( s- D& Eset-current-plot "Trends-of-Local-reputation"  Y8 k2 m4 o$ ~+ \! i
set-current-plot-pen "Honest service"
, d' {* j  `! r4 z; Rend
: P7 u0 o1 r  X# L# ?- I; N/ a# E, ^$ l" [' f- d' }
[ 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.
3 i( L& W  [8 c( G% D; t0 |+ y% m: C+ q% k
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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