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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:
5 v2 A2 P* p$ e( h8 J: e- q3 Zto do-business
* x0 |( r3 D, i' g) I rt random 360
. P8 y" c( Y0 t fd 1
# w& R" o0 m7 {0 a5 c$ z ifelse(other turtles-here != nobody)[1 {3 m& ?, s! H& t: f  U) y- ~: m
   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 q; L4 G: G) i! c( {9 |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 y, A3 ?: N1 v: g4 Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 s' l# L8 M" g; v/ i4 O   set [trade-record-one-len] of self length [trade-record-one] of self
5 i* F+ q" `# N! b% e* C   set trade-record-current( list (timer) (random money-upper-limit))+ _: [- d) H9 ]+ l2 k

) _8 W5 c$ w' T0 {: K5 ~. P0 x问题的提示如下:* e3 L1 N; ^# ?- X" h5 o
; E6 P. b  `1 v1 w' T- O1 g; b
error while turtle 50 running OF in procedure DO-BUSINESS$ E8 [3 y. `+ r2 O9 r, U
  called by procedure GO. |! g3 i. Y) y) t- o1 j" r5 i
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) Z6 ?6 [  R+ ?
(halted running of go)
8 N" ^. Z) C9 N8 @+ W* N; x0 G( p: {; e4 f1 m5 \0 h' `
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~~( p# p) m4 g* O' y6 v$ n7 L: R, Q9 B- 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) a) }7 K/ x2 H+ H; ?# b# J' }
globals[+ c6 b1 @- }- b5 X- F
xmax
" `; y- X: e# Eymax
1 V" U2 Z! a6 O& S% o; eglobal-reputation-list
: q& Z* t3 [: g: [
  `; m7 c) ~1 u$ E6 W; K9 E;;
每一个turtle的全局声誉都存在此LIST
# S$ |# N4 c+ L; |. n2 m. a% f7 ocredibility-list$ ^2 I4 N. W& d, B
;;
每一个turtle的评价可信度. `( V3 Q6 ?9 D7 q, b
honest-service. T$ ]0 M. c1 }* z
unhonest-service
2 {" L# n2 {0 |4 v$ Qoscillation4 X, N$ O: \7 p- L2 C1 F
rand-dynamic
& f& ?  y! v' c: r, `7 [) Q' w2 u]* `2 ^1 I+ x$ Y' R+ g5 N# h
+ x$ y7 K4 u  B: d
turtles-own[4 ]: T* T% O" t, ]  }$ w
trade-record-all
, p* ?$ Y  t4 y+ N1 u2 ?;;a list of lists,
trade-record-one组成; L2 S, I0 I! G) C  y( U$ _1 }
trade-record-one
9 d) X; y9 [8 a/ c;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" o- U' G, B7 N& f$ K

/ h( q( y1 q* I* X) p. X. D8 H! 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]]
# [6 u& R* f2 ^  p  s/ Y' U8 otrade-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]0 @4 y0 M$ y- z' t$ s
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
7 n+ _0 Z2 E6 `, ?neighbor-total8 O4 s3 X. |. Z/ C. F4 h6 h
;;
记录该turtle的邻居节点的数目
7 e( q7 z, s0 r. X7 otrade-time# M' S9 u7 I+ ?; v6 r8 v; A
;;
当前发生交易的turtle的交易时间  ~/ d/ J$ [5 A: l; x
appraise-give
: [+ i: v& D( {3 l: Z;;
当前发生交易时给出的评价
. w4 b6 Z8 I9 K. n1 H3 E+ Eappraise-receive
- n3 R/ o1 x- F;;
当前发生交易时收到的评价
8 K1 W$ D# T" z7 K: }appraise-time
8 L$ C% H- R# R' m4 Q;;
当前发生交易时的评价时间
. U6 m8 ~9 s2 y- C5 H# \local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 \6 F6 o" k% R# u$ a3 M
trade-times-total0 E) s9 F6 }# d5 \+ x. H, K
;;
与当前turtle的交易总次数! a% }# l( E( ?8 |* W/ u
trade-money-total2 Y- e* D$ D+ E% Q0 k( K2 v
;;
与当前turtle的交易总金额
9 p% g9 H, a$ U0 S, K( \local-reputation3 P$ {, S4 H  M2 j, p7 H
global-reputation' s. S4 x8 I0 B: H# v
credibility
6 `0 h1 `- A# q# K;;
评价可信度,每次交易后都需要更新
6 Y; V& c7 n/ z! ocredibility-all8 D7 X+ d& N3 d; N4 N
;;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6 u5 q) Y3 N  o, [/ @1 }. K/ o
8 D$ O: a1 k, n3 K) X( _3 y3 m5 ^( Y
;;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' C4 \5 u# l9 T  f, K
credibility-one
0 f. E& D3 [) S5 p8 m' Z' [;;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# h  o+ v7 t* j' ~' B
global-proportion
7 x1 _6 ]* U% wcustomer
2 S0 f. |5 Q; B* }" qcustomer-no
1 b8 Z$ Y( @8 m9 v: C: Ktrust-ok
) t3 [: W: t" Y6 Q1 Y6 v8 ftrade-record-one-len;;trade-record-one的长度* e1 e, f9 C/ V
]
) \4 G! g5 k- }  M, }7 J# ]  ]. O2 C2 g( l
;;setup procedure
- L5 ]1 M$ L3 n, @. T
. z2 B5 x! j9 ]+ n$ C* @3 ito setup/ v& s7 ^; i2 Z$ u9 L

5 Y) m  t9 y8 U' s& |ca
  {% h+ P0 j$ u# ^, S- q8 M' n. o+ F
, [1 K# G! t8 D' J
initialize-settings

/ i" C" u; C5 l0 u, p" F5 W3 `% w1 u" L0 R- \7 B
crt people [setup-turtles]
; p* S/ f0 M. v1 a) Z
! H% _! Y+ M. P9 E" k
reset-timer

* l4 L5 `& h( R) E# ?* W- T# v8 M" e& ?3 f$ _! o1 S) H: |/ p8 I% V6 A' z0 |
poll-class

* g/ |& V0 A- ?$ K" u# q+ Z( A, R3 t8 U: i5 N
setup-plots
: l1 ?4 q  q. r3 E+ v: P

" j0 n( w) l% r, r  h4 w$ {do-plots
5 S* {8 R+ W' V
end& s% @( }6 s7 V+ d' M4 W2 }; z

, n1 Z7 u, m5 D6 T1 W6 D" Qto initialize-settings  _# X4 A. K% {7 n* K: i

3 Q/ k) S2 f0 qset global-reputation-list []

5 g6 v* ~& m3 _0 D7 O/ h2 B5 b8 D5 s2 t( O& F& M0 t. d2 y# g' R
set credibility-list n-values people [0.5]

1 G0 N- ~4 l% l% s* m
/ X0 r  ^' j5 i; F  A" ^" eset honest-service 0
, a" x5 h* m# k
2 ^$ n: U" P8 j, P, Q, x/ f
set unhonest-service 0
; C, i$ R9 @; r* \% W  z
4 q+ t. d# M' v
set oscillation 0
+ A- p  U3 }% j7 a% N6 l
1 @  j) h$ Y; X; {
set rand-dynamic 0

% H! N* m7 J$ C- Y  ]9 {end$ g1 |6 M8 ~# |8 s  [( ]

1 \. c0 E6 ?, B( K  a/ xto setup-turtles
1 \' n* g2 m1 E$ E# C. m, v% Zset shape "person"1 ^1 j1 M7 W$ N1 A4 a: K
setxy random-xcor random-ycor4 j: i: ?% M5 }: P6 k
set trade-record-one []
) x' a+ g  m/ U7 j4 c; c4 M1 ^% t
3 w6 @' e0 l* I" M5 _7 ^. P& J
set trade-record-all n-values people [(list (? + 1) 0 0)]
) c3 r% V& e; N) T$ B$ c. A

2 }2 D' ]- p# r0 q- f/ E! ]set trade-record-current []
& p* y- h6 f5 {  Nset credibility-receive []
. B* O, J  c, Z; P2 Kset local-reputation 0.5
& W7 N2 e* w% C% Uset neighbor-total 0+ h4 g1 ]' ?8 W. R' i9 I
set trade-times-total 0
# f" I6 a& Q( p5 Q2 Iset trade-money-total 02 G' ~3 h+ e1 M8 u* ?. a/ s
set customer nobody
9 p2 P2 G  u. Qset credibility-all n-values people [creat-credibility]& l' |  G/ R! b$ w, c% T; {+ @
set credibility n-values people [-1]
, z1 N/ _8 n8 Q% m9 m: J6 Rget-color7 F: f% F. I& }$ a
, u. f. Y; K  M2 g, K: d: y6 i
end
5 w) N" H2 U4 O5 ^# H; O1 F4 T4 ~: Q4 `- y3 e+ h) h
to-report creat-credibility
/ v3 Q4 q) I6 f9 }) l% c- breport n-values people [0.5]
/ i) i* G1 p) O, oend* x8 \; h' n1 x8 n" `% H

8 O) S( s" X9 k* L7 y5 Hto setup-plots
; Z  q1 I$ ~- s
3 C0 D2 h' ~- `! u, Cset xmax 30

0 \  l3 |1 r7 L" d5 [
7 y) T2 L. w" u  |# W$ ^& }6 C( }set ymax 1.0
, n7 s' r4 a/ K4 c* d9 T' E

% F8 e, k; J, C4 A3 z% pclear-all-plots

! b* F' t7 V$ m7 G
* ^" m9 {  H  T) @4 i) z, P! a+ [setup-plot1
+ B* z) F$ S7 X7 B9 e( g

" R5 Y2 w% _. Z) h' k; gsetup-plot2
/ A4 p' y* K0 [2 T2 L9 k

" K  q" G9 x1 F, B6 v! o8 ^- Hsetup-plot3
. |5 K$ ?; V9 B: T/ @
end
% O0 A6 p2 u% B8 z$ O8 X6 n5 q+ `0 v7 l4 w. ?6 ?$ V, f1 v
;;run time procedures
: n; e+ b& m, V0 N/ R! S3 F- I* ]( k" }, h' r' j
to go
8 @6 i( L1 e9 d  s+ V0 y! N: T- ?/ E' |4 R1 q* m  \% U& z
ask turtles [do-business]

8 W7 v/ h8 u# q: ^4 w/ B! c6 xend
6 @* @- N. c0 x5 K5 ^( g* x  y  D0 p, C0 }) M2 Q
to do-business / `+ e8 i4 H8 e9 D1 Z

, P" s& a7 _5 `, A. _3 e1 q9 N& R2 c1 |2 a
rt random 360

2 q% T5 M5 i. k+ o4 N" N6 Q' p) D0 n0 u( Q; k
fd 1
: V% m# P5 |% C5 K# |' w  ?
1 @4 N4 u2 G* q% w( E, O
ifelse(other turtles-here != nobody)[
6 h- z9 ?0 H; M, h3 j2 C4 A

0 x, N' f* W: m1 z9 ?set customer one-of other turtles-here

  I: n9 d. l$ s' n; G) f' Z3 H0 S5 Q' k* I  b7 S
;; set [customer] of customer myself
4 A/ ?& i. Y( j& G5 z. T# |) Z/ S

" h; H5 h) x% H% Q) Q7 H3 _. _: I0 f% oset [trade-record-one] of self item (([who] of customer) - 1)
* ^! u& H7 u& E* C. Q4 w[trade-record-all]of self
2 |5 _! A# E1 k6 u, V$ A3 C% O8 i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 i: @- i0 P4 o$ Y+ ]  ~

  h* V, U! b' Y) F9 X' e$ Tset [trade-record-one] of customer item (([who] of self) - 1)
2 M) b- [; l- d) s* A3 x2 H! T7 C[trade-record-all]of customer
2 k& p' ^0 D; w+ P$ f9 h) J
& t% H+ I5 b+ x/ [) q0 U
set [trade-record-one-len] of self length [trade-record-one] of self
( Q: g* ^" z% G7 w2 p3 `% i

; s9 }8 c- T: [/ eset trade-record-current( list (timer) (random money-upper-limit))

7 R7 J& L* Q+ k$ r' V# ]
2 _( w4 K8 m" x6 rask self [do-trust]
9 r! j3 a! l8 s. y" {, R;;
先求ij的信任度
; B. W; Z  G* h. ]& Y) o2 a2 n- m( H6 V0 n8 x% p1 b6 B
if ([trust-ok] of self)
& K( w) H$ c0 W% x3 \6 P;;
根据ij的信任度来决定是否与j进行交易[
: m+ |2 {9 R: f: C( |7 lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" F8 B2 G2 \2 E% |% i! u" n5 [

3 s) c4 n* ?: Z+ R2 g$ z- N[

# M+ x6 Y$ ^# A+ A, t0 W& X& f2 w+ R
do-trade
' W, l; R( Z8 Q; E: M' _/ \
8 ~$ I3 u5 l9 G; }) _& R
update-credibility-ijl
# L0 P4 _0 Q  y( I4 Z
* o0 J1 t: a7 ~4 q- s8 C* q
update-credibility-list
! Z9 _! G  @7 B* d% s

! V) d* [* Q' x  A  c9 ~# ~3 D& j! P5 _/ u6 Z/ V
update-global-reputation-list

! d0 ~9 j1 U' v5 Z' ~; e; M* C! v! N( l% s+ U; p& M6 Q" V4 `, I
poll-class

2 V0 P4 F: h+ O% \
+ k  [1 x( n0 U# o) _get-color
0 r% }- g# m5 S9 `2 W5 E

' H, V  Q4 G/ _2 B1 K3 K; q0 ^]]
! |+ m; M: q  t/ P# v9 B; a
& q) q- O1 j6 O/ W;;
如果所得的信任度满足条件,则进行交易
5 ^2 B  e! H- d( v
9 j# a) y* D9 k9 @- K# D[
  {! e4 ^" g. l* j/ t
1 f+ d7 e5 O8 T
rt random 360
" d% Q; K0 ~( L2 v3 q' {

! @" W7 u9 U" Q* @& ]; jfd 1
# k/ D3 `: J, E0 T; }

0 Y/ M6 [- [( ?+ \3 d! |]
. @! @6 d8 _7 w- Z  C

2 S7 d2 g  w  `" P5 C5 @# t) send
* e: z( A4 f6 @  P

) R# Q7 `8 l+ X9 l8 }& g3 D0 Tto do-trust - U/ s% V9 u* {4 B$ r8 w
set trust-ok False1 k0 C7 E  K$ s# L, y0 w5 l" f, X, h

3 [( `1 D. U6 n

. y" `1 i0 y2 C0 x& V- m: K$ wlet max-trade-times 0
% X& V( Q' N, C6 e& pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ N6 g4 P0 ~/ r) W, h# c6 U# Jlet max-trade-money 0
" `0 e- O! ?$ e- R3 jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- F4 ~+ B  B" O5 M9 F* Q, wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 y, V- x! t2 P5 T/ d9 n
7 Y' H1 p4 z7 B4 v

% Y* p+ {* s3 S" R0 j' Hget-global-proportion
% K" j6 H* x0 R: `8 z; \let trust-value
& u# {- p9 P( y" j" f' ~- flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 c: |3 {* r$ `! J: |$ h9 Lif(trust-value > trade-trust-value)- A2 S8 }. L" L, s; q6 R
[set trust-ok true]: G+ z9 ~2 U- H% x, k9 f
end
0 V- D, ?9 \. N* K! Q/ n8 A9 Y& m6 g* a4 f
to get-global-proportion
0 v0 Z0 g8 l/ K) aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 _# e4 V/ j3 X" t9 ~[set global-proportion 0]/ G: t( ?+ M- I1 Q, f# I2 K' i
[let i 0: C9 s* c/ @& s0 \& }
let sum-money 0( Z2 l- w& ~" j1 q. X! F& I/ N
while[ i < people]% y+ M  o' m' K4 P4 V6 j
[+ \% `1 T. ^- Q' i! J- M
if( length (item i2 n: w% n; f( f, f7 L* h  \9 K& H1 b0 ^: u
[trade-record-all] of customer) > 3 )

* L* Q. d" b7 s# w: v/ V% J[# t& [' B" K' B  w! C
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  L0 q2 C. S0 I) b]0 L2 }+ E  O8 J2 K* q- N
]" h. C9 _- ^+ _' J8 t0 K& O
let j 0
/ I$ z) `3 l- @4 M2 t" rlet note 0
7 p2 e" q; q& v9 Z9 B/ v$ Ewhile[ j < people]( u& c6 m% p0 G
[
4 E1 s( }2 A7 s  a" s0 gif( length (item i
3 _$ M5 l. X' ?% [" P[trade-record-all] of customer) > 3 )
' d$ K* q  z$ {: G/ j4 W
[5 _* M  F0 b/ M" R9 U+ j
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ L; U. z% P" w3 d+ L/ @
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ ^5 J- F* G# D. y- e0 E
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ G, ?- F/ G; ^& X6 []
. R( W* Z' e' O, N0 e]/ f: d  z8 c/ s, {  _5 b; h* y3 H1 n
set global-proportion note; C. }9 U" i  @: v, `( B4 R
]
( T* A' n. z" {* }, F# Q6 Nend
% `1 B8 S; G4 {2 O5 S
# f: K/ H4 g) m9 D4 lto do-trade
& w" @& M* ^" f1 U  m' ~; R! l;;
这个过程实际上是给双方作出评价的过程
: x' M, ~' n" J# S# oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( Z1 {+ {% ?7 s& i- _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! k- {3 n5 ]: K9 J
set trade-record-current lput(timer) trade-record-current
9 v5 z2 h2 X9 _' l;;
评价时间
* Z. t% q8 d, b) n/ N* E& x' B1 N1 }ask myself [
8 @. L6 [+ H4 t" rupdate-local-reputation: A6 \% G& J2 @7 b
set trade-record-current lput([local-reputation] of myself) trade-record-current& Q  u- M; p% e% P& B. t9 y4 S& X" J
]3 N) C- t$ ?8 v' x' n' a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 g2 }  s9 A# ^; P+ n( E
;;
将此次交易的记录加入到trade-record-one
9 j$ \" x5 ~; B. o. V1 U, _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 ?& X, k0 {- B5 m8 O7 P
let note (item 2 trade-record-current )4 f  o9 v+ a1 S
set trade-record-current" D$ k' ~9 D0 O. P
(replace-item 2 trade-record-current (item 3 trade-record-current))
& ~, Z# E8 ]. s/ T6 y/ |
set trade-record-current
8 X" ^+ i7 ?3 g(replace-item 3 trade-record-current note)
. a/ j( r3 r5 _7 a* E) P3 U* J7 [3 m# g  P1 a# l  l/ J4 g
) v( Q4 {7 R2 v) |7 Z3 {
ask customer [
4 V, s) c& f( H, g4 A7 aupdate-local-reputation, Q; t2 q3 f9 W/ b# f+ W: |# C* k
set trade-record-current
" S$ q! x2 [2 a2 v3 x! C) T6 ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 w: u2 Z& |+ @4 Y- m8 j5 v]
1 k$ l4 p( E5 R# q) F# x+ G
& z# `8 x2 H/ K+ M% E
) b& ]# w+ A5 O& `% X7 [8 I! X) Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ c  X9 q9 A  a. M$ I: Q8 k

3 U# c/ o" j7 ^) j; i) _3 n) iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! l$ V+ d/ Q  h3 `6 c. N;;
将此次交易的记录加入到customertrade-record-all- e# X$ s' Y  ?9 J; x0 j: e
end
& ]  }2 l+ U/ n7 b) h5 }0 S
: _" C! W% ~- \8 ?( ato update-local-reputation& J2 ~$ E% N) A- d2 p3 }1 {0 u
set [trade-record-one-len] of myself length [trade-record-one] of myself0 [& v9 q  T, \: n
$ h$ X- ^, q; p% `6 @! q! n+ F
& c& S) J- \! x' K
;;if [trade-record-one-len] of myself > 3
; z: y6 N3 _. y' B9 u4 d
update-neighbor-total; G& e0 Q  u0 r; \
;;
更新邻居节点的数目,在此进行6 T1 q) E+ d' ]: H  B: c- R9 X$ D/ H
let i 3& Q- ?# k' w. J4 c; ~
let sum-time 0
) t0 _: T; p1 G) x; y) I( e, z/ i8 }; [while[i < [trade-record-one-len] of myself]3 t$ n% ~5 J3 P; Y' L5 S
[' N6 V' C, o1 u- |- f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ N/ \* ?" M5 z+ @, L
set i# R* v# c$ x" Z' H# y8 g- k+ p: W
( i + 1)

& M$ [1 q' {3 K' I& m4 w5 I/ F0 \]3 x2 M+ p8 L0 }
let j 3! t$ `; X% ]: n% }
let sum-money 0
$ ^5 o. {! i0 I0 dwhile[j < [trade-record-one-len] of myself]
! P2 }) }/ u( Q. I! L, Q0 `0 E[2 R7 K. P  E& z
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)
# ]8 K1 J/ k1 h4 d: d1 o# I+ wset j
: D6 x* ?$ t  V5 u1 Y" d9 K( j + 1)
$ `8 F# Z" i- C. b
]4 ^* N) f6 f6 S! {8 x3 ?
let k 3( E9 U' t3 X. z& G# f2 s7 t% t
let power 0
4 A" f1 L# `  D5 B, ]" `let local 0
$ r3 A+ T( D, p0 X3 Vwhile [k <[trade-record-one-len] of myself]3 F. F) L) B' ?( Q( P
[! L' R- r( G) K9 L- Y- w$ _4 a
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) ! O8 X$ H; Z# A. C% |0 J- B+ o9 ?  H
set k (k + 1)3 H( e/ }4 o6 c; L7 v
]
- \1 I2 c( i3 g" v- v. R6 Aset [local-reputation] of myself (local)
0 n, t: y- R: X5 x% yend% F8 D! m7 i  l. Z0 {! o3 G, E

$ p4 \1 E* T0 d0 ]: |* Z( lto update-neighbor-total
* f, [1 W& v6 E/ P/ a
" g! E' s6 a2 s7 l! [, {4 l6 j' x$ tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% V$ S2 c! @! }8 D
; P3 V+ a2 z& r4 s, u# H. K% y
1 C/ [: d; S! H& w# m+ F( v
end9 K6 i, {- U4 O- S
0 G" m2 o! g( i7 S' G& o6 y
to update-credibility-ijl
1 l3 L4 S4 Y0 O7 Z; U) c8 l& i! h- f2 \" h- ~' q5 [, m
;;
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。+ U! l5 m8 H2 x
let l 0
7 B% d; f! b2 O4 T/ s+ Awhile[ l < people ]1 R2 ^1 J/ _1 ?
;;
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8 D6 h  M) W" u$ u: t
[
& k3 I2 \0 m9 R) y% H3 Llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 e7 O% y! A9 ~: A: i' \
if (trade-record-one-j-l-len > 3)
, R6 C2 j, |" Z1 h! q, w[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
; y* c* c! j6 f1 K2 _  u3 Y' jlet i 3
% ^3 Q  j0 e7 O2 Y# m/ ~let sum-time 0
* ^/ [" o5 V" |; p* P$ ]" x1 ?while[i < trade-record-one-len]
, S& J/ K! I! J' G+ J" b[; y7 m% M; o0 o, p- ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 C' x1 A8 M2 B  v% |1 p. \; sset i, Y0 Z' c: [( o: @9 M$ i% i$ ?
( i + 1)

7 t. o) _6 x6 D8 a]2 Y* n( L7 z# T/ a& @  o
let credibility-i-j-l 0
* ~* U; `6 P, r: Y$ |& [3 H;;i
评价(jjl的评价)
9 ~# o8 J! m5 S; a8 z. }5 |let j 3
6 S: X8 ?( |+ C, [+ V2 ]8 C4 s: elet k 4
8 W# q. S7 r. p5 }$ f/ y* Swhile[j < trade-record-one-len]! H0 M% p6 @) ?% D
[
. v' A) b& t7 K- x+ K# ]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8 y$ j% p0 A# I: o
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)
; F0 b1 Q0 F0 C) A$ lset j
' u3 |4 U- F  V8 K0 r' \4 A( j + 1)

  W( l6 i& `. x. h3 p' a4 w]
9 T3 x! k8 X) \7 C3 eset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))5 T' l6 H* d: U& r! Z1 E+ k
: X/ M* p+ g  h6 C4 ^; f; ]7 u

5 W, B6 \2 y# x) W1 L. M$ xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( m8 W$ l& O& `;;
及时更新il的评价质量的评价
% O& x. D- E% a, G& Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; b, O1 s7 w  Hset l (l + 1)" _1 o" N/ u: H* U! ]( \* z
]
4 V( {" T. H5 X  R* C# ^end6 J  C! w/ I* w5 U) w2 R; l
9 B$ e$ M0 V3 s" Q: \5 d
to update-credibility-list* `$ T1 C$ @3 K* g
let i 0) e0 I$ n$ q4 t* L4 D
while[i < people]" b9 x/ d  r6 l6 i% `  J
[
0 c6 h0 P8 u7 @( U  e' z- h) Blet j 09 I9 C7 q& S+ S- ~4 Y
let note 0' ?( Y: ?  }0 F2 f
let k 0
8 P$ W( H# Z+ p% F$ e% g; O- J;;
计作出过评价的邻居节点的数目. e/ \- D8 _. b
while[j < people]
/ K) g# b) Q- d4 V[
* Y6 a+ |- M5 w2 o  J7 j( |' J8 dif (item j( [credibility] of turtle (i + 1)) != -1)
  \' w/ P  c/ n- O0 ~4 X;;
判断是否给本turtle的评价质量做出过评价的节点  y& p, Y: f% l0 S9 }
[set note (note + item j ([credibility]of turtle (i + 1)))
; F5 F. U; W: d. u5 F;;*(exp (-(people - 2)))/(people - 2))]
. {+ f% P, A% U4 v' c5 T
set k (k + 1)
, [  ?, m0 i9 n" A: v]
% |; l, E  @" H. J. D: pset j (j + 1)( w. k4 C3 ]; e3 Q8 w5 c5 d  @- k
]1 E7 ]: N! F' A( B7 u; _" t$ p
set note (note *(exp (- (1 / k)))/ k)
. b- _6 o% Y9 Q* p1 p6 Nset credibility-list (replace-item i credibility-list note)3 F0 j3 f' X- E, ?/ I4 k5 d
set i (i + 1)
* c& ~/ x/ s- `# @( u2 \0 M6 v, []8 [' A" n0 j& A: K  N- h
end" E5 r% k. e4 r/ L

5 Q+ g/ N) Z1 O) ^3 Q: cto update-global-reputation-list
% I3 o, m/ {5 x$ K: d3 Y" tlet j 0* d' @2 N7 M, E# ]. l
while[j < people]
; t/ b0 d: T7 Q0 D) z# k8 c[
1 I2 g1 N7 s; p- ulet new 0
7 u; e. T1 c/ E2 X;;
暂存新的一个全局声誉+ I8 V1 T2 X# [( ]9 W' }7 c
let i 01 C# u5 D+ H. }) s+ X& C
let sum-money 08 C/ z) c! v* Y' L1 n3 R8 N
let credibility-money 0
8 |/ \/ x+ p: `4 b. B. vwhile [i < people]
+ S! S( D# b: r/ L; g, m5 u* U1 ~[3 J) G( ~& \" D8 Y/ v  p
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 a5 C. X' C; X/ S5 [! R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' h8 q: g6 l) _( J
set i (i + 1)0 _1 l0 r( j3 r- V3 w
]: }: m6 q$ r' [! B4 y; I
let k 0
' R. y# |# `6 nlet new1 0  E! u% c3 ~8 Q0 F: X7 C
while [k < people]
0 v' j4 t5 k% r) G6 o$ P8 E; V# @[
/ p$ C. ~. Z' ]! n. hset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
! f+ @+ }9 n8 A/ hset k (k + 1)5 @, p$ n1 P' \, |. a2 k
]. l$ Z4 [; j9 ]
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' |; [! G$ e, u8 n  ~( K$ tset global-reputation-list (replace-item j global-reputation-list new)
) Y0 p! r5 j) i$ Y& D, P8 jset j (j + 1)8 J  S- R, E3 ~0 ^6 @
]
, r5 o6 H5 s; Dend( m$ r: a# X# I( l- }* @3 e

. A0 t5 T7 X8 s0 K9 a8 A# E& y% V$ S( x/ K; Z2 M
: c* W) ]7 V) @9 ^( L. P
to get-color
; S9 `' l0 Y; P' d
6 G  T; {; q+ y0 i) {set color blue
, r2 ~+ r+ z8 d% Y2 |1 J) K! d
end6 k5 w& _3 B% c. ~' Q" B) v  T' k

, A. B$ D2 x3 l. C- U+ m3 p) b: Lto poll-class2 ]$ }, \. L) u& q* w$ C6 Y& u
end
5 H6 @, N+ j0 K5 c) ^8 g5 T& m/ }
: T9 i2 _" t7 W: g# Lto setup-plot1- [8 u5 B0 _( f# K, D- c5 ]( p

% @, q6 M$ S3 v+ q1 P# tset-current-plot "Trends-of-Local-reputation"
. a1 r& Z* y. z6 n, n, S* U" @0 i6 z

1 K+ E  A# R) l! f) @- jset-plot-x-range 0 xmax
5 t  |( g5 y, M1 q
& p1 d, W+ v" g6 J9 a" d0 Z' v
set-plot-y-range 0.0 ymax
2 Y+ H. e9 d  |+ g2 Z
end
; W5 ~# A  q- |/ P- Z2 v, B: z6 b+ L: a4 |' h' ]$ H
to setup-plot2# l! z2 J! v/ b: `( l0 D7 b
0 t  V& Y2 c1 M4 A
set-current-plot "Trends-of-global-reputation"

; n9 |( `9 r. G2 d! n- E# ]1 S- h
, R" s! V; v2 B! L& r& Vset-plot-x-range 0 xmax
- S4 |& B, g& O3 `: Y5 e6 B

8 C/ e) h7 {( _8 I) X/ S( yset-plot-y-range 0.0 ymax

7 G6 g& @& r6 P# ]end
" W% B4 d- A: I% @) P6 k3 U: A
6 c9 h5 w5 e3 P/ `* ]8 G8 Y9 ^to setup-plot3' ?# L8 X% f/ Y9 p
6 E! `7 k# q7 n# x3 v0 m: ~
set-current-plot "Trends-of-credibility"

$ _! ~6 W* J' j  j- O; d, u6 h, q3 ^  @
set-plot-x-range 0 xmax
+ A' w: H! ]) G0 v$ m# V

. z6 u( u2 a, @! P" X/ Pset-plot-y-range 0.0 ymax

7 z+ e. |, D! `- J9 j, }end
1 O2 K/ Y9 O; X7 \0 `9 e3 [: S5 U+ N4 i0 u# B) m2 ]
to do-plots/ C3 ], Z2 s8 l3 W& f
set-current-plot "Trends-of-Local-reputation"
/ k0 v( Q* `2 zset-current-plot-pen "Honest service"3 Q5 E% a+ t9 u  |/ R
end
* v8 c- I( ]3 _" A0 h; d/ l% S3 {6 p' J2 x- o; a% E1 q6 c
[ 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.. M) i9 G) D8 y+ q5 \# s1 K
9 \& x- W, S8 {7 U
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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