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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:6 c0 L$ \; b3 M  k; N. f8 A
to do-business : C- K$ @6 ]! H# r8 E
rt random 360
1 _, U: d# Q" W1 ^# z3 D fd 1
; K: {3 c  I; _2 j! H ifelse(other turtles-here != nobody)[
" [  G* ^- L3 g# @5 c; d   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.! o6 J0 I% S" a' o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% \( L/ F3 z( C( n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 c/ s1 ]7 X7 m& C" X( u   set [trade-record-one-len] of self length [trade-record-one] of self
3 v2 R/ O0 C* |7 {   set trade-record-current( list (timer) (random money-upper-limit))
, }. c7 v2 p& H! n; f9 S& l1 |: @3 W( Y( f+ S+ ^  h" i
问题的提示如下:
$ K9 a; B. x6 v* x+ z
- d8 K3 \: \! v( d% |error while turtle 50 running OF in procedure DO-BUSINESS
* e( ?& H  A- ?7 f" M& @5 L  called by procedure GO
1 M" r( `" b- Q. r  XOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 _$ N9 q; k2 n9 i+ H- K
(halted running of go)0 A3 P- K4 I4 F7 u& Y

9 V  J) y0 s/ c2 @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~~0 @) @& i- T( N2 {6 g7 z4 C+ ]
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. H+ b) ?  c' D2 @4 G
globals[# M- B: m! _$ j* m* d  H
xmax  m9 D  R3 U- Z  C; |0 u% D& |
ymax9 ~9 r* h+ ^8 u6 C1 D/ K- y
global-reputation-list+ l: M$ `  D; f* q4 E

# X! a  g& x! F0 `* {5 V2 P1 `;;
每一个turtle的全局声誉都存在此LIST
# R3 W5 s( I; G* b  lcredibility-list* n  u9 t& k4 z0 t& A* c+ {' S
;;
每一个turtle的评价可信度; F% t" w- h  W0 v$ C7 S
honest-service
# M: M3 d0 e% {! ?6 g: C* Nunhonest-service8 _3 a5 v* z! K  U8 H5 ?9 K6 V
oscillation
" D% {( A8 o$ r4 d4 erand-dynamic
5 }) ^7 O: \/ W5 d]$ O5 P. ?9 }. I  R( `. v' f

% g! l& W( U( P/ h, uturtles-own[- T, y2 l9 @) h+ L4 D* A1 `( e
trade-record-all) v3 b- p% i; ^# I" C2 ?
;;a list of lists,
trade-record-one组成
+ l! Q2 E5 i" F. U) }, H+ \trade-record-one
, l1 g9 m; a& @" \;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录4 E; j8 s% l  X2 a
3 c" \9 a+ M8 A! ~% V+ j
;;[
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]]- b8 l+ l' [  b/ c8 U% I
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], n9 z2 N0 z9 b1 ]
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list7 Z& I8 Y- l7 ?; R- E
neighbor-total
% P# W7 X/ G+ J;;
记录该turtle的邻居节点的数目, R. a7 w' I$ S& F. H- s% D
trade-time
- O3 l+ n" o5 b8 Q/ K/ C;;
当前发生交易的turtle的交易时间2 d5 S- }$ b* T; w; U- f
appraise-give2 p# R, K. u) g/ Q2 i& d
;;
当前发生交易时给出的评价
+ u- I7 S2 |$ R; [; a7 [5 y: Uappraise-receive
! z" z" _' Y7 T; U;;
当前发生交易时收到的评价
; J( Y& S" v4 ^% Qappraise-time6 c) B2 J; ]0 P# O; [& p* i" t; z
;;
当前发生交易时的评价时间
/ U* l2 `" Q& g' A# Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉& b: M2 L. ?6 M4 Q
trade-times-total$ L! T/ \7 Z( \
;;
与当前turtle的交易总次数, E  K& R! x- m
trade-money-total( ~& O- }5 p" t! H9 b3 R8 X
;;
与当前turtle的交易总金额
, V# H  I7 j% E: Q, ^local-reputation
/ Q/ }& T7 c- I3 [" C4 O. eglobal-reputation
, w8 @/ T7 C3 E- k$ P, Fcredibility
- F1 w6 s' t+ q0 `$ }1 T5 @;;
评价可信度,每次交易后都需要更新, y; u/ p" h$ F
credibility-all
8 k2 W3 M2 D7 E5 D;;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0 Z( ]+ Q: l' P3 b
/ u; L' \- }' e
;;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$ ]5 y, d0 N' E7 K) G) V3 F1 x: X6 u
credibility-one7 }* C( r0 P8 O) A1 s2 O7 s
;;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. y6 `' l2 _% c9 F
global-proportion. q" H  k7 b% l3 W% f! u
customer
& x* S/ f2 K; J" g' x; ncustomer-no' t- q! M) m7 r$ h4 {; x0 a
trust-ok
" i, P' m& `: Gtrade-record-one-len;;trade-record-one的长度4 C. s  G+ S; g! C  |1 U
]8 H/ g; {" |6 @2 {& Q
" m2 o) j4 b/ j7 @4 [
;;setup procedure" O* _4 p4 q1 p% }
. Y0 b1 J! j6 ~; j/ I
to setup, p6 j' E9 w0 T% {
* U  d7 {3 P9 a1 _# _
ca

$ t; U$ o9 \- m+ z+ B* t
4 I& b/ c% Y; c% ^# t% Xinitialize-settings

) o+ D/ L5 I$ a  b
* t( m, E  \( y0 W  J  fcrt people [setup-turtles]

( z2 k- n5 m/ {% Z
% h% v$ G! n8 n7 p: U* u* v7 ]+ Ireset-timer
! t/ i4 {4 [5 Y- g+ u8 P
+ x; g. g- T; {: a- f
poll-class
6 J* S* z6 E) g) \+ E" Q9 B/ b

1 P9 |' ]0 N. r; M- a+ x/ ~* bsetup-plots
8 c. S) Q0 Q( ]5 I9 i! K

+ O/ h3 n: T& Udo-plots

/ u* W5 e- [" W0 mend+ K* K1 i' o) Z/ l9 K( G3 |1 ~
% \! a9 b. m  U5 J. U# R9 |: Z: E. y
to initialize-settings
2 p5 s' m  G) b. i4 b2 v4 @
. V2 ?9 N- j* o( [, L/ q# uset global-reputation-list []

+ b. R) X& H% _0 x- n4 \* \! M2 d! q
set credibility-list n-values people [0.5]

3 g( B, z, |/ `7 ^( c: A* @
. Z$ v& u2 ]; P+ Vset honest-service 0

/ E# [+ j# q5 R7 L/ E& t7 {- P% W9 K) g
set unhonest-service 0

) P9 v+ n- \3 l
0 l/ J! Z  V* I" Q' H+ _0 Sset oscillation 0

; l) N: g* U6 b2 c
; T- i1 [! z, |% Z0 wset rand-dynamic 0
1 R& u: a  T/ n
end  g" r* X' d. o7 H2 P( l

2 m: ~: h8 i5 Yto setup-turtles ) A* k7 D' t2 {
set shape "person"% \# \0 ^! K/ x& i5 @  f* r
setxy random-xcor random-ycor
9 ?0 [; y) |5 R2 J) z$ u. F7 Eset trade-record-one []7 O3 {2 x7 e4 _  ~- x; v
! X- F7 c: ]$ i0 ]( ^' Z
set trade-record-all n-values people [(list (? + 1) 0 0)] & z% C) v) d& J$ [7 g

  e# m; t' E# Gset trade-record-current []7 G4 _# B) z' K- e: u' Z
set credibility-receive []$ @+ f1 m. Z  n0 \( |* ~- |2 B! d
set local-reputation 0.5; n2 \4 i% b/ {$ O1 E. t! R" b) o
set neighbor-total 0, T: d+ m6 ~9 d8 t2 K
set trade-times-total 03 |4 z( B* H! O3 ]
set trade-money-total 0
; {6 m/ b: R% yset customer nobody
# b* d3 q: M% ~set credibility-all n-values people [creat-credibility]
$ p- l& h3 O. r5 m% ]9 Eset credibility n-values people [-1]
$ m7 T% T. _6 w* ?get-color
" y  e' D$ i8 G! V( q# @  M
# V3 u1 L* [8 N3 A, r4 F/ ]
end) Z5 O6 ?0 M/ @  F9 U2 `0 z
1 z" V( u, \2 U# A
to-report creat-credibility# x1 l9 P3 R. P# [$ C1 d) b" e
report n-values people [0.5]0 r: e, t! ]. \/ _- _9 e
end
- j0 C- p2 k3 ~* ^& C8 X
1 _/ \. O' o% P5 N1 f, ~; Ito setup-plots
  j) ]5 m: v# [1 a- K" ]  n$ O5 I$ e0 j4 S" f
set xmax 30

. ]/ u/ V9 g; m/ S6 P0 D& k* E; S5 }* `# N7 X: y
set ymax 1.0

, e% w+ ?/ v3 h# b: |1 T% o& }: W# t: C4 M. `1 e& \3 w/ ]$ k
clear-all-plots
! i8 x; w% G: V* M2 M# H. o: i

' ], f% w0 j5 W3 r3 Ysetup-plot1
# i% c- D( N+ u9 b3 [! B6 S% ?
7 X2 n! ~* d' _0 e3 v3 B( \4 L
setup-plot2

$ V, K. _+ p$ u. r4 }8 J* J- j# I  [& ~' ~7 ?: R0 m: a
setup-plot3

7 y* L- r# e5 z: e% L2 Dend
0 r) h9 @5 [$ d2 N- z1 ]- E) ~9 i' W# {0 `
;;run time procedures* v- J1 x3 e4 [& H( G

6 V# w0 h; k/ [6 ]' Y2 ~to go
( @0 m1 j* ]0 y2 H% h# Y+ k# S0 b  I1 B  i/ K7 |4 |
ask turtles [do-business]
0 S7 F- Q/ O3 [' X
end
7 A* y* u7 }' D# F9 P- t3 h/ E) G  B1 d& n  [" t
to do-business ! o0 X% A* p9 M2 q% i
( u- ~7 A9 e9 H  d5 F
* l2 P/ I7 {: g/ k5 ^1 u% M/ z% p
rt random 360

% _1 I5 @% @3 K. x4 g
; V. I- ~/ o7 m5 ]- t- Vfd 1
! j: P6 m  Q: J+ Z

2 M8 `. y- @2 I. y4 I5 H: [  ^ifelse(other turtles-here != nobody)[
* n4 N7 Q; w7 P5 [/ n- }
+ ~( f, Y" H; G5 \0 |
set customer one-of other turtles-here
' Z+ L* {& c7 _8 b& ~( E3 v: B6 A

# I& [! e3 G8 r/ o  x+ _8 W;; set [customer] of customer myself
4 j* O# D4 U3 d6 w" C1 u

6 g$ l$ U* k+ K% h& F) }set [trade-record-one] of self item (([who] of customer) - 1)
  W5 u8 b0 U% q  E/ o[trade-record-all]of self; K/ I" `! [4 \% U' u, [; P" j
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# K0 E% P8 x9 g9 Z( _
% H( C% t3 Q! S/ E2 U0 Yset [trade-record-one] of customer item (([who] of self) - 1)
' M3 I" E4 J$ K* k* K& S2 X; t2 M[trade-record-all]of customer
* c1 @+ K8 U) u8 u# `: H

! ^. a+ q; K1 s# D4 T2 `set [trade-record-one-len] of self length [trade-record-one] of self

" r9 |* C$ w, p/ H9 \# p. p6 |5 _" {! g
set trade-record-current( list (timer) (random money-upper-limit))

3 D; J8 j) D* F! H  l( {
5 M7 k7 L& q' f3 h* f5 Q* m$ Kask self [do-trust]
  N; E$ a# T& w;;
先求ij的信任度
2 r4 c' r( X7 k% `- i$ h6 A' D; r/ Q* b, y7 H; C1 Z6 b
if ([trust-ok] of self)
0 l7 O' X5 s0 n" H2 l) }8 m;;
根据ij的信任度来决定是否与j进行交易[1 I! U2 b' L' C6 e
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* k; \4 I2 m0 g& b( O! ]4 Q- w: f
[

& q' h3 Q' V9 ]9 A) O+ E8 O) Z
9 O5 }3 v  I+ Y" S- W* K0 }do-trade

9 M  K- G* I2 E; Y6 n
& `7 G- F% l, G0 t0 T$ {& R$ ~/ F! ^update-credibility-ijl
: _9 I- W  `; s# j4 Q! U- o$ k/ }
% ]" A2 Z. t# L$ D
update-credibility-list7 r+ B9 ]0 @" t2 P/ |3 g
/ g  O4 t6 ]) y/ n

7 L, p6 S' u( W6 p, Lupdate-global-reputation-list
; m1 H- X% T( D6 \' y* J& s! k* N
8 ^- P; K8 y) j
poll-class
: q7 l1 I+ U! r1 [0 i$ x% [
# y/ L6 Y. ]* v
get-color

/ Q" m& D( {) @& T; z) I. U; Q/ @  H$ D9 w7 r
]]3 B0 r7 m# ~3 m2 d* S

+ X7 K1 v5 H. M;;
如果所得的信任度满足条件,则进行交易
) `/ q' `# G, H# _: v4 l. {
1 _  [, F, B. ~. l8 V, A9 @# v[
+ Z3 y5 j/ C: u  N0 d7 i
( K/ U, [# s9 k1 T
rt random 360
9 c1 v- {2 U  K" T9 Y6 n2 G& y* i
+ \8 f" `& g9 i3 v- y
fd 1

' ?9 U2 V9 T7 W; v. S+ q/ R2 t8 {3 n! W% t  h
]
. s8 [! b( P  u+ A

0 v( [, |' {1 {# l( f. Dend

+ s2 h% G" v/ n: b# h6 k
4 D0 d$ T, [) s* _1 \; Kto do-trust
" l9 Q4 ^5 i: D% _# R; H! ?set trust-ok False
) v- H% p# l; \! w4 C
) I+ P+ k6 v+ c4 I4 w

3 Q' h; h3 Z$ q5 f! o% Ulet max-trade-times 0; g4 @; D) V' S5 G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ X' ]1 @/ U6 N* u2 L# a6 plet max-trade-money 0* B* c3 Y* g/ f5 {
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. B. @3 c2 r% @6 E# c: c
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# ^- {' L" _9 f% f: |$ H6 q, l3 t# ~/ n, Q: m( g

) T) |$ p7 Q1 N9 X- i- r1 K& Z3 iget-global-proportion, C+ ^% Q$ V& O  n7 z7 _. G
let trust-value
* H' g* z) J( U- n" i$ Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- R. Q( g, d; t# {3 pif(trust-value > trade-trust-value)8 P0 V+ _, `6 K8 O; e
[set trust-ok true]& ]" S1 I; _( D  F, U# c4 L
end
: x4 o# i1 t' m  E: M1 b5 S8 E& G
to get-global-proportion* o" L* u& B( ~7 P
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" h- R: e& h! h/ s; t[set global-proportion 0]
0 E" N5 V- {+ b& o[let i 0
( L( E# V* j, ?! G' `& |$ ilet sum-money 0# X& E& _  a. ]6 q! y
while[ i < people]
& z; U  E& H  B  K[
8 F" }2 E5 r9 A" O3 Mif( length (item i
5 V! N* P9 e; ^[trade-record-all] of customer) > 3 )

* C! z0 m4 k7 M8 n' T) X! J[
# [0 N. ^6 n: H0 o! Y- w: Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 `2 B& O5 o) ~
]
$ W& e& {. p$ G4 W]
1 j8 N1 x' k( _2 y- \4 @let j 0
4 E6 U( y% J/ n+ B0 B3 b3 y5 alet note 0( ?* k) z0 g& S1 R# V9 y
while[ j < people], Q/ Y) K2 p) _" B
[- D9 [1 Q' o3 M$ z  `  T# X5 g' r
if( length (item i
6 ?5 G- _6 X8 {: Q[trade-record-all] of customer) > 3 )
+ c6 g5 J2 Z; q+ e
[1 p$ o, ^9 U) p  I: A" m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 j1 u# R) d$ s: t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" x% P/ A) A2 Z' ~! [' b9 U2 K[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 T$ r1 U! N9 p& }5 v$ `2 Z% Z) i3 S8 l
]  h7 M$ Z! ~! f0 ~0 A5 ?
]
6 D! t" |3 K) ~2 ~5 T" |  z! cset global-proportion note# B- [3 t1 E3 o6 J
]
3 ?* ?" e5 W8 tend, a" Q: U6 B6 t/ @

3 d; M; t" b& M' J3 N! bto do-trade/ S( i$ H( z; p. b, G
;;
这个过程实际上是给双方作出评价的过程
! O8 S( X4 G( ]0 t* bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
1 f. a: E6 E9 l& w0 ], Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& r) g2 s6 H# d, Z0 f! r( v
set trade-record-current lput(timer) trade-record-current5 s1 d7 A3 j. ~
;;
评价时间
7 ?1 s, x! E! O: _0 r; n7 fask myself [
5 T, m- \' B3 C; b7 j- W4 wupdate-local-reputation
# ?: [2 `+ ~' F- b' e, j+ Rset trade-record-current lput([local-reputation] of myself) trade-record-current
' N; R' R) R5 H$ p2 e]
! V! l1 U2 W& q0 Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 V$ k# d& S1 `/ o5 ~) p
;;
将此次交易的记录加入到trade-record-one
0 h  U+ f& m1 f8 lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 |. g8 F8 Z/ x8 J6 A% mlet note (item 2 trade-record-current )
  j2 ^/ T: D2 J% fset trade-record-current: `6 {) p# ~& D; S  v+ G0 I2 ]8 U
(replace-item 2 trade-record-current (item 3 trade-record-current))

* z; w! _/ j3 V: \! Zset trade-record-current
1 E. i  s9 v9 J  N) a: t/ W(replace-item 3 trade-record-current note)% o" i  ?1 H+ G/ g( i# I. @) D

7 T& C: H% [7 R2 o

' S9 b) S- v* `0 ?. t. Eask customer [; H: p5 [( u2 x0 W) y" q) x4 M
update-local-reputation! c/ ~$ _, ~6 M% e# X- q6 t6 e( C
set trade-record-current" m8 z) x6 s. a9 b7 e3 r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! m4 |$ W" N0 d; V]
) h/ G/ E3 `8 y4 F6 y! ~
* v) c; j* L$ p# Y; Z$ P
4 K1 b* _& b4 Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. i6 M0 N% B' q  p

; k7 T: c" R$ H6 _/ Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# r; U1 \+ Q) R$ R, g! L0 p: L
;;
将此次交易的记录加入到customertrade-record-all
) A. T# h' W( g! Pend4 f( z+ l' }4 k0 I" }( Z
# \. |6 @4 L+ B0 W: r' Y
to update-local-reputation
- g! U# h3 c5 `6 y  \3 Wset [trade-record-one-len] of myself length [trade-record-one] of myself
! e$ k; a1 Q6 G% w& Q5 w. w
1 u% A+ n' l3 I2 B
2 x: y: L" G0 ?) [! T4 z( {;;if [trade-record-one-len] of myself > 3

; j) }7 D5 n- z- Supdate-neighbor-total% O& ?5 B/ p6 t, ?- C' O. a5 o3 E
;;
更新邻居节点的数目,在此进行6 c% H7 F! M, \) r0 |
let i 3
# ~: `  q  @( X# s0 dlet sum-time 0+ A. {; @7 c* Y8 V  i5 x
while[i < [trade-record-one-len] of myself]% t9 N9 W' L' g: W2 k. O
[
% [4 @/ q( e# U8 |set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# x. I" Q, N2 Y5 V* q* w( k0 W) ?set i
4 Z% B, |/ C( r! {. a( i + 1)

: |+ R2 e9 t; B* I( I]
# j; m* }5 I: U% O8 Q& s0 z) Rlet j 3  v' }) g+ z2 G' e/ ]
let sum-money 0. X, z2 ~& L6 f7 X$ z) |& ^: c# w- Z
while[j < [trade-record-one-len] of myself]
( W2 N. S/ x6 ]0 @[- j8 b. n1 i. c6 W
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) U; c7 d! h0 A  A
set j$ }0 U5 Y6 _+ ]" H5 R
( j + 1)

1 ?. Z; J% q/ p$ }) L% ]9 @]6 \, U  p# [. v, i0 B+ I4 a, x
let k 32 z3 d0 C$ ]) L
let power 0
* S& L- v5 i( \9 u4 i1 y1 N1 _. jlet local 0
$ B; V' Z+ r' }7 u6 t) d2 G% b) m8 Iwhile [k <[trade-record-one-len] of myself]
8 i: A- i: l% _9 A* \  Y& V1 u- j[0 K% g2 D) J1 R
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)
6 c" R) d& m% m, s+ sset k (k + 1)
7 X, {2 A- ?) m& s]: s* p# a2 Z1 _* E
set [local-reputation] of myself (local)
& ~# O0 Z) P/ d: qend+ f/ n, C" k: ~  g# B9 a* ?

2 D0 v  X5 I5 m' K' z# d: s6 _to update-neighbor-total
% D8 I( A3 j# |+ C8 p! x2 K. @& J% U! q. F5 l3 A9 |' O; v9 I9 B
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- m; d$ R4 B# [* o9 N( z2 E9 @0 X  Y# d2 e' I2 }, k

/ A. m; d5 r/ Hend2 i( ?' I' I3 e( j; \( Q

2 e+ R& h) s4 U5 s! {! W- uto update-credibility-ijl 5 F3 K! J/ b5 a

5 s, k7 E1 q; q  t) E& ~6 `5 ?;;
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。
5 Q; I( J( }* Z6 l/ W1 E. A7 \4 Qlet l 0$ \+ k4 i0 b5 t( X. G' @5 |5 h
while[ l < people ]
3 ^8 w% Z9 H- T" c;;
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
" j. M) q2 t- B[3 \' x  j! L7 d% B+ H6 t6 W9 F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 b8 B' y7 Q+ qif (trade-record-one-j-l-len > 3)
8 L& {: E- _. ?" l( K[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
( b6 U6 {* \- g$ C7 {' B2 u& Klet i 3/ D9 w; @+ G, u0 z( z
let sum-time 0
& H# L  S% ~9 m5 m* uwhile[i < trade-record-one-len]& A! `: p/ M6 W
[
. U1 e5 U/ \/ X  \8 t4 hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( B3 `# M" I. h0 X3 l& N. g
set i$ X2 @6 e- z9 X$ e, u
( i + 1)
7 I' K( O: K& M" K: P6 c
]9 r, o2 N1 L- b; M
let credibility-i-j-l 0
4 V8 ^$ R: h/ w+ d7 ]) ^& {$ o;;i
评价(jjl的评价)
( j' `/ d6 @- J9 m* xlet j 3( a4 G/ W1 a5 M% T
let k 44 K( A7 l+ j# k/ ]( G, E
while[j < trade-record-one-len]3 r* E4 T2 x8 P0 b0 F; v
[
6 y4 R# q+ y, X5 Qwhile [((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
' M$ f+ J7 n( o. K" D/ }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 j1 z9 i. ~# h% g
set j4 J( V0 P/ b4 @: A
( j + 1)
! z5 R4 G% E- M: d
]
+ b0 [; o8 ?' R! [$ ~% \- X* mset [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 ))
( Y1 b: `  Q" d, I
3 m" ~  d" W. H+ K8 V9 j( h& Q
/ K) |# x" I2 ~. s% W& ]5 g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( L' A" V" A4 C8 c% k/ A5 Z/ m
;;
及时更新il的评价质量的评价/ d5 x5 _( n7 b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 C- J" `! c6 z% S7 e4 \4 @set l (l + 1)6 B9 A7 e; w: O/ n3 m- z
]
5 ?1 i0 O& T9 Y" [end4 G8 J/ Z2 w9 p+ m6 k

2 J' ~8 @; S& ato update-credibility-list& i3 p  X2 V6 T: a
let i 0/ `. P% ^2 y. G' G' ]3 k7 _
while[i < people]; n/ {3 Q1 b4 x$ D
[0 \# C/ E& m6 q& N' B
let j 0; h* m7 m$ G% v# L4 |
let note 0) M8 L  [$ F  |) i
let k 0' Y! l/ T/ }$ r3 q  |
;;
计作出过评价的邻居节点的数目
4 a2 [; Q, ?5 k9 I# ]: Lwhile[j < people]/ n3 j. b* J2 R, d7 O. ^
[
, x3 _% H8 i4 Z5 F% tif (item j( [credibility] of turtle (i + 1)) != -1)* k( x' V& O- d' J- S# J- b
;;
判断是否给本turtle的评价质量做出过评价的节点2 Q' P: S. M( }$ d" F
[set note (note + item j ([credibility]of turtle (i + 1)))
$ J( C! E9 F7 ]' s. c; H6 F;;*(exp (-(people - 2)))/(people - 2))]

. t; x6 {9 p' p9 eset k (k + 1)) C. C  r: T* r1 o+ j1 H/ p; T$ p/ ~
]& W# j' d" B! f5 p6 b% t7 E% d
set j (j + 1)
# o, ^; `, }7 J$ U2 c/ {3 P- X]7 V: p) n, M8 v5 L' G7 }8 I; g
set note (note *(exp (- (1 / k)))/ k)  q9 H! b+ U6 E3 z8 c5 _& w' m
set credibility-list (replace-item i credibility-list note)
7 e, T: X" v5 |8 E( zset i (i + 1)
/ B5 y4 t- s/ {/ y) G- F3 g]6 ]- z) {1 s, S" H
end* W  k+ v. R( e! X) Q8 Q' Z

/ Z2 \3 P/ B- K$ `" Q1 f# cto update-global-reputation-list6 Q* N6 w/ ~# `, ~
let j 0
- t; L2 J% Q' |1 ~6 ywhile[j < people]
  U; S' Z- x, Y8 s, k" W[! E  N& H. k% K9 a0 M! D, ~2 j0 B: G
let new 0
$ L+ c3 r0 `6 {  }; Q;;
暂存新的一个全局声誉
/ b" n" E. c3 A8 _8 Ilet i 01 \& l/ H+ ?% L2 q. j  U
let sum-money 0
" A# }. o0 U: V! B5 _let credibility-money 0
9 V6 u+ a1 Q" Z" |3 b4 |9 twhile [i < people]" i+ c  a- |0 D3 s+ f
[
  z1 v: m& c' X, `( c# u; ]- Pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# b! o- u* R( M
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 Q: ]2 F& z8 [4 {) j
set i (i + 1)0 V0 [) q' N% B; V/ A* h
]  j. d! l, X: e: o
let k 03 V  p2 B/ V; [
let new1 06 @# A7 l/ {0 t9 j
while [k < people]
* L$ G: v4 \3 R' N( x) w8 o# x[4 L. ?; s( ]( ^  h1 j4 m
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)9 `/ p" W0 ]; O' {) S, M+ b
set k (k + 1)
5 Y+ h" `$ L8 A3 i& D4 @/ G]
4 d7 ~. C! o: ^/ _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! o- P. U0 s, r. gset global-reputation-list (replace-item j global-reputation-list new)
% g( d6 u/ o/ _" F3 }- Lset j (j + 1)$ G& T  n7 E8 N
]
, _# m7 U' F% s& v7 Eend
  X# d% t1 i( X) J
+ R5 ?+ v/ L1 ~* h9 a' z, p6 v. d( q9 Q2 A: `  {) Z
; k2 \5 d3 y" p: K
to get-color5 S3 e7 ?  N* b  B9 r6 \. n2 O

" }5 i! q# x2 @) Bset color blue

6 N8 B, K+ H: jend) R/ K! o  d3 J9 ~" K

$ l+ F( ^! T- K; u" Wto poll-class
$ m+ K9 T+ y: ]& q# r: gend
5 i; n2 s* b* v7 w+ G$ t3 Y  c$ l  o5 M$ M. v. a+ L
to setup-plot1* X8 f& J: v- w% H. N0 z, S2 [
3 u  X2 h+ J# I4 {7 w) m
set-current-plot "Trends-of-Local-reputation"

2 n$ L' U, o+ d! m& I1 K
* B. m; D, Z! X* Y* ~2 Yset-plot-x-range 0 xmax
# R: C9 @  E8 S

9 v( J+ W$ X; Y( G' t3 i2 ^. Jset-plot-y-range 0.0 ymax

  m! I# d+ m- w4 Y0 Dend/ L% A( A$ n( r) F! S' ?3 i! ^

6 @5 n! a" l' ~# K) o. g7 Dto setup-plot23 R, Z, c. y, z0 i' Z: C6 R0 G7 ~6 t) ?

7 Q4 W  e  J: A, K( O- J6 u' kset-current-plot "Trends-of-global-reputation"
9 m1 B$ f4 p- V, e) w/ q( {
5 N) ^# l7 Y/ k. ^
set-plot-x-range 0 xmax
( R* x% i% s. W1 M$ ?% ^

! A! z! ~: B: K/ Z9 ]set-plot-y-range 0.0 ymax

9 ~4 T* D; I2 a5 o. K! Oend
6 r8 S. W6 f) w2 i. W( U
3 n2 I/ T. f7 U3 W  lto setup-plot3* a: k( j0 r& v  r8 {
( v$ n7 Q) a- F3 m9 v* G3 J" A
set-current-plot "Trends-of-credibility"
$ [1 l" W' N, y  g

1 M1 Q9 x2 ]0 c1 U- Y0 Tset-plot-x-range 0 xmax

5 f' j+ o  X$ V6 ?4 S( P, t% K6 O6 `- D; V( g
set-plot-y-range 0.0 ymax

+ y( I: z' p; V0 Y/ [end
" `2 I6 K' J2 U2 R! d$ k0 u( K5 u: f# r
to do-plots  X# |5 R7 i' i3 [2 v$ }
set-current-plot "Trends-of-Local-reputation"1 K, b1 s& f7 t" `( ^# j8 O
set-current-plot-pen "Honest service"
! @6 }$ U' C" ?$ e2 k4 yend
' A: @9 d9 }1 f5 n% e2 h4 t( d
1 H- }. g) a: B# q[ 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.4 {, ~9 e( b" |6 S! v$ u

1 R# J! ~# v4 A' B7 B' f9 B3 v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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