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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:
/ W. y* Q! i3 |5 j! Zto do-business # ^% O" h* C( x9 [
rt random 360
: t' x, K3 p8 p' m! U. D1 L fd 1
4 z, _. j) c: k6 w- F7 k0 q. L) | ifelse(other turtles-here != nobody)[) \) T2 s+ y; l3 h2 N1 ^% C
   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.. a5 z( R# X5 r: o7 z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. N; ^7 R1 S% Y0 G. c  u; F* J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 R" J2 [/ ]" n5 ~# H6 |, G   set [trade-record-one-len] of self length [trade-record-one] of self% k" q  N  T! a
   set trade-record-current( list (timer) (random money-upper-limit))
/ F: c5 ?+ F: B% j  o6 w; G& n8 v
. P7 {/ ~& R3 g8 i' G$ @+ }8 M问题的提示如下:: ~4 V4 o( f) }% [; m" D; ]

0 A8 h0 B- i, n& i: H+ v; ^error while turtle 50 running OF in procedure DO-BUSINESS( J3 z' _$ Y- G2 }; Q1 ]' d
  called by procedure GO$ H  y: J2 E" B. `. Z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; I7 g# \/ [3 H: i- b
(halted running of go)
, O! D; v: o' j( ^3 q( |& J9 Q1 D, ]4 E+ U
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~~
) a* h3 o3 G; ?4 y1 P) S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0 @* K- }% P. `2 `* x* d- G
globals[
1 o2 [  ]% T6 }9 [9 J- @xmax
# `3 w4 d8 S* n5 l8 o: jymax1 S- c2 P9 {3 L/ S5 N  r
global-reputation-list
$ z( [: V0 i7 C9 |$ q
6 j7 e0 E3 g+ K4 J" b;;
每一个turtle的全局声誉都存在此LIST
% C$ i0 \$ B! _' B" e8 C0 Ccredibility-list
- Z: I; G6 F# t5 ]; O;;
每一个turtle的评价可信度
4 x2 E: f! m4 ]( f) ~4 r) \; thonest-service
; V0 @- P; Z; G' Iunhonest-service
0 J& ?6 W5 O$ H# s' xoscillation3 l+ I. Z7 Z- G& M
rand-dynamic
( R; Q/ N8 D" i: T5 I: K]4 F8 C' \, i/ b- {6 t! l+ |. n
5 V, |( u' K- D6 A( X4 m$ R
turtles-own[7 Z% @" e2 S# k* r3 g
trade-record-all
% V5 X9 [0 i3 T! K$ i* Z7 M2 E1 j;;a list of lists,
trade-record-one组成8 x8 r& `& k, b' C) F9 j* {2 g: x
trade-record-one
+ W% B9 m" v2 S/ p;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 |* _+ t8 {9 A6 E9 P9 a
7 X6 H& t9 J8 s' M. a, ^;;[
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]]7 [8 A  |7 O0 [' u0 t: d
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]
! f3 F& ^6 L1 k" Zcredibility-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
+ Y7 g" y! `2 _! Z2 Dneighbor-total
; a4 v% E2 r$ p1 g0 b: r;;
记录该turtle的邻居节点的数目4 W' l) Y* M4 p; [
trade-time
- a, Q" a) U! i8 b$ F) q* F;;
当前发生交易的turtle的交易时间$ @/ _$ A0 }/ P1 s
appraise-give
9 q% e: r) P4 w1 J2 j. G( i;;
当前发生交易时给出的评价
; f  C5 D9 l, p. m1 g9 kappraise-receive  ]8 X/ Q4 D5 K& s& |5 r- D& X0 A
;;
当前发生交易时收到的评价
6 g( C. L0 {; }/ C) uappraise-time
% E8 b6 \! \! C. j;;
当前发生交易时的评价时间
% o* m9 ~9 w  i( W  D$ e1 Tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉+ T/ \  Q2 \7 X
trade-times-total
, k$ ]3 \$ h9 w% l;;
与当前turtle的交易总次数! U. m4 p. n! S/ c
trade-money-total
% I& J1 o( a( G; }: g1 c8 J: F;;
与当前turtle的交易总金额
( y2 I+ X( X  c/ Q0 j/ Blocal-reputation% a' d% B" W9 [# N  H# ~3 z
global-reputation. K2 ~8 f: O1 j6 o! r9 M9 Y
credibility
5 b+ V+ {! z4 F# ]5 _. R, };;
评价可信度,每次交易后都需要更新. q9 ^* e4 v* e8 b; A: J3 I
credibility-all4 r2 `1 {: \3 I0 E+ W% v# G0 r
;;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
" ], {* t. Y- ^8 T( |3 s# ~+ e$ a' S+ p" f6 S
;;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* y7 L7 Y% c4 `3 n1 _6 o& K. V
credibility-one
$ N! Z6 G. I' a5 g9 S- ?- e;;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) A$ L4 B' P" z
global-proportion
  D& h( H, n* C+ c+ C/ z) a, Hcustomer
1 a( a1 n4 ~8 t9 r3 tcustomer-no/ W# N3 n# f+ N* e$ ]5 W
trust-ok8 Z) R2 @! \5 J6 k
trade-record-one-len;;trade-record-one的长度
& @2 m& n! F# V1 T9 X  f: S# y]. @# x- e- B( G- q

' c' H1 O0 D( R8 }% Q;;setup procedure! k  M: ~2 u! g. l1 x
7 v$ y* ^* z+ G) Q
to setup. t% d0 b' x  H5 W
; {, `& l1 d2 s
ca

% N4 M  [) g" c# K  T7 b. r7 j, z6 ~) n
initialize-settings
, e$ C8 ~$ C( f2 C1 Q% N$ Y9 l8 M
# `3 `! b4 E1 F9 g- j
crt people [setup-turtles]

5 O: K+ B2 F9 B" J  v+ e1 B4 Q4 e! G
reset-timer

. M+ I  V2 T. a, L9 t( V, }. Z" C; E: _, C7 N
poll-class

. C1 C' P6 \$ o$ ~. u9 P8 p! `$ c( v: @# `& \
setup-plots
" R4 X# t$ K1 @7 L+ {" K

. v8 q3 h: e& i( edo-plots
* P  h. Z! R& p( A) O9 f/ {
end! c' s7 J! ?* n" w% R0 i0 n
# {- t( B& [! z* Q  O5 d
to initialize-settings7 ?% ]( G0 ?: e/ v3 P2 k
( ]0 c  X# p6 ?8 ]7 ^: B
set global-reputation-list []
- D: x" e2 R+ }9 u6 e) ?1 K9 C

! g: R1 f: I. vset credibility-list n-values people [0.5]

# d4 H0 }) N3 A8 Q8 b" B! x: e+ }. |/ L2 X3 Z+ T, k; ?
set honest-service 0
" S% a! ?4 p7 I" B5 C

+ v* t" }/ O/ [% C9 c; p: R/ Bset unhonest-service 0

. U% L! d# Z+ S' T' u1 i, U
) M% o- b  `( Hset oscillation 0

2 L1 d! v! g5 m
$ U/ l1 J3 H* n" y) B/ w& y* cset rand-dynamic 0

1 x4 j  X& X! [4 Gend% D  I0 f9 C+ `/ o0 |7 X" `$ H
2 n6 ?5 i" k" q0 s; p+ q3 Z6 C1 w
to setup-turtles
/ R' w8 m1 R) P7 @+ G! ^set shape "person"
1 ~- F# ~8 C) U% csetxy random-xcor random-ycor* l: p: n7 T& d( G6 p0 y
set trade-record-one []
+ M5 M3 m6 @( P, J# X, ^# ^, }

+ f( r  o  x/ r& h; xset trade-record-all n-values people [(list (? + 1) 0 0)]
* `( C/ z1 D+ X2 K! ^. M
3 N. {2 c- R  T: Y
set trade-record-current []
+ X' Z# ~4 Y) F/ \, u6 oset credibility-receive []$ Q: L5 H- W! |3 o7 O
set local-reputation 0.5
0 I) F2 e  [# i/ ^- fset neighbor-total 0/ V9 f' m/ S% w) @8 `% A
set trade-times-total 0
9 t! ~3 J! i( ~7 a' Y7 a1 rset trade-money-total 0. S# i' v9 w: |# u  w' P5 {% e1 K
set customer nobody
! R& N+ i+ B5 u( Z  F4 Eset credibility-all n-values people [creat-credibility]9 I4 _$ L6 S  q: R
set credibility n-values people [-1]6 I/ }/ f4 a( X$ e1 `* t
get-color
0 T5 O: D" N' Z* X9 n2 v+ c+ ~: r
  M0 b$ B9 O2 U" o
end: A4 e4 E( E) r5 @: o; K; y

) R$ a1 p2 x1 J# C4 L; X! Tto-report creat-credibility
+ `% W) a" j8 ?8 R# @report n-values people [0.5]$ Q: p- m9 K' C1 B
end
8 }) c6 _$ W% b  M# D7 [: }" x9 Y# |9 d8 G
to setup-plots+ X- H- q; M5 _' }* L  w
" x# W9 L/ V* ^
set xmax 30
7 @0 s2 X4 l0 p

! A; [: `* f: r. G% w2 t6 Y& Zset ymax 1.0
) i  B) F; p, z2 R0 y* N" I# `
4 G! k$ f, i2 h
clear-all-plots
* g6 e! m3 q( |! q: G& j0 S

6 L3 H2 G: n. K0 Tsetup-plot1

( k+ X3 k4 i  v) o& {5 h6 d  x. {9 e
setup-plot2

# S' Z* Y8 s. o- }; N# r* h- I' w! D* ]
setup-plot3
0 ^( z5 S- L; G  v% v0 j  L
end5 o5 }$ c/ I: G
. O& ^! E6 Z+ i# J
;;run time procedures0 q! v/ k5 K! W/ l8 V2 V! H8 d
$ _* @* L3 S5 F' L  `
to go
* ?& ?( x: ~; v+ x3 Q  g! a
( p0 W$ E% N. W# A) e2 ]7 aask turtles [do-business]
& {% m" m8 Y9 _# u
end& f4 ~. i- B, }3 X: c
: h8 \% Q3 }! W8 I
to do-business
1 b0 ?  h1 K% `1 @- y

* i% D3 A$ K2 F; V3 O0 ~: p
( T/ R. O4 D, n8 H1 xrt random 360

: t6 h7 |1 k% L$ Z- e3 K5 p: P; J! v9 J% ~* K7 O
fd 1
& |6 ^2 `& E9 h2 q. D

1 x/ Z+ c* i: n0 {. A( mifelse(other turtles-here != nobody)[
8 U, K* D( H, L. u

: s$ X) a# H5 o* [5 Yset customer one-of other turtles-here
( F9 c, W. O. k$ G: E1 }

8 ^) ~, e# G& r& f8 j;; set [customer] of customer myself

# _( w5 i0 ^# H8 Q
( F/ o0 x8 z' _; s; Q/ y0 vset [trade-record-one] of self item (([who] of customer) - 1)
) p2 R. B9 f% x! A! j! `[trade-record-all]of self
/ \  ~4 }! Q, T& i. I. C; K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ ]% X  I- B+ Q6 w- ?8 h. h
( N7 F) L' ~/ @" Y' D
set [trade-record-one] of customer item (([who] of self) - 1)1 b" Z# q  D3 V$ \& \
[trade-record-all]of customer
6 B, A, }$ l5 M% i$ L9 w5 M  {

5 Q; P1 F/ p$ t, v. V: k# r# pset [trade-record-one-len] of self length [trade-record-one] of self

6 G0 M9 S9 L' u
) `( [0 S$ z, |. J; k2 Vset trade-record-current( list (timer) (random money-upper-limit))

8 v5 m! O/ @4 V: W
8 p6 I, ~) k  y  t  ^7 f  r4 aask self [do-trust]
' x' ?5 R: V2 X' K! D: Z. ];;
先求ij的信任度( S7 h5 b$ @8 r; w) d5 n" U: e

. `! d! v; d! a4 f+ W% H/ Gif ([trust-ok] of self)
& _; `7 i5 b* U& z;;
根据ij的信任度来决定是否与j进行交易[) F2 ~1 F0 B& x1 q& a5 n* `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 I- y  w: y" [/ a/ @4 ]  C
2 `+ O  Q1 |' A' m6 c0 K+ A
[

, O; L  Y, s- t& {1 s, {& W$ p; I6 s* e# e8 H% G8 Q) a
do-trade

3 C% ?) g, n+ r7 S' P! T6 ~4 C- O7 i8 O) a% d. f
update-credibility-ijl
) _# c5 |3 e  S( R. S

& ^% ^5 v( u% b9 Z2 xupdate-credibility-list* H6 m5 G. d  e! U& b% R

+ F2 U, X- x# T' |$ I' x$ n! O
1 l* s( G+ r# n; Y. S8 Iupdate-global-reputation-list
6 v* \- B/ q5 V+ H
$ S1 Z) a, x7 W
poll-class

- @6 y1 [- W0 b- Q& X) ^$ f  o
get-color

/ Y- p0 ?& a+ \/ j5 w
( w  M* k3 R/ u7 n+ c. j: @]]: v) d8 n3 o0 Q) b  K& ~0 O
6 t+ p- Y( [. o( k  I4 L
;;
如果所得的信任度满足条件,则进行交易+ ^% L0 [8 v/ {; p) Y

. [( K* J& l3 g. @8 K[

' S, b4 X) o- W* y$ k9 u, G- x' y4 \8 y+ V/ ?: Y7 z  r
rt random 360

4 X( ]) S- \( N! c# P7 `" i4 @# d& \( n
fd 1

: }& D2 Y6 W, s% `  p, ^; Z5 _7 Z8 v4 R, N+ G
]

$ l9 E* E, U+ U3 L
' u8 u5 G8 c5 _+ ?' b7 uend
: y! [( x' P5 w6 G: h

( D; w) {1 W! `  vto do-trust 7 V0 w4 k! f% g
set trust-ok False
9 c" v2 }% ], q5 E; T2 u0 B3 A/ _" y+ |0 |% t

4 A" J& Z0 D  j# Olet max-trade-times 0
; }) x4 [! Q8 U/ J% Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 [5 Q1 C! h+ j" v/ |- [( N/ o  jlet max-trade-money 01 i: V5 _8 t9 O/ ?* k( j6 N5 [  U
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. c- v8 \5 r+ @) R% ?" u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* g* s8 L$ X. N+ G" s

0 _6 D5 X: N2 }2 O

  Y8 O+ M& }. q7 Qget-global-proportion
: Y  D5 o* ~0 n" blet trust-value
, ]0 X; ?" h8 i+ v  Xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- D2 F3 O- \! A9 B- F
if(trust-value > trade-trust-value)
- H3 a) m& S; p: e8 k[set trust-ok true]
3 Z8 ?. s+ \+ O! nend
2 H9 d, Z* Z+ ^
- k0 d4 r; ?0 [$ }to get-global-proportion
5 I; U& D+ X1 t5 U6 W( v  G$ kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 J/ _! {4 g* W. ^: n$ w[set global-proportion 0]
, E7 j( F4 X9 h9 z" \[let i 0. F  C0 N  S! g1 u  U5 g1 W
let sum-money 0
( |* x4 @& q6 P8 w5 Y7 X+ k$ K9 d9 {8 nwhile[ i < people]
, J/ J/ ~1 N- e7 j  X) u4 a$ o[
# v- Q& `# @9 _4 V# P1 Pif( length (item i6 m! c) t6 g2 C7 k5 D  l' ^
[trade-record-all] of customer) > 3 )
% B$ R$ `( \1 [' C6 C; x& c! I- K: g9 O
[
( N' f) w7 n; b8 v& o6 b/ ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; x" x$ `+ \6 ~$ \/ T]
$ [! M4 C0 M' T1 I3 W6 X]
& w2 d; x! [, i# |' ^0 ^! g9 `let j 0
3 ~5 i2 r5 x- D3 o7 ?let note 0
5 q3 K% p* k6 H+ z: F5 {% }9 z, w3 ywhile[ j < people]
6 e4 F! V: K8 F; I$ j% `* {0 j, `[' E8 _8 U$ o! B) C" Z% L
if( length (item i
8 n; ]9 ?+ w+ ?, q; D[trade-record-all] of customer) > 3 )
# g& B( R( W" B9 M: F0 n9 ~
[
& K4 P. i, ?2 \3 h) i& E7 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 B) {* q! }5 i2 T[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% E5 d3 q: z7 ]. \/ F* C  f[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 F2 x6 U* |3 S
]
  m* s% K4 y9 J) U$ a]
+ ~$ Y9 Q; j$ M$ Z+ _) D0 \set global-proportion note& F; Y* u* L8 `$ o8 N
]8 T; u6 |  S" p% a
end
, H3 B7 h9 Q  X5 T4 Q4 {. T
7 W! Y7 _: P  M) W; @. d& Fto do-trade5 `: v; P1 {& B
;;
这个过程实际上是给双方作出评价的过程8 T! z2 M  d" f% w$ p7 {9 _& ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ F, n. n  ^# Y* A3 Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* f) }' i) y" k+ q0 x5 L" iset trade-record-current lput(timer) trade-record-current
$ L( q$ h# P. \8 U;;
评价时间1 F2 ~4 q% @; L/ _, ]7 f
ask myself [& u6 h$ E( @. F
update-local-reputation
. {" S, C$ G7 V- F8 Z$ s& g3 eset trade-record-current lput([local-reputation] of myself) trade-record-current/ c& k# a3 j, u* s9 Z* i* I
]
4 |2 I# r- g. \2 A3 f  _set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 f; f- o! R: W( ~7 K5 _: T* j
;;
将此次交易的记录加入到trade-record-one* v; v9 A" Y8 J' B6 @6 w" I
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% y! ?1 p- U% O  {( }2 {( q
let note (item 2 trade-record-current )
9 s# F* ]( k: ^6 \0 I; aset trade-record-current
% x3 W6 J* f+ U0 k(replace-item 2 trade-record-current (item 3 trade-record-current))
# v: b  g2 H1 b% F& o
set trade-record-current
! N+ _  b7 Q7 Q3 Z(replace-item 3 trade-record-current note)
& B" |% a7 X6 Z3 B  B7 X$ G) ~+ o: u; I+ U7 M3 h
6 e) [& ?; O/ Z; b  V% [$ Z, p
ask customer [6 {! u! e2 V- s" V0 n: M/ d
update-local-reputation
6 `6 u- G! d4 u* [* hset trade-record-current$ |" ]8 D( s$ T' z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 G9 q! ~7 z: U% ^) q6 h6 f]7 p- l! d4 A  {
) T* e2 r% ]6 i( u: ?5 Z' K6 F. |% b

' R# E; A, L9 X4 }1 L% k8 S; E6 Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 d7 l/ o( X1 e2 W+ x
# K/ N6 J% c/ t6 Q! ~' K
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' ~7 g- ^1 _# B0 P3 J
;;
将此次交易的记录加入到customertrade-record-all
6 V5 @8 e) _$ D9 tend
$ {8 O* ]3 Y/ a: W+ j1 I
/ X- h4 `# w, @! G2 U, tto update-local-reputation
+ w: X5 ?. s! J0 [set [trade-record-one-len] of myself length [trade-record-one] of myself
# s) l% D" C: o6 J! ]! [. U5 H
1 |5 [2 y! }7 ]' l3 ?
8 P' ^- [. S$ g- `+ m/ f8 p;;if [trade-record-one-len] of myself > 3

, s* ^9 W% F4 F1 Lupdate-neighbor-total+ l8 |! T) {' k. W
;;
更新邻居节点的数目,在此进行/ v. k, }; V7 Q' z/ i; E
let i 3
2 G% S% f. H9 Y, @+ qlet sum-time 0$ u; q+ N( A3 U0 q, h
while[i < [trade-record-one-len] of myself]
6 j! a! N# Z0 @" a/ ~- Y# A. E[% g7 X! ?* k. l4 b0 G0 q4 L  ]
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 p2 b8 Z0 V( S. t; [7 jset i
% I( ^9 `2 X! T- f4 ~( i + 1)

% y( A9 h! K1 H  x$ z# b]4 N; O) [3 J/ }  l; f
let j 3
7 a# `) m* O& [, W" |- {let sum-money 0( `  R  O! ^/ `6 y
while[j < [trade-record-one-len] of myself]
& e( ]$ }4 H, Y2 w  L) V* z5 S[9 d) z3 I/ f2 f
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 M& l, f/ z$ D8 u3 Y" ^7 D
set j$ g$ c  B& o8 x% G/ r" E6 l3 j% M$ t
( j + 1)

- b9 X+ D0 `( n5 [# w]3 z6 W# L% B+ P* t  E' Q
let k 3
( q% b/ \$ o" ~let power 0( x. t& l8 j  ~7 y
let local 0
5 [$ z( {  Y' g% k6 n) O( Awhile [k <[trade-record-one-len] of myself]
0 \- k- \2 M, L7 g3 n3 D$ D[
" e0 C, V/ p4 Q/ z( ^& T9 Hset 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) + p  i+ q3 S  S6 Z8 H+ V$ J/ X8 m
set k (k + 1)1 u: t# T/ d2 Q: m
]) k2 a2 z+ g2 |0 s+ B5 P
set [local-reputation] of myself (local)
/ }! M( Y7 t% G+ t- Z$ I( k7 wend
! s8 h3 k5 y0 C+ u- j, `8 ^
9 U) A+ x$ ^6 ]2 I+ F- p; kto update-neighbor-total# L4 ~- Y4 @( r" ^& U1 n
# H$ x8 Z$ j* g* Y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 ?+ N; i3 K% E1 L' j8 Q' [/ ~) v+ i( c

5 V% P- r/ c4 zend7 s5 w9 m- x1 O- ~5 J

  }' q8 l& Z  F2 g- Lto update-credibility-ijl
# Z1 u9 X$ Q% z" x4 S$ N7 M0 [# ^) C+ I: c7 B( p
;;
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。
$ n! F' _2 ]& v. ?let l 06 {8 H  o- X+ W: a% E/ o2 F
while[ l < people ]/ i2 `3 G9 I1 P5 G4 M6 K
;;
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
, L7 W# y8 j5 o9 G# f[7 l3 {" G) ~" E, z( u8 X9 U6 y$ e
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 e$ i7 a/ `4 L
if (trade-record-one-j-l-len > 3)& c6 ~- c, K& }" A5 o% Z+ B2 e
[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: Q0 f/ ^- H, N# A2 e$ @% ^
let i 3
8 b+ q+ I6 ^# P; Elet sum-time 0# i9 Q# M4 D) v1 o3 L
while[i < trade-record-one-len]
% L$ M& V. P$ M- x[3 f: d6 P: Y2 S# }' G" B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% P2 v! B. }: H2 ^
set i
0 P% a) ]3 V4 l' }" O# t, Z( i + 1)

; `% a$ i) z! f' t; J2 {]
) X0 q& x3 I, i( Blet credibility-i-j-l 0
. c  o0 E! t* ?" E6 Z* n! O% x3 {;;i
评价(jjl的评价)
4 {" g) p2 y, ?( U7 ~+ _, Z2 flet j 3
# W; H4 l# T; v, n  ^1 m" A  Q2 b$ B) Alet k 4
, X0 @1 w6 g1 n8 o% R+ Q/ Bwhile[j < trade-record-one-len]" V# o. E% ?4 Y2 f. ^
[' O( U5 Q% v/ q& u9 x
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
; w/ ^" `* c0 o: {, Fset 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): K# H' U' h& n" c
set j
. K0 F) R; [& S8 Q% ^( _+ j  ~$ z1 X( j + 1)

3 f$ e) o; I( d& i]% i6 R+ i6 G: ]% Y) {. I" q+ o; U
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 ))
1 P0 I& D. u& t& B/ c/ d! r( x: H0 P9 N1 ~

. i- h- C# `/ flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) C. c( m2 g& O
;;
及时更新il的评价质量的评价
2 }" [' A: O( ?7 }- D/ j7 Y3 wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 ]" K2 B5 F8 I( gset l (l + 1)* B1 W' ?, F$ H
]  O: g8 }' d" x, g4 y
end
* z- c+ n+ x, Z- h2 ^* q
: u1 h. D# n, i5 L  C7 ~0 C. rto update-credibility-list
& C4 }9 a0 t9 S' }# H" ?let i 0
( _3 f0 F7 S& l% J6 m0 Hwhile[i < people]
; l; V9 k2 n" a6 \2 ^' u[$ Y# r. x- ?; H  d7 E; ?' j
let j 0: y% J' R8 F" ?5 }7 x2 l& ^3 F
let note 0, Z8 ~) |1 y2 ~' ~( j
let k 01 u& u: l4 h4 f0 G7 d$ k5 ?
;;
计作出过评价的邻居节点的数目1 s7 u( B# g6 {( Y2 `
while[j < people]. W) c! Q% S% e' I7 ~- r( {" Q
[; \9 e3 i- G8 R8 K8 ]. T
if (item j( [credibility] of turtle (i + 1)) != -1)
  q7 `: `1 I+ A4 Y;;
判断是否给本turtle的评价质量做出过评价的节点6 {. _0 }2 t/ k  S! ?6 H( R* P
[set note (note + item j ([credibility]of turtle (i + 1)))' E3 Z; N8 }! B3 \
;;*(exp (-(people - 2)))/(people - 2))]
  {$ b; e2 Y. I# W
set k (k + 1)7 ]1 D$ O1 S7 X- l0 S5 t4 a1 U# T
]! J2 j" Z" L+ n1 v* U5 X
set j (j + 1)
/ u  l& Z0 x) N8 v" y]
5 q2 E2 A& F; O. a  N2 q" Aset note (note *(exp (- (1 / k)))/ k)
7 I6 a5 l; A; S! g) O$ l  P$ rset credibility-list (replace-item i credibility-list note)
+ [( P4 g" i3 ~. q8 h) O- vset i (i + 1)8 C& H" X6 k6 E) H9 s
]. N& l8 f9 n5 f( ]
end
5 _# t$ U: @4 y( @" [0 J! [. T% q( A* @& c. x' z- d
to update-global-reputation-list' }  C3 `' p* `, Z; w( m4 R
let j 0
$ r' R- B0 T+ q7 a. P# M9 O8 S. }while[j < people]
: y" z$ U& F* }& l0 H[
3 I( C8 y) e3 K9 @  ]- X! z* x0 G% Blet new 01 `% _$ h1 k- p; G2 X- h
;;
暂存新的一个全局声誉
7 G8 [" u/ x. r# @- d8 p- Nlet i 03 B; B  I2 K4 u, P
let sum-money 05 e5 S, K& S- v; p. q$ v: s
let credibility-money 07 a2 O1 H$ f/ S! b+ u. d
while [i < people]
9 }; _% [- I; K1 `/ O[1 v+ s( r* ^( a) x
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 N  l  \- v$ f+ e" ^6 [set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 h) r' l( w; p+ F3 U6 \
set i (i + 1)9 k+ k3 l  L! W$ B( {" k6 g
]
6 \; `$ |4 _0 o4 T$ T3 t5 Nlet k 0
) w/ X& v: p0 E, D3 o: Rlet new1 0) A# {, Z" d/ c& k9 l0 l, s
while [k < people]
2 P9 z9 W: _3 b. |; S[' |+ M4 B, L& {+ m, o$ q
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)
* W9 h! U, m( P: e- b; B  G5 h! cset k (k + 1)  U, _* p; z0 L
]3 }/ x; n# I9 ^8 h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " `- B  h! B1 a# _. M
set global-reputation-list (replace-item j global-reputation-list new)) F0 h: u8 l% i1 y/ X
set j (j + 1)
- x8 J1 G" A, I, c+ t; M% P: i  q]' D8 L/ c" O& s2 c  e# P9 `; f
end
/ [7 ~' T4 U! A: _! U- i9 e5 A2 m- B
8 Y$ p3 U8 M& C) n3 m- n( N9 }$ W; \. k6 n

8 j5 t* \& F  F  s" N& T( `& Qto get-color, u" g: C* a# g# Y( I+ Q
) T- o' {- d/ E# g
set color blue
( ^2 H5 c1 ]: @$ ~
end6 u* L1 }1 b- n% U
# I3 W! M3 k9 Q+ \! b2 d8 W
to poll-class9 w" f8 b8 ~" M3 m' u# s1 T6 X
end
+ t7 M' H: o7 [& |0 k8 ~* D; ~$ F* I4 q) e: E
to setup-plot1: M9 K8 h5 S. d- |
3 b  r9 W) S* y1 z- W
set-current-plot "Trends-of-Local-reputation"
  o! T+ L. y7 m! ^

* ~/ N+ A$ X; j& t! Aset-plot-x-range 0 xmax
5 @3 |6 G6 ]5 p$ R% [# f5 S
8 {$ Q! `: }' F
set-plot-y-range 0.0 ymax
8 e" k) U9 K. ~# C! |# J
end
  |+ M$ G8 ~! q( F7 v0 N9 ?* [/ Y% a/ z- Y
to setup-plot2
2 C) y1 k8 M/ e' O3 ?( x7 s
$ f0 b# P- s" q# |2 i7 Fset-current-plot "Trends-of-global-reputation"
& \- Z$ z* }" O7 X' y: F
; X7 N- ~- q. F) F0 k% }3 s5 B8 J
set-plot-x-range 0 xmax

' `/ x( J; F* M9 y9 e0 y" l( [$ U! r
set-plot-y-range 0.0 ymax

/ B& m! D8 k: Zend7 F+ h. c' C- o( G4 N; a) a
: V: \+ X4 P- J( E& \
to setup-plot3
% v4 P9 H3 J) Y  D6 a
0 O% L* [% Y* F1 u* gset-current-plot "Trends-of-credibility"
: z! h* I, _% \2 [( I# i6 n

% c# e3 ]% q, l0 fset-plot-x-range 0 xmax

2 V* Q# \, r+ Z( F
; `" ], ?+ _, f  }9 u+ B& y$ H/ Yset-plot-y-range 0.0 ymax
. _9 g9 m3 c& M+ a0 M+ ^7 i
end' ~/ C2 g5 b8 D, Z: t

. w! x' L) B# [# Z/ Hto do-plots
8 Z, p% |7 U, y6 T) Oset-current-plot "Trends-of-Local-reputation"
1 n5 D. u; ~/ s# x. t8 Rset-current-plot-pen "Honest service"
, I  d6 U$ F7 e/ n+ X; zend
+ g2 ^! ]8 I- {% C$ J  U
# F. a" h0 w9 T- ~( Q# l; g[ 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.) M6 H$ k+ ?; ~/ p
# z4 D1 ~" m1 x7 K1 \5 Y
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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