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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/ U4 l$ }3 s, t, T5 R  V
to do-business
0 F8 V! D. P* s rt random 360% ^# M8 z* k- j( d0 @2 E4 I5 b
fd 1# Z( N1 a$ v" n- z: E
ifelse(other turtles-here != nobody)[- P4 u* B1 Q& r& }9 f
   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.: b* D$ @  N9 F: r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; Y2 d; X0 w/ H0 M& `; m# }: [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" Z4 X. v- ~$ }' T
   set [trade-record-one-len] of self length [trade-record-one] of self
8 h, U" D* W# W   set trade-record-current( list (timer) (random money-upper-limit))
) {* `! g' U) S7 {. L  }& Z/ R# p& ]; \' t
问题的提示如下:
, C& \! S0 s* U
) j: i1 l* z+ V- f. oerror while turtle 50 running OF in procedure DO-BUSINESS) Y$ o3 G+ S; B& \5 r+ [( K
  called by procedure GO
7 ^/ D6 U7 F9 w$ c- c, I/ cOF expected input to be a turtle agentset or turtle but got NOBODY instead./ J! L  y, L" d% F' d8 ~& O5 B( w
(halted running of go)
9 ~1 K; A1 U6 ~* h  d% @0 u( x! B$ i
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; d" t2 `; l9 o: E8 t
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
5 o( A% F# [& q" p8 I  Aglobals[
0 p: W" `" Z% m$ J: Y* @xmax8 I! w% r" r! j9 i! W' [# F* ]
ymax
( b6 K  P* b! n0 Y4 L9 D. c4 t& Fglobal-reputation-list
0 u$ a) I4 o4 x& R3 h0 X' z
( T* S  y" e. _, S8 e;;
每一个turtle的全局声誉都存在此LIST
( f5 I- N/ r5 H+ Y$ Icredibility-list
" ~) e/ {3 a4 r4 O$ |;;
每一个turtle的评价可信度: W! R# J6 K* q8 f& \- x
honest-service$ D( H& O5 P! ]
unhonest-service) g4 Y( j4 h, x6 J' ^8 \& R' R
oscillation- \( g% \/ L2 \
rand-dynamic
% `" f* J4 {9 u1 o: z& h$ S% k3 M]7 G5 p- T( Q  Y

5 A/ T6 o/ I  y6 f+ @3 Z# r/ Sturtles-own[
' H" _& I1 J0 A# S$ Y) Wtrade-record-all
- f7 q5 G1 t& f8 f;;a list of lists,
trade-record-one组成( _0 Q- O" V) V9 f" q
trade-record-one) h3 U8 f$ \* J4 @# H" v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 [0 d( ?( P6 m$ l1 n6 Z# k

3 t( m' j+ ~6 Y( M6 k* D% H;;[
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]]
  q) W# p; B' @/ M: ytrade-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]
' S! _. Z& j, c. |! O8 Y7 [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
, T. f+ X# @' O5 |& l# Eneighbor-total
" L) h) o) h# L5 x6 Y$ f0 y;;
记录该turtle的邻居节点的数目
+ t# C* k+ z. m; E+ p7 `6 Qtrade-time, [; N/ t; Q6 B" \  @3 F8 i
;;
当前发生交易的turtle的交易时间
! A& Z) V2 S% C# h7 a4 |  ~appraise-give6 H- B- I6 q/ ^5 h. f
;;
当前发生交易时给出的评价
9 b+ m0 V2 p: d/ @" H* v; ]appraise-receive  K- q. r3 a- O6 Z
;;
当前发生交易时收到的评价- L! w/ B' x7 J4 p: k- h* w) Z$ r
appraise-time+ x- o9 e  ]) w/ q! y3 o" [
;;
当前发生交易时的评价时间+ E( y  b, L* k' Z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" J7 L3 D% l; h! p
trade-times-total
# b7 c  b! [# ^$ S;;
与当前turtle的交易总次数
$ @5 d% N8 f$ G" X7 Xtrade-money-total/ C& F$ _* \# w8 s1 Q! C+ _3 n
;;
与当前turtle的交易总金额. ]& g+ O% o! x$ O
local-reputation
2 ^  c3 k$ c. L' G6 W) kglobal-reputation1 C% _' {! y  p3 G' s. V
credibility! L/ h/ c4 d4 p1 t( _4 V
;;
评价可信度,每次交易后都需要更新
' k: z) m) w+ `0 R; x- Zcredibility-all
2 e$ p" r6 Z; L0 ^! f;;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1 c' _0 c3 o; R, m" O! N
4 E% j! `. n9 ^; H$ w: [
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
' Q, u* R: v" l( i6 e- p6 ucredibility-one1 I6 X4 y  i' D3 C
;;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+ A9 D6 {4 Q; j
global-proportion5 p7 }! ]2 T8 m% S9 H+ A' R. J
customer$ H$ T, y) D" m
customer-no5 l- Y! h7 U+ I( H
trust-ok* s1 j% j$ ]" \/ S
trade-record-one-len;;trade-record-one的长度
. a& k1 S5 n' _+ I8 w) Y& d]
) V! m" \/ l5 K  Y! [( R1 s" r4 l. r: y9 O) Z3 Q! x. ^
;;setup procedure
- w, S) E! X; V: {* H* k: ?9 y* P6 V$ }# n/ z# ?5 s7 P
to setup
* J1 Q2 G4 ^! u# r
) }- q3 J! d' b* u; Nca
+ Z6 `+ F9 Q1 E. E- I/ g' [% y( g
% _' ~" s! T& `; x' _0 J
initialize-settings

) p1 V- b1 n9 d8 G& I
& B4 Z; ~  j! g) x6 l% @* J- R0 H5 jcrt people [setup-turtles]
2 V4 G( l3 m8 n+ X" H( M
9 H/ `3 s% \/ j2 }, q
reset-timer
& r2 U  K  p6 q; r- ~7 j- T- O
% N' i  v) b- y/ p' N0 h: E
poll-class
3 J- J% ^  L7 S0 x4 i  _. A3 }

; o+ x3 F& K5 D. H9 P/ [0 N( ksetup-plots
+ q; ^% ~* u* P; k

) L9 A  W) O5 o- v6 |  @7 Q7 Bdo-plots

2 o9 G; N7 ^3 @% m# b6 nend) }0 n* m# K8 S

% O6 R$ s# ?. B& ?6 X) c* J$ s& Nto initialize-settings) z2 [2 r( }9 G4 M) G" L1 E
: V+ Z* A% i8 y9 u; a; d
set global-reputation-list []
3 z& W6 v# p/ g* d2 a3 A: [4 a# r

3 m3 \# H$ r7 U1 a$ ^  kset credibility-list n-values people [0.5]

- K8 k. n: J% l: h, h- N7 v- Y: C+ V
& h$ T1 N" o8 j+ E3 Y" h) ]5 ~set honest-service 0

* t, \+ Z6 {+ \6 x  q6 ?
* ?1 C5 f. l: G" `# ^2 r' d2 pset unhonest-service 0
; g1 f$ ~* ~7 j: B

* l5 b& V# K  o; dset oscillation 0
, _8 r1 e' `* P3 V

, B$ w) d) y0 m7 aset rand-dynamic 0

: v5 J' k2 G* \* E: U  Qend
# j4 E4 j3 {! a. }* I  R* D
5 x; u/ b4 Q% }2 |5 G5 n) Wto setup-turtles
2 _3 m- s6 N, S$ W9 `set shape "person"6 A2 I) l$ W  s/ [6 J  Z, B
setxy random-xcor random-ycor
; q; m1 Q4 [* ]set trade-record-one []$ d5 M' T8 L: y0 L- P6 b

* x3 k- G( t5 @/ Yset trade-record-all n-values people [(list (? + 1) 0 0)]
8 A5 L% O/ V6 k- M. y2 R5 v3 M

5 a# Q' q0 V6 y9 X$ T& ^) iset trade-record-current []
1 R; O* Y: ?+ J& X7 M/ h5 c; `set credibility-receive []
+ E/ A- B* f) Vset local-reputation 0.5
% Z% H8 Z3 |1 B) Zset neighbor-total 0
% f8 _- d2 N) }+ n6 Wset trade-times-total 0! Q- w$ O! U" o9 a) p; e  J
set trade-money-total 0
( B4 {0 {$ |* P% _8 D/ g! d9 t) D* hset customer nobody& z. |3 H7 l; ?% Y' f- q
set credibility-all n-values people [creat-credibility]
8 ?' Y4 h9 |' d5 pset credibility n-values people [-1]
; b' i) m5 ?4 [9 }) ^& ~) }get-color
- X& ~' U* ~) f% }% a. n7 V

# `" Z+ b! w( P: send$ w; Y/ f* |4 A% C2 l+ z) C

9 d* n' [0 Q1 Zto-report creat-credibility
8 g5 B1 R$ L( Z8 P; y. Oreport n-values people [0.5]
; |, w4 P8 w/ t2 M( iend
1 p4 G$ i  v9 J. w5 a  C/ n4 I1 f  f: K  Y- p
to setup-plots
) Q0 J3 b5 [8 M) q# s, A. a/ V0 y$ m$ w  ?- q
set xmax 30
1 Y+ \3 W4 l2 Q6 Y

' p+ M9 d7 C9 a5 l) d6 oset ymax 1.0

* _: h: }3 v' `7 ?
8 B( G9 f: M. ]* A9 mclear-all-plots

7 f! Z$ T6 y- _' `, |. q* `; A" t! [/ i1 a  L
setup-plot1

9 o& j1 j% L; U" V( Y# T. p/ ?; r  z8 X1 }; l& y1 R6 r
setup-plot2
2 Q8 }/ i# [& m3 ~

2 A1 k- x) Q3 T: esetup-plot3

$ ?% r( g. S0 uend
5 s- [1 Z3 z' u" O/ Q1 k5 ~8 q- a# L( T7 A5 z- L7 M
;;run time procedures
8 H7 a$ }( }( q8 u' `" }7 {- u# k5 x6 o% {8 V9 P
to go% o' D! L) A) o  K3 Q$ |

+ x4 n2 d4 D& y, Y4 ?* r! Kask turtles [do-business]
, b6 a, t% [$ H' M& Y
end, S* L0 D& x/ b/ E: w) f
2 I6 e0 o8 y& l% E2 _3 w$ H
to do-business 5 P% B1 }# P; w9 ]" {! y' L
" e; X2 X0 v$ k# x) I6 ?& n. c9 q

8 c% S4 `$ H; r. art random 360
  Q( @" {0 r3 b4 p- H

: q: g4 M4 }$ l: bfd 1

9 G/ J; a0 U5 {9 h. Z9 T6 ~. Z# n" e1 x) ~4 ?( [6 j  `$ a2 c
ifelse(other turtles-here != nobody)[
7 h4 p( U6 a2 r( w1 D; s* }3 D

7 a( A4 ?) {5 eset customer one-of other turtles-here
+ }" `$ {' A2 \
  f# W! u# X% H+ }
;; set [customer] of customer myself

- \+ ~9 o( Q+ O5 i* C: I# Q% Z4 J# s
set [trade-record-one] of self item (([who] of customer) - 1)
0 X+ [: ]9 z  h2 Q[trade-record-all]of self: A; S  `1 j) @
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! G: G( s# d5 i
% g9 W" l) Y% Tset [trade-record-one] of customer item (([who] of self) - 1)
0 |+ c; @0 e% U; o- a  t5 ^8 H[trade-record-all]of customer

2 S# n! I% A6 E, j1 p/ p
+ N0 ^% `' D& n6 F8 a1 Y4 `set [trade-record-one-len] of self length [trade-record-one] of self
" L8 X& l/ r* o
) z1 |1 v, A: o. o2 _
set trade-record-current( list (timer) (random money-upper-limit))
- A& U% B% c3 v, X7 e
: t* `. m+ \6 B# L
ask self [do-trust]
- K6 h6 S" u& f, T- M; d# M6 f;;
先求ij的信任度
: E6 D% h1 h0 g6 G9 t' i: Q  T$ s: u
if ([trust-ok] of self)
+ p1 b! c5 Y" }  n;;
根据ij的信任度来决定是否与j进行交易[
. ?4 h$ l' Z8 B# @9 Uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# N' Y& Y1 s% J9 w/ ^; |  p. f( t

  R  U; V5 H' W- p$ J& }8 s; S[

+ I# _& F9 r/ q8 X6 a! L* L8 K4 [; N
do-trade
& f6 k2 l* p* N7 M8 F
0 P9 k$ G) d6 ^% _0 M3 B7 @
update-credibility-ijl

! r7 \4 s2 {9 ^0 B: {- P5 t5 [" g
8 |2 t0 h& K$ ]9 T* _) vupdate-credibility-list$ _' U8 L& B) F. k7 q# n7 U

$ r# ]6 L4 K" l9 L# r/ v& G8 X4 @  t4 o( F
update-global-reputation-list

& I# w9 Z5 K+ H7 z
* i3 l" N1 [+ b; J* Wpoll-class

" R5 e0 r; k. Z4 Q4 a$ I2 M# w" \2 l8 p$ C3 a1 y( {" Q' y; O
get-color
; L) x7 K" {7 Z, i; C) P

2 O2 J5 A3 h7 Y2 O' Y]]# R: Z2 `/ B) v5 @- H" B

8 J8 `9 d* y+ d: W4 U;;
如果所得的信任度满足条件,则进行交易
" R# F, y& K) p$ ]/ w! R1 ~* F* o6 I" r* M. \+ t. _
[

; N% y9 d- ?! z8 {% w1 J" _; N! i. Q% \4 d
rt random 360
! J0 Z6 N4 [& f* N  A
0 t- u$ g3 b4 P# q, u! o) Q& R" d  y
fd 1
# t+ H% S% l. A, k  f1 W

1 `$ N. R. C; ^2 ^]

9 S; G* l# y& K! C. S; U0 m: G* B
, y" n% n, U, l! lend
+ A  `: U* ^2 p

" i& k0 k$ e, t$ Z) w; }3 O4 R( p. yto do-trust ' b7 c5 j- E  T
set trust-ok False7 A$ L) ], C8 W, v* H! z( s' K

1 D- s9 J& k* o' J. ?+ n& B( q) ?
* K& J9 K" C& D4 @+ H/ W
let max-trade-times 08 ?' ]% K( T$ b
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' X% V) P# v: Olet max-trade-money 04 ~0 \* s8 K9 h( k' \; P' M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: ?  F0 B# y2 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))
* B  B  s3 N3 F) f7 q+ I
( c4 X) ~4 c( @+ @

5 U9 z9 m% j1 K2 q' z7 S  D0 b0 Y% y+ Aget-global-proportion$ R$ ?5 }5 Y% U6 [* `5 t* O
let trust-value
/ a" V( Z$ R# O  k* 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)
3 W( ~1 |& l- H0 a. c1 m# U
if(trust-value > trade-trust-value)
( ]4 T/ R6 v: k4 I( u[set trust-ok true]4 h% m9 K, m. H3 l+ X6 u
end" T0 o. ^* H9 B( t; a  i, i/ V: L

# R; S2 T4 F# n& |* Rto get-global-proportion1 o" [# c8 E6 ~9 u8 c$ r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# L& y  d- ]; |8 g6 q- t" @/ Y3 X
[set global-proportion 0]
, g0 J8 b8 c. |# C9 i- q[let i 0
# [- N8 S0 G% a$ @+ n& P  G- Tlet sum-money 0
6 z  h1 `, F3 V& ?' twhile[ i < people]
2 t. e$ \0 V$ d[& |( W3 Z; Z  P6 k% P' ?6 D  [
if( length (item i
# |! |/ c+ g$ f+ x( l[trade-record-all] of customer) > 3 )

. m+ o: W, D' P. b. u2 F# [[
" n2 G2 R8 W. M0 t# R3 eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 q2 h5 e4 o4 o+ a
]# d+ ~( w  q7 O% o# u1 s1 d' F
]
7 n/ E: O( ?6 l$ ]% F" Alet j 0
8 c' @4 i& ~" n/ i! y2 [+ b+ Klet note 09 S( x3 d0 j+ F4 G3 l- q' g
while[ j < people]
1 _6 E, _' L9 f5 B[
6 H, @  s, \7 ]if( length (item i
, f1 q) o, ]$ G0 V+ c, |% Y[trade-record-all] of customer) > 3 )

: g: u6 k8 G# @; d) O[
5 j, D8 d& S% xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% C+ T4 Q  K2 t+ q* X% V, f% l. k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) ^' m9 `. f3 C9 N  u/ @' n
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! S$ Z( K3 O! [: ~! Y& l. U$ o]* I- R' P! ?; G" l( Y, r/ C! T0 X
]
0 m+ d4 }) d! l& O1 U5 S, m& e/ Bset global-proportion note5 m9 G& x4 M. y3 T, ?1 t# O
]
) C4 |  l: j- m5 m: c) b2 lend
+ T3 K# T7 r: U, v) d
8 V8 ]) A% L  Sto do-trade, T0 i$ }6 b- g. X6 k0 n
;;
这个过程实际上是给双方作出评价的过程8 M, K& ^5 Z" [3 ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 T' v! |- r, `" v/ r6 X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, a/ i( S* q" \, S" }6 yset trade-record-current lput(timer) trade-record-current- T( s9 W! f! o* `- p' z' ~7 Z
;;
评价时间
. N8 o* s3 ]6 `1 N$ a+ Sask myself [
9 I+ I1 D8 H1 k4 {5 ]4 x9 tupdate-local-reputation
! `% i6 u, h! a7 \set trade-record-current lput([local-reputation] of myself) trade-record-current* i/ k$ z. o9 g
]1 i& j( `4 {. V. d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: d, ~0 N( N- K8 ];;
将此次交易的记录加入到trade-record-one
+ i) r) k' q$ F0 i/ |4 xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: l2 V1 J% c9 N; Y* G6 `let note (item 2 trade-record-current )% }5 A9 Y1 _- P/ F7 T5 Q" Q
set trade-record-current: L( [/ f6 ^% `7 h
(replace-item 2 trade-record-current (item 3 trade-record-current))

, d  T7 u# H0 n" U; iset trade-record-current
, }4 {" ~! M6 D) p- U9 P$ a. I(replace-item 3 trade-record-current note)
0 o9 N% V! w2 V% S- J
) l# L9 }: X' u  x( O5 f, X% s. k
! z; ~5 b$ W" I9 `* [$ N% E% T
ask customer [
8 v5 n" T5 o9 U5 M! supdate-local-reputation, l8 U) A4 m+ l1 {+ x$ e  U2 w  h
set trade-record-current
# x, }! B% l7 Y) t/ S  @& ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 }3 }, L6 h, _$ w, O]
1 H2 r- g3 u5 R
* g  x6 N/ z% U9 `) v* Z
4 c) [( Y8 q6 ~0 N: M
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! U! T8 D+ X& R' E
/ t1 Y9 k; f; V% |8 G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) o, K! u0 Y1 m* n3 f) F" |
;;
将此次交易的记录加入到customertrade-record-all7 F4 y+ R* a" ^, _3 Z# j+ I; }4 ?
end
, A+ |& g9 @; }  c
9 `$ x8 K& m" |( `6 v3 lto update-local-reputation
. N) ]7 y/ T2 Uset [trade-record-one-len] of myself length [trade-record-one] of myself7 l1 ~0 \* q, e' T4 v4 J3 I1 ~
  c$ D- |# J* f: s: n3 V/ q7 q

+ F1 p6 {  m! _% c2 {;;if [trade-record-one-len] of myself > 3
/ h" a0 x" V; h& O0 y) M6 s. @: j
update-neighbor-total" e3 F3 d- ]) m$ B. r4 [
;;
更新邻居节点的数目,在此进行$ W3 ^  R' m; @$ r
let i 3  o) w% ^/ m- h7 ~! y0 k% \8 g* o
let sum-time 0- i* f6 u: _: l) D* B$ ^
while[i < [trade-record-one-len] of myself]
! e9 h! s0 R* Z5 ^$ L/ J[
- _9 v# Z5 w0 N: s" Z- [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 a, r$ K1 ]) x9 r' `set i
* e9 b# x. g* `( i + 1)

3 L' a" c5 b, s9 V2 ^]
; D! m% v: Y% q% q+ w! `6 O5 Flet j 3) U' L% _+ K6 O+ o/ n/ m7 }: s$ ?0 R
let sum-money 05 C0 ?" l: E2 \; x$ P, |$ o
while[j < [trade-record-one-len] of myself]
% K2 g( K4 n: L  z. d6 J" O7 E[! Q/ [7 @" |8 v/ z' 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)
' K; a! u1 A8 y9 Z. a3 }. Aset j
1 |8 q* M9 I/ l+ Y* z: }1 P( j + 1)
* @; i/ i7 ?+ |8 a
]
: O$ q/ X0 J* D. s. h' o; x4 Klet k 3
2 x, b& E: S1 N0 l) h- d* B( a) @let power 07 M( ]7 p" f: N5 o
let local 0
- j  A: j! o/ c. u- Awhile [k <[trade-record-one-len] of myself]& T4 l" T+ _1 T
[
* j. d: |8 z$ M! E1 l. Vset 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) ( l2 j: B) d8 R0 @1 `
set k (k + 1)) U  q+ Z. d' h4 g5 e- \6 n
]+ V: t$ U0 G9 C7 e! h8 w
set [local-reputation] of myself (local)
. C& A# H2 _; m( L3 Zend" f0 G/ y# ~/ I( J& B# G" z& w1 j
: t+ D1 i  z/ L; x: z- B
to update-neighbor-total. C" s" p* s: i

8 `* F7 H' c! x5 wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' R1 l- w- Y$ g( S- G6 [

' `9 f+ ~& W+ q0 }3 K

( g- [: k8 g8 D! H3 g5 vend
1 a5 p: o% E. \% \1 Q% d" l$ H. x
to update-credibility-ijl 3 m! B8 g6 T% K/ V& v

* v- i2 T5 v" r0 T9 r. W9 b* c: f;;
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。* z+ v) Q8 A- i9 t* M; k+ R$ \
let l 0' u, c+ b) b; ]& m+ K6 z% g
while[ l < people ]7 V/ T( a5 A0 d9 i. V
;;
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5 c) b8 o6 w" o2 Q
[  y/ R% n9 L' U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), J- B$ w! x7 z; a: p$ X
if (trade-record-one-j-l-len > 3)
6 O4 M1 t7 C$ I9 [. o7 c* m[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
, g; I0 j( d1 g7 D4 `) k+ olet i 30 {. v! _; Y! {9 `+ |- ?
let sum-time 0
1 R$ J3 j  a6 O  o9 m) Rwhile[i < trade-record-one-len]$ K0 a+ \1 \9 B& a2 X9 L' h& d
[
5 V+ i& n2 m' g1 w1 w# dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 S* B3 S6 w! ]3 vset i
( W$ s$ x0 C" W, G, A  i( i + 1)
4 }0 U& s/ @( H* a9 v% J
]
& S* X) n6 ^! Blet credibility-i-j-l 0
/ h; n" f. G0 h;;i
评价(jjl的评价)' k. T  b. d" [% A* ]& D$ E
let j 3
5 @8 H5 c8 [8 s$ }/ J6 U6 V, D) Wlet k 4
3 s  z8 A3 S$ n9 E0 ?2 A4 ~while[j < trade-record-one-len]3 S; X7 }2 Q  W! Z; g
[' F4 F1 G% {. A, _
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3 ?' ~; R# L5 D9 a" m
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)
% E: D; R2 P. G5 Lset j
3 J; @: T- M7 m, Z, ?5 W9 u( j + 1)
8 F8 }2 ~; k* |! X  F) W1 z% q
]# O2 ?6 [! f9 g5 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 ))0 a' T: P' V7 J0 Z$ a* r: n/ m

4 w$ k4 e+ i; V/ O, G8 ^: L; h

1 H8 \! L( c# P' z: d  r7 p8 Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) ?: o- x  ]$ O$ ~
;;
及时更新il的评价质量的评价4 k5 W5 l' z5 B4 z3 o/ j3 W- z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ d  Q# i% W5 g5 C% k& s. Hset l (l + 1)
& ^1 }+ d. p& i$ J]
9 x2 P+ k, s- R( l, hend: x* b" }: m$ H- P4 K, I

# y4 P# S- B0 mto update-credibility-list
7 ~% A) N3 h: j& b8 wlet i 02 K1 x4 c: l! @+ I' \
while[i < people]1 I! }1 |  q4 Z
[4 F2 x5 M! b3 U( @+ U! R7 n
let j 0
7 D9 O) C: ?6 H+ u' s  V( Slet note 0
  f1 v, B2 P6 J6 Qlet k 08 I, q6 k6 n) z( \' L5 e8 H
;;
计作出过评价的邻居节点的数目, J9 y' X  V& l* [; L9 L- d
while[j < people]* g6 H- |, G1 w" }7 W1 U' j" [' q6 N
[3 W6 X* E) t  J3 F- E
if (item j( [credibility] of turtle (i + 1)) != -1)* l% _9 [2 X! J$ r( x* y; e
;;
判断是否给本turtle的评价质量做出过评价的节点% X7 l  r8 ]; O/ Y' A6 o
[set note (note + item j ([credibility]of turtle (i + 1)))1 x' Q  S: O0 o- R
;;*(exp (-(people - 2)))/(people - 2))]

( ?4 [$ G; L! b, l+ uset k (k + 1)/ k. _* i7 L. Y2 t2 {, R" n
]
9 f! y' o8 `& u2 \set j (j + 1)
  N9 n' F' {3 v: E3 ]" j+ t$ I$ k]& Y2 {6 c/ f1 [- S9 b
set note (note *(exp (- (1 / k)))/ k)
1 x$ p5 h. F- k& W0 A8 cset credibility-list (replace-item i credibility-list note)
' J- _* D" Z- p% ?7 h' X6 {8 Kset i (i + 1)  I8 I- i; w8 E
]
2 _. w% A3 T$ _1 tend
) x+ s8 g% u) a5 w5 @' H. P& ~% n- H4 r0 F
to update-global-reputation-list
  u. `7 i; W. B6 G' A, ~9 _. H; ~let j 05 _# ~7 r1 Q( Y- V8 c- d1 G
while[j < people]6 N) f' z0 M( g: C6 R; S
[& j$ x8 k2 w& D: ~) K7 J( x
let new 0
  z' v6 M! ?! L9 c# ^" i6 p;;
暂存新的一个全局声誉9 {. R% ]. i/ v
let i 0
9 y) Y+ V% `! c# dlet sum-money 02 ?, X" B9 L  u3 M; V
let credibility-money 0
- R' @' }/ X8 |$ H+ D! I2 @. Cwhile [i < people]5 h/ s/ L( m8 p- l" a( s. c6 y
[9 k4 s$ M. R8 [% B
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( Q4 m9 N5 D5 k9 ~4 m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- A! y, }/ B7 y7 D
set i (i + 1): `: H3 l! [* Y! e
]* P! i' G* ?' R: w, E- k, X0 g
let k 0; d: O, N( G' K+ B6 D
let new1 0
/ s: `5 q, Z  g* a2 L4 d1 {while [k < people]) [/ s4 d# r) x+ O* i) u2 W
[
5 r% R1 t! ]- V" W) [' p( m/ Pset 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)
; @$ Y5 v! M) ?5 F1 Q6 Pset k (k + 1)
4 i) }7 c6 r9 j6 T0 W# ~/ d7 b]" g9 a5 r- t5 m7 x! P$ a9 B/ ~9 ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : }* W6 I6 x4 G7 b3 {# i" h  ^
set global-reputation-list (replace-item j global-reputation-list new)
% z: ]5 Q# ?, L( t2 w2 hset j (j + 1)
& x  `' ^% G' G5 A, V]
6 Q6 T/ q# B& {. A/ g5 b: yend7 [/ ?- T. y9 |6 [4 e

, L0 M' {' I6 ~, V" @6 g
' C0 r  U- [# \% ]# e- j) n) w2 A/ j. k8 a. w
to get-color
; c+ A! z  s5 q, q% G; _$ D9 X
# C2 N1 P" s3 J  ~" a; Pset color blue
5 l1 Q. |; D: Q$ m
end
( w' h! i* m( J0 L; H6 N; p2 g4 Q$ n- z& W% c, R3 w1 L6 Z, g
to poll-class9 h4 L) W! J  F0 e
end' h& n( k9 b, \) i

) s# z, {& R/ q1 ], q6 F2 @; cto setup-plot19 D8 Z! _# ]' i' {

$ R3 N( m+ ]  H. V) Nset-current-plot "Trends-of-Local-reputation"

$ @8 |& L/ y: \! b6 ?. r2 k' v& `
& }: B, H5 n+ kset-plot-x-range 0 xmax

# [* `* I9 v) V9 r: Y, N
4 G5 u% E" `4 ]7 jset-plot-y-range 0.0 ymax
2 l) H6 m( g$ s
end- M' ~/ @$ ^6 ]$ h' X; k& n) O- S9 a

6 U# _, r' j+ ^to setup-plot2# O" h: P: I$ J5 I/ L5 @+ I
$ u* N% g, C/ y# g
set-current-plot "Trends-of-global-reputation"
- ^  X7 N+ @* m" Q, t0 i8 L
5 s2 W$ a( V3 Q* Z. b4 m
set-plot-x-range 0 xmax

- k$ G" J9 J- I* _. T' U- F# j6 G3 R! Z
set-plot-y-range 0.0 ymax
3 F$ n/ r; v# C- G- i8 o) `
end
0 k9 m$ l4 {0 p# \. W3 O/ H- ~+ C/ D' a- \  ~& ^9 W. z- f
to setup-plot3
, j8 Q: R+ J0 i9 W. k% p" C- W2 |
  c8 v( F: ^- R* L3 Q" _set-current-plot "Trends-of-credibility"

" s# D, q/ v6 @7 F
' g$ B9 O) K* e) E9 S( pset-plot-x-range 0 xmax
$ D2 T: b3 W6 `: C
3 \; q8 R6 v  ]8 k7 o- u) r( y
set-plot-y-range 0.0 ymax
# L* b% `5 ]% d8 z
end, l* V0 [, T7 F

, m$ Z! ]9 H" @/ qto do-plots$ S9 ^" h' O4 o# o- L
set-current-plot "Trends-of-Local-reputation"/ i7 z1 G0 a* H$ p( J4 M9 ]) a
set-current-plot-pen "Honest service"4 a; a# T# l# V$ ^# r8 S
end
; ~  F9 t5 h' F$ B5 y) l- e! A* }/ l5 {
[ 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 @! M- x5 h$ X/ j/ o
! `: M7 P( X9 @- _% ?0 P6 \! J' F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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