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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:* o5 b( \* M) Q) \2 p: f
to do-business
+ `7 I9 g4 ]4 G  [ rt random 3601 l) p! T6 d" \9 A
fd 1
3 S9 V7 s! l. h ifelse(other turtles-here != nobody)[4 p8 ~5 }  ]! U& D! h1 t+ L" m! Z
   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.' B6 s) y, W& n/ ?7 Y6 V. b
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ F: k& y% I; q1 J% \  Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 t. E5 i7 q8 F( \9 i. p/ S   set [trade-record-one-len] of self length [trade-record-one] of self
& {1 v' m9 S& m) ~# B   set trade-record-current( list (timer) (random money-upper-limit))
+ u6 |2 a) ^6 P/ G$ W5 m' J) @1 M4 Z
& I* M8 }& K( ^) [1 d/ N5 I4 C9 K问题的提示如下:1 \) [% N- U; f

) Z1 P8 A0 d. w6 Z( Ferror while turtle 50 running OF in procedure DO-BUSINESS9 C  f& m0 P5 b
  called by procedure GO- t( N* U, J  z3 m+ p$ F" w
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! ]) S/ E: Z: n
(halted running of go), Y7 ~3 S, G1 @

1 Z. ^; M$ }, W- ~) F: ?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~~1 f, l& F% l3 l, d/ W
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教# ~7 p  T) M9 c
globals[
! ^) B: H# d, S: T) Lxmax+ a, H) C- G" z6 _' [
ymax% A6 f9 v. k! z0 a6 V& Y
global-reputation-list, h' G- F* o7 F% i# [0 b% L9 L

7 C% r! [1 v3 |/ D( s1 q;;
每一个turtle的全局声誉都存在此LIST5 i8 G  S6 q* i9 ^
credibility-list% f) M; T: C$ R& ]' N! r; F
;;
每一个turtle的评价可信度1 a5 e- a9 j, X/ ^4 Z3 ?
honest-service
9 y4 ?2 c0 d# ^1 t$ ]; ~unhonest-service, I- [+ `. m& v& {
oscillation$ F9 W. F% a) K7 J/ D
rand-dynamic2 Y/ N0 S) H4 ], C, R/ k( P
]7 Y8 _* B+ e) _% S
4 h/ V6 X5 j; \2 t4 @3 k
turtles-own[% {5 s/ Y6 ?0 E+ D5 e& _2 J
trade-record-all: }& i8 E6 H! ]3 h4 t  s1 D
;;a list of lists,
trade-record-one组成
2 I( T/ l2 X% Ctrade-record-one
& i9 R/ F' g9 w8 X! N9 C' q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 }+ i9 T6 `: q, u. w
+ _' N9 m, A4 g;;[
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]]
, M9 e& j+ h6 L4 z6 S( [; utrade-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]
; Z7 m1 R' m6 t9 A  Ecredibility-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) Y3 ?7 v$ {1 a( v! ~" t
neighbor-total; B" e7 X) U7 r) c4 ?
;;
记录该turtle的邻居节点的数目/ y5 C0 v% w2 W% {3 w! K
trade-time/ J% S4 _! r; d: f7 @6 g
;;
当前发生交易的turtle的交易时间3 P% F4 I6 Y8 r# O! R3 G3 X3 u
appraise-give8 B5 p- A+ `/ ]7 |
;;
当前发生交易时给出的评价
+ ]9 w6 e; x8 b: d9 h5 Kappraise-receive1 X8 B0 M% ^( L2 L# u8 u& m, f6 P
;;
当前发生交易时收到的评价+ D6 L; I$ \- X0 ~& R, x1 Z( K
appraise-time5 X5 a5 s* t1 z% b* @$ h, Z: k
;;
当前发生交易时的评价时间
) _9 l6 d) {5 Z7 P2 Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 ]4 X9 ^4 ?) E' ztrade-times-total- Y9 @8 D3 r% }: f3 e( R
;;
与当前turtle的交易总次数
) I8 [1 Z/ s! F' ?6 ctrade-money-total
# b0 U1 t( a- v;;
与当前turtle的交易总金额8 f& O! |3 ^3 y: o
local-reputation
* [5 J1 {; V: V1 t0 C$ }global-reputation
( ^; i" R( W$ ycredibility9 G" F6 c; O  O" S1 M& N) K
;;
评价可信度,每次交易后都需要更新4 e/ y% ~0 |! @1 ?8 F; r6 g9 Q' l
credibility-all
+ S, z5 c$ l9 }/ v;;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
5 V2 X+ ^( W  b( [2 c
, i: n# q+ a4 P. L) v! N;;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
) @6 f! O% }+ k# A& ^; [# Acredibility-one
0 [) n  N( y6 M  W: M;;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
- u  M- I3 k! cglobal-proportion
2 ^2 p1 V! W* h9 C0 f; pcustomer8 x  a0 R2 |! Y5 E; x* p3 O
customer-no0 C# W8 D& z/ l' S" Y
trust-ok' H  r9 K* k  e; K
trade-record-one-len;;trade-record-one的长度& U4 y* Z: q8 c2 {+ V# c1 t
]
  X0 q1 U  E7 _- m7 p+ D
+ @8 i- D1 P6 p# F9 h& ~;;setup procedure
" ^+ W; R/ C7 f  W5 x' K6 G3 k1 y: l  _- N. h" ~5 v
to setup
: r# ~/ A' u8 @( Q1 w2 b: o) |) P  H+ H4 }7 Q( n3 D+ t6 {1 O
ca

) Z- b) o4 j( @6 {; X% n4 N, U& V8 W. o; a  m! a! h* P
initialize-settings
6 M# c# K1 u6 t' |& i% e: Z$ H
2 W, N0 \3 o$ Y: u
crt people [setup-turtles]

! ?( i- l" L3 a# y7 T! P2 _- @
$ g" k1 |. V. Qreset-timer
3 x  q4 o( s/ j( H9 n- D

& p4 N5 h6 E8 A6 {; ?6 Dpoll-class

9 g! k' `& F  V3 S* {' v* w# P( I
& M" A" M- F1 Z$ h0 ]4 e) L- |setup-plots

7 A0 G# n7 L- f: N6 R% t9 q
$ b6 M0 o# L2 S6 Xdo-plots
' W9 ^8 b4 F8 Y: W! ^& I9 {  R
end' |; {  O- C& O2 M! R5 t

( l! G% r2 `: P- I2 i6 |8 bto initialize-settings) [1 j3 }' i! e# y
; N% f5 {' e; C/ x# w
set global-reputation-list []
2 N9 b# ^. E3 v
0 O/ X$ G* L% D2 m( l
set credibility-list n-values people [0.5]
+ d, y0 b" H  \0 u! ]; G: h
! u, @/ U) F; \; L. J
set honest-service 0

1 z/ J0 n& a' P8 O' q
' U, ?& t- z) Zset unhonest-service 0
+ J6 q  A) z+ h) q
# R# q' Y/ {4 N6 u0 ]
set oscillation 0
1 @4 b# K+ k  K! ]

1 E7 v' p3 f3 M: g8 r4 l$ V1 V0 v3 Uset rand-dynamic 0
$ z5 Z: g( d& v$ R) w
end
8 [4 ~+ d. k* R9 P# P0 \
$ N! V# q5 W4 ~1 p% Vto setup-turtles
; g9 B8 {& c* X; E% Z; Tset shape "person"8 F2 X2 T# y( `$ r
setxy random-xcor random-ycor
: Z. e% ~) @1 n; Xset trade-record-one []! X* V8 h0 j% R- ?
- d# q7 u5 \0 |2 e  `
set trade-record-all n-values people [(list (? + 1) 0 0)] : E6 x7 F1 L0 C. H8 _* c  r8 S* T+ A* v

' n5 R+ q% u2 b# xset trade-record-current []% W9 ^3 a. n! s8 I7 j
set credibility-receive []$ ^1 B; n) w4 ?2 F, N
set local-reputation 0.5
- Y  q! D- @3 v1 d9 Pset neighbor-total 0
1 @' F* q9 e/ t3 r% ^5 ^" oset trade-times-total 0
2 m  G0 W# ^9 Bset trade-money-total 06 X7 k- v# J3 L( R. g
set customer nobody
7 z+ {, {# J1 ~; K9 B! k1 \9 hset credibility-all n-values people [creat-credibility]. I6 [* E+ y2 h% s+ i4 E
set credibility n-values people [-1]8 ]( z; A; q+ x
get-color! T& U, T1 g7 }2 s  V

) T  M6 r2 D" Q) Cend
! F0 o$ @# g0 Z" O1 \2 X
. S2 r; X' s5 P2 h7 Q; J6 u6 fto-report creat-credibility
8 O) P% Q; F2 j  mreport n-values people [0.5]
0 C/ m) B- O2 _; N, Nend
7 @( o4 q) X( t$ c% E5 y0 t6 C0 V; @9 A! w/ v
to setup-plots
& q; u8 E/ G/ K: P: u  y7 O& z3 y
' D  W5 W7 a" Jset xmax 30
2 ]8 `, ^+ U2 e3 [, i; U! t
2 ^' s$ k2 m# a+ q
set ymax 1.0
0 U( g$ h! o  `8 m, B, ]* y

: ]4 P4 _' D0 b" w- }4 U5 y, f3 [7 wclear-all-plots
% p8 G5 {4 ^2 l/ D% g$ ]1 V% F1 h

; h6 V7 p. I3 Rsetup-plot1
/ O' \1 f# q6 U0 s. S

5 c/ k( Z* _# W4 \, J, h: tsetup-plot2
' f: N1 ]" Z' y' m, E

2 Y- b. a: S8 u% G) m5 ~  Osetup-plot3

0 w* J8 [$ \% N4 Qend  r' D# x3 Q0 g% B
. R, `0 [5 d5 F% _% [% k
;;run time procedures
1 y9 E! @% U6 i% u
- }2 g2 r: i! V4 C, u0 @" t' C" i2 qto go0 V9 H5 o! ~) ~5 ^+ w
# ^& g; O' I5 ~- o  R/ y7 L
ask turtles [do-business]
8 Z" Y$ V* d# [) @! d9 _+ Y
end. E5 p. s5 p9 H9 y5 I2 N
& r5 [3 x" U$ K1 F: g  M6 I2 s, |
to do-business
0 ~" c7 h& S5 p

' @+ J3 f& j  y7 `& |6 j* C( K; m$ G2 z7 |7 w3 G
rt random 360

3 D& H4 J2 H3 G( k: b) \/ X
0 R" T5 F& H4 z6 }( Nfd 1
1 D& v( Y. `: K+ _' N  \" K' {
4 S: @! G5 y; b) q) |
ifelse(other turtles-here != nobody)[

& a9 |( k; f3 k# \/ _9 X* x& F* E0 ]  z+ ?% }
set customer one-of other turtles-here

; c9 u# ?7 U2 ~! R/ w- T" H+ K  M; H2 g5 E/ {
;; set [customer] of customer myself

; ]' ?$ Q; ]8 {0 [0 y) n1 y
9 G0 v$ {$ |( ~7 j, v; x) rset [trade-record-one] of self item (([who] of customer) - 1)
# F' P; X3 j- W[trade-record-all]of self
) }1 P7 N5 `2 L' J2 {+ o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: }+ y7 S2 F; A
; O, o: |8 Q) A: sset [trade-record-one] of customer item (([who] of self) - 1)& J. O8 p1 c  c
[trade-record-all]of customer

9 ~( l, C+ ^0 E2 `% Y9 e1 [% n% s( |: I% f' u' I3 A
set [trade-record-one-len] of self length [trade-record-one] of self
1 ]  z' w- ]& {" \3 @3 @

, J2 m% W  P  `0 v8 h& w' N$ `set trade-record-current( list (timer) (random money-upper-limit))
6 }- I  u& y! z6 \1 j& \/ e  h1 m

) o9 u0 X- _: C% Z! f& H; sask self [do-trust]
: X7 Z4 ^% M6 A$ {( k;;
先求ij的信任度
& a7 _3 F1 f$ x% f! V+ R0 _& D
6 B4 P# L& @3 T8 d$ X4 S- Hif ([trust-ok] of self)
  @, F! ]$ v- ^;;
根据ij的信任度来决定是否与j进行交易[
+ @5 \7 n; I% ?2 L- Z+ [ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' o& \3 y5 Z6 ~$ C( L2 ]4 W2 D3 E

, a8 y% s0 V! v- W, @% m: {[

1 ]1 z2 X; [# D$ M, n, T, K& ^4 R  o
do-trade

, ^: S! W" C# q* O6 P0 D
0 [( H" t0 c0 K" Y( Bupdate-credibility-ijl

( w- W5 T9 G, A- [1 w# ]) w4 a6 e
update-credibility-list+ f' Z2 ^% ]* H2 M9 Y: s8 X4 H
0 N& S7 E6 D0 C, d, k2 A( D
1 v  K! |1 C9 n% y$ {5 F
update-global-reputation-list
% J6 T0 _9 |4 G/ R8 Z- k: I
6 n7 J( A6 |; G! n2 k! Q  x
poll-class

! k8 H* I( ]2 i9 Z: h) N$ Z" e3 \
+ Q4 b% g- a3 r- p/ g5 Wget-color
; F' \: x: M$ j4 b1 v8 z

  U' I* c; H" \- n]]! D% }7 W# F* p: W  k9 f+ i( S  k

9 V& x4 Y3 B8 k' V;;
如果所得的信任度满足条件,则进行交易# [$ i8 v, d& A3 w. V% ]
. }' w! k6 n9 n5 B+ Z7 T
[

0 g1 S" [  U2 E% v1 p/ |
) }, [" j. w" P9 A( lrt random 360
' d! ^0 q' c% _6 |8 b0 O! M
* I2 [; W- ~2 |' U8 n
fd 1
3 _$ m9 W( S' Z- X' `" q
7 Y) o; k4 ]9 T6 ?# h2 |
]
7 g* O4 T$ q6 U: S

+ r  _1 E; i* F+ G5 Gend
7 w. \$ ?" n7 n; G, D/ R( ^

! {4 }- W' J( I3 K9 A: ]' _to do-trust , j$ s. |9 K7 v5 G
set trust-ok False
+ K  D3 `( F: ~; p) h6 a9 k+ n( O7 C: Y$ j

- p4 `5 X- m! X& I$ y' {2 qlet max-trade-times 0# F- E+ o# A) ?7 }& n7 U
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( Y0 p+ Q5 K. a- m4 Nlet max-trade-money 0# O! K7 r3 L2 T# B( x0 H7 {. B+ M. _
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% m  E, N# ^% v) M* {4 V5 A- @# qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ e% t& t. p$ }: l
6 {9 w- [- m! P" w/ Y

; u) ^. D: N& J' W! I4 mget-global-proportion5 ]# L1 e  X8 H0 |$ f6 a1 T. o
let trust-value
9 e9 f: w* L4 N" blocal-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$ Z6 i8 q0 R1 \& B7 Yif(trust-value > trade-trust-value)- f& y  B  |/ y) T0 @
[set trust-ok true]
! q* c: a6 D+ [1 u9 \$ Yend4 m$ _* `' e; o4 x3 z, O

1 @% R% U: \6 a$ a9 H% ], V; `to get-global-proportion
7 q5 }; U7 m: {' N: z, X" O+ s7 |ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 H. U5 {, @  S5 Y4 l- D
[set global-proportion 0], a, f7 E8 `! G4 \6 `/ G) k
[let i 03 O8 K) E9 [9 ^& D5 Q5 ^! Z# x
let sum-money 0# Y% \; L! B+ k' u, }
while[ i < people]
" W6 D. R: D# B5 V/ ?$ @: U[
4 V$ U) h: u* B* g; u+ Wif( length (item i7 U( ^5 f8 V7 ~1 G- C7 v7 N
[trade-record-all] of customer) > 3 )
0 D3 w- ]6 B. v6 c& O( l+ a2 Q8 \( g& H
[
; t  w0 i: _8 Z) m/ L% [set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), _' j) J1 V- C8 [% M
]4 W" ~) ~2 H3 _7 m8 l1 d7 S- J
]
  O; l. J, ~$ _# O8 q" B% Rlet j 06 `' e3 A7 K) {9 Q, Z$ f4 Q
let note 0- H, {  I; X4 p; M' y& I3 q
while[ j < people]
2 q2 S% @" N0 K" P8 Q: R[/ K1 i5 O- K$ s2 y3 Q- f
if( length (item i
4 \, `# G  d+ ~  Y: L[trade-record-all] of customer) > 3 )
1 ?) x9 G, ?; y
[$ r1 C! l9 [4 b/ ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ a1 F8 A4 Z7 k* F) |
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ v* `* @3 m6 P6 y) U5 X. A$ L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' c3 l- a- n9 I+ Q]4 M7 Q0 ]3 G5 K% o9 L/ j& ~3 V
]  f5 D) E" @9 T) F" X+ d
set global-proportion note
4 Y6 i" ^, f: P* r& [7 s]
6 _& K7 S& _" v0 k4 uend
+ ~# X# I8 R; K" I& |3 ~  j
4 u& @3 j1 S0 L5 @3 Ato do-trade
& [1 a5 a5 ~$ R1 p;;
这个过程实际上是给双方作出评价的过程
$ t. {, V# }) G/ {: |$ Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' V9 ^, C8 a/ `3 C- D% j- R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 F# D3 }1 y9 {' Q, M- sset trade-record-current lput(timer) trade-record-current% K1 v9 S$ v7 I2 A/ p
;;
评价时间1 f8 b! h6 a  m
ask myself [1 @" Q8 Q2 P5 d- y
update-local-reputation  C/ j# G1 ^. Q7 L$ [# g, `. N. f  i
set trade-record-current lput([local-reputation] of myself) trade-record-current
- n. e" K* U+ z( V. B7 c]
. m& y9 x: n- P) B5 x4 Z0 Q6 ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* n" q. _8 l! I2 L4 L- W" e% W0 L;;
将此次交易的记录加入到trade-record-one$ H3 e* k+ v0 y" ~/ Z- ~9 D
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 q6 b+ n( R1 a; g+ y
let note (item 2 trade-record-current )+ ?/ l5 R& s& D8 \0 H9 }
set trade-record-current
- {5 R) |1 S# i4 }4 S9 [( Z(replace-item 2 trade-record-current (item 3 trade-record-current))
( w0 i) u3 Q( n8 z, o9 _
set trade-record-current5 G; c4 r' A2 F$ s& q
(replace-item 3 trade-record-current note)
8 H! Q7 ?; T( j7 }2 Y: Y
: Y( G9 I. S+ a( Z* w
1 p/ R, _, y/ C; C$ n& Y" G
ask customer [& \" n/ L: J* X* U4 n6 l, y
update-local-reputation
8 p/ P0 f: y6 a' E) t/ P6 dset trade-record-current
7 t, P& M) y7 p) p. o7 O( e, ~  n(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; S5 O0 v, V: Z* K) K& ]( ?: E
]
8 S$ U. R; U' {: U! P# D# n# z0 s1 Y) R/ T
6 M) w1 O- n8 g7 b& t* v
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ h7 g7 i' m5 w; _) W4 U: ^6 K
0 R- q  U6 O1 w4 k0 F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ N% @; c: L% _4 ~/ ^
;;
将此次交易的记录加入到customertrade-record-all
3 y, {2 v+ f* Z5 Y: i4 Pend7 d0 m( T4 S) B

6 w+ A$ [( h& o, \  ~. ]4 F; wto update-local-reputation
2 t, f6 _5 n+ o* s$ h( |: q4 y3 Mset [trade-record-one-len] of myself length [trade-record-one] of myself
* @# b# R2 Y% y4 n1 S3 P" E/ N6 E( ]: B, V6 `9 w, w% K. o# e
1 W) g6 y; v& ]% }, T, m
;;if [trade-record-one-len] of myself > 3
9 P  k/ C& S7 T7 G/ i+ I
update-neighbor-total
* I( ~7 T. Q* _8 J+ `2 s$ G0 ^;;
更新邻居节点的数目,在此进行- Q7 f1 f/ v/ }
let i 3
: S6 }2 q6 R5 Zlet sum-time 0
8 `: v1 D3 D  O# D2 k1 C5 e  nwhile[i < [trade-record-one-len] of myself]
8 m" Q  A( m# ~0 _. r/ G[# @: L) p: f9 G. f+ d3 Q! `2 K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 u6 W6 \8 T7 C4 [3 p0 Q& H/ s
set i* F. }& S1 ?  U( w/ S  V
( i + 1)
9 V7 }  I% G0 N- i; w
]: r& _: S3 @7 j/ P! w8 F
let j 3
, u; s) o- g% V! Y0 ?- h5 K7 i0 {let sum-money 00 u, |3 p2 \- W7 h$ f/ S
while[j < [trade-record-one-len] of myself]
9 V8 c. k, h' P) d5 v8 Q( ~[5 C. P6 X8 e9 R* `& I' A% ?
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 D2 d' O7 y9 P
set j' J% ^6 r3 i' Y. A+ i+ A; s4 |, Q
( j + 1)

. C8 ?/ h4 t/ t) e8 e]: j+ D/ M/ I; M. E# F: l. W
let k 3
- i5 T$ B: j5 G! |; Nlet power 0% @- U: w1 |$ P7 R+ m1 N# `
let local 05 u. y4 N8 U  v) F/ i
while [k <[trade-record-one-len] of myself]0 {  g: E' o7 i6 e( ^& B: B
[0 V/ O  h) b9 y/ `, ?/ j
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 h9 b9 ]8 ^) K% I# _; b
set k (k + 1)
0 B" [9 a2 t0 R1 t% V]: f) ?6 w- ?6 X1 O
set [local-reputation] of myself (local)
/ ~9 q  K' u) E/ f$ u! h# c5 W8 xend
1 E+ O# w( ]6 u1 s; N* T3 X8 E- `0 d
to update-neighbor-total
( e# Y- x& X" u% A" f) i9 s' o+ T$ l0 J' V+ D& ?; Z* k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 N% d  ^2 J& ^8 M0 M) S# u- r$ F- C& L
; S8 y+ ^" G# S! n, t) E9 Z

  _# J- Q5 w3 r" @% e. a% lend
+ G0 j) r& k5 g% O0 t  `/ B) X6 p4 I2 {: D9 h& u
to update-credibility-ijl
# l: o3 x3 K4 \4 U, V9 _, @
- n, @( Z1 Z2 A9 e, u5 U5 l;;
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。2 y1 C9 k+ i* H  H( e; @
let l 07 u0 P+ r; @  _
while[ l < people ]
/ Z, T' J# g) }7 |3 B- n5 O;;
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
# K. g+ ~$ ?3 Y0 v[
9 e  _& s. k) T7 W. ^let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, f! ^: D( i2 n' ^- wif (trade-record-one-j-l-len > 3)' W1 e1 u# K& N" G% [
[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
9 _# S6 i$ H) Klet i 35 }) s7 o% T! o2 p; e& a
let sum-time 0. b, d! b/ R  m  Y  n
while[i < trade-record-one-len]& B- A' M" x/ r% \6 P
[) u! i* b  r- w
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 N. ^( o8 E, J4 ^; I
set i7 x7 A! K5 o7 u7 k  H2 i! U
( i + 1)

+ P  [6 j6 N! A  f]
" V1 g' ~- p5 i' G4 F, zlet credibility-i-j-l 0* L/ c, R( H, v, Y4 K; f
;;i
评价(jjl的评价)
5 ^' G$ ~" p3 Y/ x: ]0 J3 j+ O  h3 Blet j 3
! W$ t& o3 X+ ?let k 4, S  W3 m' z- N, ~3 v. {
while[j < trade-record-one-len]
( x" ]9 ?4 P+ S) y* F% P[1 U" U! \3 H% R0 ^. h& s
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 d; S' M' z& G* w
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)
* E4 Z# c5 a, f" K6 X: vset j" {! Q0 [. A. d; O6 G7 ~
( j + 1)

- t1 R2 r  W! i* c9 {7 [9 @]' [. V+ a* @0 j+ @
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 ))
  `' `' h+ o8 p5 z
& F  |; {# C* X; l
$ A2 t( ~$ u: E
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ W0 P3 a: E* l, {% I9 _& r
;;
及时更新il的评价质量的评价
1 L+ }( }8 ^8 D2 Z+ \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: _: g+ L5 Y2 k5 f! Pset l (l + 1)
4 \2 e  b! ]$ v" ~2 U$ Y* Z: m]$ d. S0 H/ N- d2 v; [. @
end
9 }1 K$ |5 H6 b- g2 G5 k. O' z+ L7 o8 ]3 [( v0 k
to update-credibility-list5 S) d  C1 k8 G3 ?. ]+ p! T
let i 03 F, W% L, F" N9 P2 w! x" ]" j0 F
while[i < people]
8 _  V/ q) t) @+ J% a/ [$ W# p[
- D; M- B, S; z: ~let j 00 r  F0 r& p. j& _" x
let note 0
" L" o# Z' d3 [7 }( b( O4 nlet k 0
0 A  n  Q) n9 B+ t! @;;
计作出过评价的邻居节点的数目: B' s' B' U4 }- x3 G. S5 O
while[j < people]
3 C. h  C/ X- i  ][
9 T9 V! i6 F# p4 m1 ]if (item j( [credibility] of turtle (i + 1)) != -1)* l1 D3 b4 C+ h$ `5 F( v* z
;;
判断是否给本turtle的评价质量做出过评价的节点: y0 w( X, E# B# u* a- a
[set note (note + item j ([credibility]of turtle (i + 1)))0 G/ R2 A/ s+ \3 J3 M0 N3 y
;;*(exp (-(people - 2)))/(people - 2))]

' ]# n* n- ]/ d" i' r2 u& Jset k (k + 1)4 c, ]& X8 h' _9 A  E/ X
]
+ E0 ~" J/ \. b4 W  F& ^- z! w  Kset j (j + 1). ^3 h4 ~' b5 M9 B3 o
]
, F( y$ Z0 T' {( I9 J2 Bset note (note *(exp (- (1 / k)))/ k)" k  v* s+ r) R! L% y. K
set credibility-list (replace-item i credibility-list note)
5 C7 i1 k- w! t7 }. Xset i (i + 1)
# i* H. O2 @% I, s* ?]% J7 J  H" S9 f& L! t
end
% O) Q# n) J- o& r4 H8 p( |' \/ S0 r
to update-global-reputation-list
' G, T& ~/ b& o: vlet j 0
; u6 Q9 ^% T+ x3 Pwhile[j < people]
9 P6 y# ^, Z* F; o; q; j, G[: {$ E7 f8 p1 C( t: T, I. h: N
let new 0/ i: c' e8 g: e) p- p, |
;;
暂存新的一个全局声誉
! B& t8 p' R" u6 R8 ulet i 0
' m& Y- ^# c/ B4 O2 ulet sum-money 0. O0 k1 m+ p+ r1 ]3 o- i2 U9 Q
let credibility-money 0- h' I0 a* R. Z7 Q
while [i < people]
* j' ~/ C8 @  P4 G8 |1 f[% w; V+ a$ a5 Z- A3 X7 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 J% O; x% _9 P/ r- W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# P$ q) N9 h1 ?6 l$ }# n+ c; a8 y1 }: Uset i (i + 1)5 C0 ]3 _6 ?: L9 }
]# ^; W5 s, U8 ~" E2 o% h
let k 0( l* ]0 B+ c* v* X5 f# K& w* ^
let new1 0! h& {' L6 s* d0 g1 q" U
while [k < people]" g5 `, g. e" k: y. {( C3 F
[
7 A! n; r: M' Z, sset 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)
8 M* i" E0 L2 W1 Oset k (k + 1)$ g4 l0 F7 J! N2 M4 e# ?4 K
]
1 s( P! h+ C% k+ ]  F4 X% J6 o  P; Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ }* v) b; `$ p; q7 D
set global-reputation-list (replace-item j global-reputation-list new)# R" T" J5 h* e" e. z8 M
set j (j + 1); J/ B, d7 a3 w2 J2 _" }
]
+ @7 G6 h% y: `0 b; _9 Aend' ]$ g9 ?8 `3 S" m; c4 Y0 a3 q
& ~$ a# m6 |2 W5 T2 U
0 h9 Y- G, C9 a

$ [2 @$ s* D8 {* X4 p  s6 {. rto get-color6 j  b& W# j" c/ ~+ v( r/ x! H" x
5 p3 J% W$ z+ N! D' G. Q
set color blue
( X% K- [0 v' {* o5 Z, f9 m8 T
end; d6 F. ]- M6 L7 @& @1 r
( j0 q% q! x4 r6 C# c$ D
to poll-class
( L  F/ \. g, k' \/ \, j( S0 `6 dend
- A1 ^0 u* I1 j
/ C4 \9 k3 G9 v$ ato setup-plot1
3 G* d& ]8 H2 u- P+ J
- S) _* _' D, I3 t9 d8 {# y' C. dset-current-plot "Trends-of-Local-reputation"

# S4 D2 ]% j$ d8 y, b& Z* m* W/ {$ u, v$ s3 G
set-plot-x-range 0 xmax
2 Y% Z7 f1 T6 C0 `
6 _  E8 u, q) _6 A8 n. R5 k
set-plot-y-range 0.0 ymax
6 o7 Z5 S- [; A
end# f, U* T" j6 o' z( H' p2 e
- l; U* P) J# `$ u  g; D7 ^5 n2 r
to setup-plot2. Z; f- `4 s1 p3 @' \, a; y

; r' ~6 C' Z/ D3 T7 Wset-current-plot "Trends-of-global-reputation"

/ a8 C# ^# Q: k7 L) {7 H1 z/ H
' J( I" A. V! y3 k8 Aset-plot-x-range 0 xmax
) K6 W2 x) w0 [7 Q# ~( P8 o+ [
- Z0 W, L6 w" ~) ]5 n
set-plot-y-range 0.0 ymax
5 J5 P6 I7 y7 n; f  _9 n6 r
end/ J2 I5 X( W5 ?! ?! {! Y- J; J
3 J3 O  w% m7 c, Q6 m
to setup-plot3
$ ^0 Y, z  U+ M. u7 k8 x0 q* Q2 T
* E1 A6 @/ i, n$ v& I1 c2 h3 {set-current-plot "Trends-of-credibility"

( G; |" T* f$ N! \4 S" D/ G4 p( y9 R! ]5 p
set-plot-x-range 0 xmax
, Q8 F! g0 k  R; y" D5 i5 i
6 p$ u1 J1 u( [& h* ?) K4 x* H  O
set-plot-y-range 0.0 ymax
0 c8 {; O( S  f  D+ s3 X# ?
end3 L6 `9 y5 f3 {4 t( z9 h* H
) }3 l- N+ g0 J: p% J" M0 j0 h! H
to do-plots" U& V) H0 g" ^$ \( i, R
set-current-plot "Trends-of-Local-reputation"
5 r* @2 w2 `7 M- ]0 uset-current-plot-pen "Honest service"
& s3 o  N: M8 i* s8 H6 a( Zend
: [# F4 G3 _2 o* y- V* ^8 e. }/ o& ^3 k3 f$ v" ~2 w6 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.  a8 p4 T, m4 G; q% s. K) g
3 b. b7 v* k' Q; ~5 w% v" Q
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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