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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
5 l* y7 M5 x+ M  `3 _to do-business
5 `3 {1 t7 r% J4 ?, [1 X( _ rt random 360; w8 Y- D% W" H3 b
fd 1
2 O/ I  j0 b; [ ifelse(other turtles-here != nobody)[
7 ~: O4 W2 _* 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.
" r5 @/ a8 ?8 t: P6 ~+ B   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! J9 [, b6 p# P7 w6 p( _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ ]% l' V- ~$ l& g! A# b$ S) X   set [trade-record-one-len] of self length [trade-record-one] of self0 R' w+ `2 b4 l& ]+ S# S
   set trade-record-current( list (timer) (random money-upper-limit))
/ m0 m+ P! r) G" r! k( G1 |8 n7 q
9 G( f3 a# u/ N& v8 U6 w问题的提示如下:
/ k9 p7 U* }3 M# X" J+ v! n5 r5 J
error while turtle 50 running OF in procedure DO-BUSINESS
" h0 ^9 l5 r8 s3 _  called by procedure GO+ F" Z6 a9 |, R- t$ _
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& ]) Y" d! A7 m" H+ X7 q- ]: k
(halted running of go)
. H* K: H; n! G% \2 I8 W8 {7 H$ n
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~~. j1 s& `; `7 y- a) q5 B# _
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% r/ D/ f  W9 i
globals[: L; F2 ]4 b# J( H& I7 _( \
xmax
+ H2 n  `9 Y! M+ l. Z0 K& [ymax
8 I& a2 O8 Z! m* ], bglobal-reputation-list
# @6 ]8 G, @+ ~6 B' W' C" [  x6 f" l0 f$ s+ d6 @. u$ j% W$ a3 f
;;
每一个turtle的全局声誉都存在此LIST6 T* Y$ }% q7 r9 T1 b- I
credibility-list
2 n; E! q2 W, ];;
每一个turtle的评价可信度8 |" q( g9 r4 `. Q8 f& n) s. n
honest-service
7 E& P! L5 Z0 p9 ^unhonest-service
5 H0 i6 R* Z* A( U7 ^5 [oscillation) j& B" Y9 \4 v' _
rand-dynamic. `7 y! r9 V* x# s  Z+ m
]
9 O. R" c% f/ F$ k" J; w1 M5 F5 B; S! E  {4 m) q: V1 c" r8 d
turtles-own[3 ~+ m; ^5 F* L, J, P, W9 c% M
trade-record-all
6 \( q+ C/ G; h$ l/ Q* Z;;a list of lists,
trade-record-one组成
# i+ a/ }2 S# u/ D8 E1 y( jtrade-record-one
( K- a- u  f$ V% Y& t' l& o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ L8 e3 M" i/ u$ F+ ~$ D1 `

+ y6 I$ O+ x7 V9 j4 S;;[
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]]
/ W- J9 K/ a# Q+ Z; @. R# ]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]8 P/ _* F6 K- ~$ A
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
! s1 ^: x4 [+ O, vneighbor-total
0 Q' N- g$ V0 F, o2 i;;
记录该turtle的邻居节点的数目
2 H* }& U9 \) p( d- D& j. ~" ltrade-time
  S( z7 @' G" B  I& L6 I& ];;
当前发生交易的turtle的交易时间+ U* n6 q. \# v* h
appraise-give
' K; d2 b1 r. U& s$ U5 k;;
当前发生交易时给出的评价
' ]' i3 N8 m5 C+ c# F# q( e  Iappraise-receive6 Z! k  g! M5 E1 \1 Q/ H3 b, }
;;
当前发生交易时收到的评价
4 A8 L1 Q+ e4 O. J: x, [appraise-time
! F7 V: k6 l# D, K) l; X5 F;;
当前发生交易时的评价时间+ P8 J0 J7 J0 V$ v# w) N
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, b7 H- ^0 m, s* F
trade-times-total8 `0 v% N  M, u- x& L& Y8 _- y
;;
与当前turtle的交易总次数
" g* Q4 G, s7 J& J9 `- Ftrade-money-total
$ k& L* o' z) k$ E6 L' |;;
与当前turtle的交易总金额
  {8 p6 ?& |9 P- v" Llocal-reputation5 S% o$ R0 Z: n; M
global-reputation* w- o) d' @/ E5 u* L  W; B
credibility0 P# J9 n) `) L0 R, x
;;
评价可信度,每次交易后都需要更新
) J2 ^# a! |( }$ gcredibility-all
% _  `# k0 |' 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
" |6 [2 S% K: T. y' Y4 P! ^6 F3 c4 U( g! 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( Z  e/ ~6 H7 Y. W" V
credibility-one
6 ?; \7 b- X1 G$ 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
# p5 Z7 f2 }; M' m* sglobal-proportion
$ V# F- O" h4 f+ J+ Lcustomer
1 c& j/ S* ]  K9 M; f! H9 Fcustomer-no( Y; b5 V8 ]! J0 [! X9 u
trust-ok
8 S8 y: S. G* htrade-record-one-len;;trade-record-one的长度( ~; ?6 _: l  f
]
0 c  a6 C9 Q0 o# E3 [% D5 R
0 [4 Q1 Z6 u$ U% t3 z: X/ };;setup procedure* S9 W4 _  B/ r" s9 h

( u6 e  F' \. x7 I$ D+ F4 rto setup9 l1 c3 t, Q; {& i/ Z" G% f

2 q$ m) S( v9 ]$ ]" ~0 s: Qca

5 R# J0 J" i  r3 @: f! ~% {2 l$ q& R! }$ [% i
initialize-settings
9 n; x8 g6 ]- _2 H

' \8 z6 }  e* W( c& acrt people [setup-turtles]
) l# |7 `0 C3 r& s; c) [
: d8 v7 g% i, v/ Q% _7 n, J
reset-timer
6 _# u4 O6 x0 W- ]
& k1 x' x8 x% z8 w, I
poll-class

) V. K( @# q; s+ o. P: U" g! w: L, f0 M3 U
setup-plots

. o" `; D; m7 J$ T& U" ]" f$ B# q# `- S  i6 B, U
do-plots
- u+ A9 ?/ M# W' q  s
end9 a" p: E. _* j) o8 Y6 j6 C* n

  H9 s5 q, Y6 l- R: F  j+ s+ D3 L( z  xto initialize-settings0 Q& w' g& c, Z1 g, D# I: B

2 N/ t+ b" t+ b8 w+ P9 l# uset global-reputation-list []

, h' O: i; V2 `* e
7 \% S3 f9 S" ]set credibility-list n-values people [0.5]
% c) B+ M# w1 e& L
- c/ h0 ^: j- |; F, h
set honest-service 0
% h. w. e# [1 `5 _1 F8 e9 W
3 {  ]  p4 K6 {' u$ f! X# n
set unhonest-service 0

  ]% z& N+ T5 I8 n
9 [3 [: ]$ o9 ]- A; Aset oscillation 0
7 r. ~# s1 P7 Z* I3 Z8 w
$ ^  C; p: z+ }$ w( f3 \) R
set rand-dynamic 0
4 M+ A) r) n  x( z
end. H/ P1 m% O" L7 [4 E
( T3 L) P, I3 N, P- q
to setup-turtles ) |# \3 J0 _7 H8 W+ t8 J. H
set shape "person"
  Q! @0 N# ^' v; Asetxy random-xcor random-ycor6 l- A. J1 F0 v) C. F7 W
set trade-record-one []1 U) [! g# O7 u8 _) q% s/ i" m$ e

' \) t( s5 `: O, D+ e+ ~! {" Yset trade-record-all n-values people [(list (? + 1) 0 0)] 3 Z5 W8 t8 q: d( {- h
) B9 L; a+ L2 j/ Y: x# |" Y
set trade-record-current []
; ~; @7 S5 ~$ [; _/ n0 b% Mset credibility-receive []
: R. z) A6 H. z" |1 t8 t! u1 Rset local-reputation 0.5
0 e' v, C, u* B) B0 d7 E! k0 h0 E4 ]set neighbor-total 0
- A) _5 b2 J9 t$ L4 N$ Y, W+ pset trade-times-total 05 Q; q2 d5 `1 ?9 ~
set trade-money-total 0) E7 K! e- @) I& j0 ^8 r
set customer nobody
. g% G% s: ~6 W( V: Gset credibility-all n-values people [creat-credibility]
$ K, y+ s2 y. q# Hset credibility n-values people [-1]5 q& N4 C- u" o1 d
get-color, D& s- W2 b; u' O) Y

' m5 E' r0 b) N6 I: L" oend
3 t; \+ ]9 O: X5 P; Y: |: ?, M% l: J7 S) q# p* w
to-report creat-credibility! l1 {1 |: ?( @5 u' o
report n-values people [0.5]* P. U3 c' z  N+ x  C- [; _4 E; @; S
end) g7 Y( U* Q. Z

& R$ P6 c% E2 G+ |to setup-plots. d5 I  p! |* ~( C3 d

4 R9 u/ w$ J' S- j' dset xmax 30
5 J* O8 [& A( n, w( {1 [

* S* E5 |) K6 ~  U' {set ymax 1.0
$ \8 p+ D6 a+ ^$ e8 j$ B
3 x5 {1 J5 u/ W' M5 H( _
clear-all-plots
9 d0 Z; Y6 ]2 M" e% _9 }

. ?, J- F  F1 x5 `8 Vsetup-plot1
* N3 j- W* @, ]
& g8 D" ]3 ?' c% o! U; f" L% \6 Q) w4 _
setup-plot2
* i9 L0 W  E" P5 p1 j9 u9 J& b
' o2 n# _- p0 V
setup-plot3

# V6 B7 _. h6 h5 D, x% A! mend
/ g( O' }$ i: f
' }( v% x" X% ];;run time procedures
' l, B% d5 @; a  D
8 D: ]- g6 ~# u1 F8 _* c, J* f# |to go
5 h) L' x7 G4 b* U0 t! l7 I* X. E: [/ |% \" ^) `
ask turtles [do-business]

0 r( S9 `: d( B, Y. w, vend
$ I1 p0 ~2 f) r/ F' q- ^
0 S, f1 N# ?3 n/ a, s0 X$ I2 `5 dto do-business - S& m3 w2 K0 N! o$ W! B

; O& o. o! Z8 K0 i, F& m! B5 l4 l& ?
rt random 360
/ z7 @2 d( n+ x

, u8 g) \: ^3 sfd 1

3 j* L" L( \8 W6 s  _
4 G  O" O3 O' o+ @ifelse(other turtles-here != nobody)[
, y5 z$ A: v. B7 }  |7 j. b

1 M4 `- b3 q- J- q8 _8 Hset customer one-of other turtles-here

! `7 f) {% {& `/ u/ W+ r5 {2 ?
* M1 s/ ]  h' w' u, A- };; set [customer] of customer myself
. o: N  q. ?. T! l

3 w9 ^  r) h4 j4 @7 [set [trade-record-one] of self item (([who] of customer) - 1)
3 e% {( `$ `6 L8 B4 H3 |/ s( O[trade-record-all]of self) L# w4 o$ |$ v/ s5 \9 h. A+ }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 P6 U* U6 H8 O0 r2 ]1 O/ R% ^

4 y* m: o# T7 n2 t+ n; |set [trade-record-one] of customer item (([who] of self) - 1)
% r7 s3 Q/ U+ K0 f2 Z[trade-record-all]of customer

5 l; i3 \0 D# D$ n/ q0 F) [4 }0 \( B# D8 Y
set [trade-record-one-len] of self length [trade-record-one] of self

8 W/ M( o1 O* Z* [
7 R5 D6 g0 j! K6 [3 @. fset trade-record-current( list (timer) (random money-upper-limit))

" v) ^/ G# r4 S: W* a& ^+ k; t+ U' U4 Z% @$ S* Q; Y
ask self [do-trust]
' g, W8 @( A" U, O;;
先求ij的信任度& z9 Z3 F; c0 U; H+ L4 d8 d
2 ^4 c+ T; X5 N. L6 q7 C
if ([trust-ok] of self)
: L9 j2 L- b8 y5 l* U;;
根据ij的信任度来决定是否与j进行交易[
/ x! i  _2 n: |2 Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" j* U# g# G/ Q- |

/ U& B* @# H8 M. `$ `9 [7 S) i[
% r( Z9 E( W9 r, ~3 \
/ P6 Q) h: l3 c- F# P# s; P- e' e
do-trade
8 I5 l. ?: Y/ K* @" F9 ^2 W# e
# i  U- n+ {1 v* {- ^+ I% d
update-credibility-ijl

+ k1 k8 N( ^% m! d9 D$ I7 ~
. c" ]; c0 W. a+ {% Fupdate-credibility-list
8 x( W8 D. Y- V* B' N' ~
9 |9 Q+ e" V5 D" Q" d

, g8 X% p: Z  {- Dupdate-global-reputation-list

4 b3 E1 G7 o- O  W
7 A' e+ O* |" J7 C" n4 z! npoll-class
6 s! u4 r5 l5 G9 s, q6 N3 l3 F

1 r; }6 I& a. j' aget-color

% m! J0 |1 w0 a+ u  y! g* o
$ v, ?- S0 ?1 @! Y6 h. l3 p]]
# u% O1 C4 @* j1 b+ g9 G! L
$ v3 F" S3 x4 P;;
如果所得的信任度满足条件,则进行交易# M, e+ T# @& e# [
9 b0 K8 `! H# f' \+ k
[

- m$ O% f, F) ~) j% ?. e# [- G" j( _2 I) f, m- T* @
rt random 360

! W/ k, y1 e2 A; ~( v3 i+ ]2 |2 M* ^$ B( ^- a! b4 W
fd 1
5 K( ?3 s0 a4 U6 l/ |* Z, f( B

- Y; R0 x4 s6 u% v: c2 A1 []
5 Z! g& P! s& F5 n+ K' G$ t
# `* K  r3 \( {7 F* Q& X; d
end

3 V0 a" q, a; ]+ e4 G& U# y+ @5 \0 _# S/ a& a+ ]6 i
to do-trust 1 T( v4 d/ L+ N# k' O
set trust-ok False' ]$ f3 E6 k! `# ]; c
: u- l% ^9 S. x" g. U. i: q  L% _
# \5 W4 i. }& h* X! V  z
let max-trade-times 0# S2 \8 v( a% d0 B2 k6 R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# l) q: H4 n) F# O0 |# b7 Klet max-trade-money 0
8 n  ~, _, [  \- eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ y) q: g" O! N+ f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 D* O+ r5 x4 H( L2 X. A

6 E) N: O9 B' l9 B

# z0 @" w3 n8 o8 `3 sget-global-proportion( e4 _7 D- C4 C
let trust-value$ U9 n2 W6 s- B" H) l5 S. Q, p
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)

0 t& b4 b; r2 y% f+ y; [3 ^if(trust-value > trade-trust-value)
( E. T9 d% m+ p0 T3 {& f[set trust-ok true]
3 z8 l3 C/ L: z; B& cend
3 q7 [7 m: W. ]  C' C
6 p3 D0 E/ e/ u! b) Q9 i  \to get-global-proportion
* h$ k) s: E$ S$ w! h+ Jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 v8 j: V; f$ Q4 ~6 _[set global-proportion 0]
6 W0 a: d% {9 T[let i 08 @8 Y5 [  Z$ L/ O) a. e: F+ |$ M. \3 i
let sum-money 0' M9 F+ p/ c" E# Q+ M
while[ i < people]. [) \3 Y. s2 \
[
1 Y5 T- x1 P7 B, i' c* ~, @1 K3 hif( length (item i( H# B: [1 Z4 ]
[trade-record-all] of customer) > 3 )

( f4 ]0 X/ b# Z2 {2 _# t[
# k5 m$ E0 }$ `* Z% X3 e, Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 l- U5 V, a* ^]
: X, v# _3 q2 j9 T/ q: O9 T]
* X0 b& F1 C6 D8 H+ Q6 [4 ilet j 0: Y  `$ J  R5 Y0 n' i; K0 h
let note 0; f, W4 S: O2 _$ z& [0 }
while[ j < people]( Y! z, F: G, p9 _3 B
[1 D4 ]6 V0 o& o4 j3 W0 W: h
if( length (item i
5 P# \" n$ i( P6 W- J7 n$ f( W[trade-record-all] of customer) > 3 )

2 B5 R* V! W: L1 Y[6 O' H' e3 P2 T0 R" S0 y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& t2 d9 d& m# S; |; E% }
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) V( ]+ _4 A& {7 b. X) c) V  g5 S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% N1 B! q9 _2 d5 _]
: Q$ [# D* _. j9 J+ K3 }3 @9 ?]
* k1 Z# a9 a  gset global-proportion note
8 Z/ W# z+ i; T6 V  k]
- Z3 o( b# `9 x. [* s" n/ E" Lend4 X6 m: N- T9 v* s' m2 X

+ c' |5 Q; O7 ^to do-trade( ~+ G; J1 ]1 L1 I2 B; z/ \* `
;;
这个过程实际上是给双方作出评价的过程, d/ U7 W# c0 @+ G, E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: ~7 v* w/ ?% [' iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) m# h! w* z4 P- e0 `
set trade-record-current lput(timer) trade-record-current
, ~1 C. F6 ^. W;;
评价时间' a/ A+ c; c, t5 }
ask myself [
2 W; }9 o/ v) v, S& q3 uupdate-local-reputation
. V5 D% L9 c6 S) n* Y  T: dset trade-record-current lput([local-reputation] of myself) trade-record-current
) I7 J& Y8 A4 V. e) e]2 z8 z3 g6 B3 Z' V
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ c/ `0 d& d/ b8 ?4 ^& Y
;;
将此次交易的记录加入到trade-record-one
$ V! U, W5 p9 _) i. X; v: l: jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  @5 p$ |  v. A, }' xlet note (item 2 trade-record-current )
. l1 ?  F, A3 Bset trade-record-current3 P0 H% V+ Y/ b( e. U
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 T# h6 c' Z% k; i, n3 g  g" y; ^
set trade-record-current
# w: W5 x4 O' M3 s) p(replace-item 3 trade-record-current note)
3 {& k8 S" Q9 p! T6 w+ B% g! @
; \  l# D. I8 d. A* Y% G

( Q5 w2 `6 n7 q6 u. s+ M$ Y8 ?ask customer [/ g; Q7 g0 Z& D* f6 V
update-local-reputation
4 B% [' N0 @: H, M- [. b% P3 jset trade-record-current
6 N* s2 U* _* [9 F& P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 {6 P; O7 `/ k, i0 |7 U0 ~; ^& f; A: m
]3 B4 M9 X/ I6 H1 D! d! ?

  \" _8 m. C/ d* i! V: l' P$ L
# y( n. i6 |- n8 i7 R$ ]  ^! _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! Y$ W* \! G7 J+ _: J4 _
' D2 e# x' e0 K1 {: |8 F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- x( E: S6 P3 P& y7 _
;;
将此次交易的记录加入到customertrade-record-all
4 b  v' A- j7 c9 I% g% Send/ @% U* K! u9 C# f, _

" e4 `+ f: c: Q/ u+ F# l0 _$ a0 wto update-local-reputation9 D& q- b7 n5 F& I5 n7 M
set [trade-record-one-len] of myself length [trade-record-one] of myself/ [6 P) H1 d; N6 j

0 ?% g+ Z, y1 O. ?9 F- c- Z3 l' u* h4 m
;;if [trade-record-one-len] of myself > 3

! `; S! C+ k) Y3 l* supdate-neighbor-total
( Z5 g( o  z7 x3 V. w4 Q; w;;
更新邻居节点的数目,在此进行  j7 K1 q0 `* T& f# z4 t: E. G) Y# e
let i 3
8 D, u' o1 T& H5 o( z  _% Olet sum-time 0
: W0 D' J4 z$ s( K+ pwhile[i < [trade-record-one-len] of myself], J' F- r. q, Q3 R! b! H
[
) m+ w$ D, p7 b' }, Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  f' I3 ]. Q. Y$ u# f3 fset i
$ z6 @, W' n8 y9 W2 A0 g( i + 1)

+ Z/ p* ^$ T$ w! _  S$ T7 i]
; Z1 g& T/ q% Llet j 34 Z5 |2 d: _2 t! G  @7 k
let sum-money 06 B5 F8 u4 B+ r* ?+ ?
while[j < [trade-record-one-len] of myself]' a  U+ n0 j( k
[
) m3 ~8 F; 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)
6 ?2 p+ b0 p" D4 e6 v& mset j  w: T" b7 L. {/ M
( j + 1)
  Q5 G  T0 v2 C/ \0 Q
]! Q6 ~4 U7 }. ?  V8 I* Z) _; p/ j
let k 3. E$ [* s3 U: g/ [; |: c6 m
let power 0& p9 H3 L& N) q: Y) q1 h$ s6 w5 l
let local 0: J4 H1 k" S7 W$ ?6 V8 V
while [k <[trade-record-one-len] of myself]2 H4 L% k# I" n3 a: n
[
& ?; h( S# M. k* F4 aset 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) * [; B! |8 |* ~- X; I. t
set k (k + 1)
5 v  Z9 N, ?  z$ }5 m" L]
4 `3 w( _/ d. g# ]set [local-reputation] of myself (local)
2 g% [* U! [* A) p. ~end1 F: P6 c! C9 H1 [
6 I0 s# c) }/ ^9 `6 o6 U( r- r$ I: G) T
to update-neighbor-total1 \! F4 f9 m8 }9 {

! O( c9 N! M6 u6 l! Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- }, c5 _# H& b& }7 I4 p" k* R

/ Q) ?& ?8 ?, D. h3 s$ d

$ J5 M& o# }  Eend: m/ p! j2 S! t
4 o/ x) D6 R$ w" s4 u( B# P% J
to update-credibility-ijl / v; y- Z& s( C. m

4 F( W$ {/ i: `$ g3 S/ g4 N( T;;
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。
7 @, i- d) k0 J& P, P7 X- r2 }let l 0
9 V: Y5 M9 H+ V% @while[ l < people ]2 n% W1 T7 {  x
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价8 f/ r* N- n8 T2 f/ O8 h
[; q$ V5 s- w; C, s
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 R( j) c% S. D. d% M
if (trade-record-one-j-l-len > 3)
/ P1 F! Y$ x3 N: 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-one5 `; b# w& ?' q4 @- [; M" c9 T
let i 3
/ b- `: n; |/ z2 Q& R4 jlet sum-time 0& u4 B' i( X  S) d
while[i < trade-record-one-len]
$ r6 M0 {1 K+ {3 i7 ?& D) ]1 x[/ a4 M3 l4 |4 ]; C' }
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* r3 B& c4 |' m& o* k; H, |( h: e
set i
: ]# V. L* U% r3 F' O* ]( i + 1)

/ \7 N+ p  d( l% {/ x]
) e3 C, R/ K9 s8 S2 D* D  Z& k. v& Dlet credibility-i-j-l 0% @5 S" P; h/ d4 Z/ r; b/ a; S
;;i
评价(jjl的评价)1 u( T7 i! a. t" Y: B
let j 3
8 c( f) |: f! K/ O/ `let k 4
# s$ k9 l7 J  p( c/ j0 Wwhile[j < trade-record-one-len]
: L; v& [/ i8 K  e[- l9 K. `* B9 C3 Y0 N/ p+ [! n( g
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! o% T' _/ ^) I
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)
" ]1 i  H. y0 D5 `) k. e  _set j6 v8 U3 @$ O1 ?) d$ A( ^/ L9 N
( j + 1)

; Z: D' c5 y  [0 C& [. ^  |4 m# X]
! a  F8 t( f: s+ t. k6 ]) lset [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 ))3 v8 |$ \/ [. l. e; V9 U

1 w$ n/ v& z4 a- l4 d& _

9 x' i& ?9 G+ O2 ^" f5 i( ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 a* P0 B$ w/ u. y;;
及时更新il的评价质量的评价. ]: T  T* y1 A/ p, F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, a$ I$ M9 y! o) M. w3 cset l (l + 1): `. I, l! Y6 z% e6 ^* S# M
], U4 W0 o, z0 d4 M
end
3 Z$ @3 d. p& q7 `
' J* Y+ v4 S, A9 Y4 l, tto update-credibility-list
7 X1 g8 {' F: ~! E; N* b: Glet i 07 {2 Y! [( z" }
while[i < people]( C: @; L8 F: }0 f. O
[
3 i* X- t) {# ]9 A! z$ a1 nlet j 0) [8 ]7 }2 }; Y: u+ d: S9 g
let note 0
0 U4 D$ ]' O0 W# Z  q% Q% b* Hlet k 0
5 q: k3 |0 Q, e;;
计作出过评价的邻居节点的数目1 t) S$ B- X! [; Z& A5 K( s5 p  x
while[j < people]4 ?, Z, a9 j3 U2 W* t
[
+ P  v$ r$ v5 T! b. Pif (item j( [credibility] of turtle (i + 1)) != -1): X. ~4 I4 R6 n; H
;;
判断是否给本turtle的评价质量做出过评价的节点
1 T- y3 X% p( V) M" a' k" V[set note (note + item j ([credibility]of turtle (i + 1)))
6 q# k3 F* A3 M/ h; ^;;*(exp (-(people - 2)))/(people - 2))]
$ E/ w* a& _# c3 \* B8 g
set k (k + 1)
1 T/ `% ~, Z& A. `5 c. W]. g/ S& L" A) _9 _* Z
set j (j + 1)" f, k3 N0 D& v0 k2 f
]
9 q) H; f# l$ `. J5 [4 ~4 bset note (note *(exp (- (1 / k)))/ k)
: f  l% E: \/ a) I3 ]$ c% n2 _set credibility-list (replace-item i credibility-list note)
8 V$ d" D1 Q5 `1 O( `set i (i + 1)" A0 r* v& S- i: v* w; h
]0 x2 z' S1 T& y+ w) W+ r8 x" v( @- P
end
# `" T9 [$ A3 D8 y$ w0 l  q2 P" I8 X9 m/ M5 Z. d" Q! F; m: j, r
to update-global-reputation-list; w+ _; q' N  T9 l5 K# n  V: _
let j 0& a: `0 B5 [( S: f+ s' i
while[j < people]
$ H! C5 M6 R8 R- y5 R- o. G* [" ^[
/ v; t, I! N2 D# R6 e% o* |let new 0
3 K  E8 P1 `8 ~0 |, |+ Z, d;;
暂存新的一个全局声誉% Y6 k5 s2 x' l2 U4 s7 }
let i 06 |( {3 A( @. M* \
let sum-money 0
& [. s: K0 |0 ~/ S8 llet credibility-money 0! k& y) R! M! V! N+ d+ ^
while [i < people], J( K+ C" Z; ]% k9 ]
[
+ T! Y2 J  ^0 N5 Y) Pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 q: L* g. e7 b; _
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) O3 U6 S9 S. x
set i (i + 1)5 X/ _( Z9 ^" k- ^: n2 f8 M
]$ K: `, R& u' n. ^9 ?4 [8 K4 k) }
let k 0
0 C' z2 n) g$ Q/ s1 P8 xlet new1 0
3 L: S! ?  n' y% y9 mwhile [k < people]% q1 q1 ^. I% L0 p/ Y
[
5 `" z! X5 U( M( u; hset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money); \+ {- e6 J+ M
set k (k + 1)
, s% l6 Z; `8 Y]
2 @2 E7 t: {3 W$ X9 q4 v2 K/ E' yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # V- o8 S; d5 f
set global-reputation-list (replace-item j global-reputation-list new)
; `/ g8 ~7 i) Q/ l5 j+ J; \& mset j (j + 1)3 T2 N4 i8 W$ r! V& u9 W
]
- r7 U) V! d8 N$ X3 n) m: O1 E$ A0 Nend& a; ?2 s$ M$ E, J( P4 U9 f

$ u* B8 d1 T( S
3 M( ?- e) r/ T# \; W
5 G  \  w9 w7 I% I; U4 m6 d7 sto get-color
) K, |  u# k. z
1 k: a4 l4 l( b; g$ j0 }& s" l1 F. Nset color blue

( A4 c. X# m, g$ j  fend/ ]. _) B# r, L2 E. g! I
* ]3 I: {  @+ B: \, A( d
to poll-class
3 k% x/ P  Y: `: c3 h! ^& Cend! \$ P3 ?- h6 \, \8 Q5 L9 W, v
  y2 B! m8 w1 Z: _+ W5 q& R, k$ q
to setup-plot1- m. V8 g" Q5 z1 d* v$ y

. q6 j6 n: o, u2 d9 m9 Wset-current-plot "Trends-of-Local-reputation"

- T* \6 O6 u0 Y+ h/ g2 B( j. \* F$ |3 g: }. ]
set-plot-x-range 0 xmax

6 X* k9 \1 @: K, W
4 m  }3 y. [( vset-plot-y-range 0.0 ymax

0 T5 z$ j0 h6 ~$ gend
: m3 Z* R& O4 S$ f5 }  f9 x: z" H* \
to setup-plot2) q1 [" x7 e% o# I1 o5 c

2 R" h9 y/ o  j. o0 Gset-current-plot "Trends-of-global-reputation"
& `; ]2 z7 p4 E2 `. C; p

# H' B( f/ v) I) s  Nset-plot-x-range 0 xmax

" Q* ~/ P& N) i8 q9 c, A( S5 o7 W9 t) B! r
set-plot-y-range 0.0 ymax
& r$ v7 A! F5 r+ t
end- C0 G* Q, a: O# v) h  C5 c# D/ F/ }

: U' h9 t2 a, g8 Z* B/ I5 a3 Qto setup-plot3- z$ {( |+ i1 I+ n
: E% e- W% b9 ^! q2 b
set-current-plot "Trends-of-credibility"

5 q& o1 Y  _* n. I1 D3 X- t7 v
" T) |; \) S( ~* C. \8 p/ |set-plot-x-range 0 xmax

- @# t( V! ]& M* ^1 M% W
4 H7 r8 G  m5 F* B# `2 n/ [set-plot-y-range 0.0 ymax
: r; ]& i. [: L3 ]
end
* `/ r) {8 F7 Y6 y4 b) c
" X1 L# @2 }( ~; t3 T& }to do-plots
4 \/ e/ |  M/ g# Z. h  N7 E& Cset-current-plot "Trends-of-Local-reputation"
+ t- {# ]/ c# j/ j' N$ M5 Eset-current-plot-pen "Honest service"
* R# W$ O0 q! L0 K( q  uend
! F1 F6 X! |4 D# y8 |5 T  K, r
[ 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.
/ v  A" f# `8 V7 a- G: u; o
6 i/ h/ z; m- _. n7 `& \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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