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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:6 W+ \; Y1 h  c3 @
to do-business
+ `* ]2 b! I2 f0 v9 N: D1 G8 u rt random 360
3 D8 a. D+ q( e9 M. D  {$ p fd 1
0 I, g5 W' `. w. i& i ifelse(other turtles-here != nobody)[
, I, l/ T  s5 U& s: J   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.& n+ C7 @  p2 g$ T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 a( M& m% ^: t, |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  `0 N) l' u; j
   set [trade-record-one-len] of self length [trade-record-one] of self
2 ~, J. P, v/ u- y  [; ~) p9 r   set trade-record-current( list (timer) (random money-upper-limit))
3 W7 A9 i8 T. z+ ~# }4 ^$ t
) k7 Z8 y3 x9 q: V问题的提示如下:! `% q& ^0 q( Z

0 O" f2 l. N% v( w( `, qerror while turtle 50 running OF in procedure DO-BUSINESS0 l; [: _# u) H$ J
  called by procedure GO3 z0 |/ p, f- V) Z$ N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 q5 ^+ t9 u; l% d
(halted running of go)
1 [7 e9 T# i/ g. z8 i
7 Z# m* V6 ?" |9 A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~~* I1 q* j& V1 M7 x3 R
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
) h( M( N6 v8 |+ s& y! oglobals[
  u# L0 t% C' T. V0 mxmax
5 I( ?# A' R! x8 ]8 L) z1 hymax9 U3 A: s2 J3 l3 @$ a
global-reputation-list9 ~7 W: p3 n, s4 K6 y. Y
8 e  F! k, [  @0 U
;;
每一个turtle的全局声誉都存在此LIST
( `! ?+ }4 v+ x9 ]5 u+ a4 \, v$ acredibility-list2 i* n! P! U' O
;;
每一个turtle的评价可信度" q! |1 g" y9 B0 L
honest-service' l) l2 c+ O/ e# q% Z3 ~
unhonest-service
; Q8 p, j6 K/ R& Soscillation
; D, Y( m. ]) K0 srand-dynamic
4 L' ?- H0 U5 A+ p, l]
, u0 d3 s6 d% y( i
3 u7 [, Q: O# L; {% f; \/ lturtles-own[( o7 s. L. d7 r7 w! ^8 E" Z
trade-record-all6 u) u* H: ~* Q0 ?
;;a list of lists,
trade-record-one组成: [8 ^8 P7 O5 I# T
trade-record-one/ I3 |  Z' k  q/ e7 r' _
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 t0 [' F( v6 }# `$ v) F# L3 g( F
/ E3 F% N4 v7 {6 O;;[
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]]/ `) @, m7 ?" m
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]
# H: `4 `: G  F$ 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. C# C- n+ z* i! T6 a
neighbor-total
! O) Y7 ^9 S. H% Z;;
记录该turtle的邻居节点的数目
8 z6 y2 o" X* r4 s% p( {: ytrade-time
. m! L+ j+ r& b# k- A;;
当前发生交易的turtle的交易时间
9 A! \- O' i1 X2 }2 x" F* m5 l7 iappraise-give
7 r% ^' A7 P: h8 q5 T* s3 X;;
当前发生交易时给出的评价# S4 A  W& h3 {6 Z- F! j3 ?/ I
appraise-receive
1 m1 @: s/ R- ^/ ^;;
当前发生交易时收到的评价
5 e' v: H( o# `( X# M. Z1 C5 m2 w9 nappraise-time
& W; O& L1 |: R1 u;;
当前发生交易时的评价时间
" F+ B- c! l( g- T2 q) jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 D6 y0 Y0 g  ~; s4 F& y! N4 ]trade-times-total8 E1 j* ]# A; l+ d
;;
与当前turtle的交易总次数
. n. I$ p- f" L. d$ z. ptrade-money-total
- X7 {# ^; V% N; ?' \: p$ H  I;;
与当前turtle的交易总金额
& s: V" N# l+ z5 d' W' ^% r/ @local-reputation
- b8 {2 r" `3 i' Gglobal-reputation
& q' \+ P0 K  x9 G1 Pcredibility
! o" D  _' t; H;;
评价可信度,每次交易后都需要更新4 I  h8 A% U/ X8 k; E0 {5 S% t
credibility-all
; j3 f7 R+ m$ p4 `0 q( X! r  j;;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/ c$ ]1 F9 X- f3 o

& {: s. P8 _! M- ^4 e/ 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
2 K6 P8 m: L. Y* k) `$ [credibility-one
$ _( O  e) m9 b& H" O;;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
8 L8 E) V& T& M0 G* Xglobal-proportion
' \; r/ L$ L6 ]2 c) s. Ucustomer
. v+ P+ @- N' e3 k! A; g1 |customer-no1 h8 y8 f' f" \9 s
trust-ok
% `4 P) z% t5 ?9 A2 ], E4 m1 M  l; Xtrade-record-one-len;;trade-record-one的长度
/ s/ v, E# y5 z# q& {]
7 m% ^5 @) H- a2 l6 a9 D2 E) I; G$ E. B) H  u( K# p8 l, Y  |% e
;;setup procedure
1 }0 ?% i4 G. K5 c6 h6 i( J  k8 s2 C) v& ?# V" ~9 z5 @/ F/ m! l
to setup1 Z1 e/ i! `& i3 U# Z" [; i3 D

2 m+ P5 Y* |7 X, l- Z/ y& Dca

, C- g- M- _8 Y& F1 R
! o2 Z1 ?* J2 Zinitialize-settings
; |! j6 Q$ {) c# M9 H" B1 R) P/ R- l
: B; s5 g( a$ C: E& T* n
crt people [setup-turtles]
5 u1 A$ H" c/ i. ]6 I2 }0 y

# i/ q* Q% S* z+ b' w" sreset-timer
3 v1 O3 F0 l2 ~6 K" r; r$ }

( {* q  h6 o( G6 P- ]1 _poll-class

2 S" n+ I8 _! ]1 \
! ?7 `5 I1 A5 q9 Vsetup-plots
- F4 }2 F6 ]9 m3 ]. T& ]$ e

& q0 U8 a1 z# rdo-plots
  M8 r5 a6 D$ A3 X9 g. q4 l
end) H9 Y: U7 O/ N

# O3 ]2 U$ d  [4 C: I( w+ ]( Ato initialize-settings
  I, N& J! [6 K; S4 C; m& A  |' X* b  u4 ~6 }  k6 c: r# O
set global-reputation-list []
! `; C3 X$ N8 h# S& H6 G) L

" z  C0 y3 C3 G2 ^2 P+ f6 Uset credibility-list n-values people [0.5]

0 I: D& T2 T$ J$ k" L. b  @
( g2 ?7 m, y4 _: D+ lset honest-service 0

* S, |# a* l$ |5 u  Y! M. E5 x- l' \, c) c! G, o0 ]1 H' W. o
set unhonest-service 0
/ i2 |  b8 e$ h9 @% Y- Y. O
) I$ g+ v6 W2 Q
set oscillation 0
, Y  g7 ]' _  ?) j, A0 f

, W, m, l3 T: Z! D$ X6 qset rand-dynamic 0

9 @7 B) m& S( A; Send
7 q" S9 \8 J% m) b/ x0 e
" F8 g; e2 t3 c- T# Qto setup-turtles
# S( M; z, X1 y5 ]) _; r' `7 w: Oset shape "person"
5 t) s# n9 D% X( P) N0 E' [$ zsetxy random-xcor random-ycor
" |5 R: U9 i1 N, ]! d9 a7 ~% b5 tset trade-record-one []
4 k' N0 W( ]4 H9 q3 p

. [' z- {+ |6 h0 d4 p' G" \  @; m" d) Sset trade-record-all n-values people [(list (? + 1) 0 0)]
5 e/ r, ]  B2 d; P4 z! v) v
$ _2 K2 F7 M1 l
set trade-record-current []
# w4 v9 K4 ]. l9 M: ^9 j& Dset credibility-receive []
, ]( J* w4 q+ s$ D* j9 e; _9 bset local-reputation 0.52 _4 q8 d" K2 |7 y) r
set neighbor-total 00 g& l1 R" i, e& D! a
set trade-times-total 0/ G! j" U5 @. Q
set trade-money-total 0
( ]+ U+ x4 i! I" v5 a7 Qset customer nobody
, z" _5 c  {& hset credibility-all n-values people [creat-credibility]
# }' s5 E% e( B5 h) Y' J' `. L* I# a8 x  Lset credibility n-values people [-1]0 ?* H3 m) U* F# i; ~2 i' l, l
get-color
- C6 W8 {" m3 ?0 _" N2 O! N
1 }+ v& X6 n% I" T$ J/ w
end3 t9 Z8 A. N6 ]5 j1 S/ B

$ {5 |% \: h& c- Gto-report creat-credibility
5 c6 ^4 d+ N3 \- K' E" z; ]report n-values people [0.5]
6 `! N4 i$ f. q6 |3 |4 jend8 g# c- B7 x( ^' |
3 M( P: h9 w0 \3 }$ K
to setup-plots
3 t' `. l* C3 Y9 g$ R" c2 E9 [0 `' v* F: |% J' Q
set xmax 30

; b. t) i4 F0 Y5 `4 T3 Q, q4 C  O7 p; q4 n
set ymax 1.0

" |3 w+ E4 O9 @8 r
8 R  E2 ?; e- [' g& L) o/ F8 Eclear-all-plots
' ]6 w# }& p' W# z

* E& F! u% c! h( _$ ?setup-plot1
) b# s! Y3 P& `4 q

, `8 J' x- j2 Z; h$ e* usetup-plot2
- S/ I+ T$ E2 l1 V- J% F
) t9 N  b$ g7 N& _
setup-plot3
, V; [+ X+ p3 q- ?! `, s# F
end
0 L. n. N( g4 K: b. ^
0 |, r( s! b, i5 }4 c! E# D) R;;run time procedures
" I" E9 \  ~. s- |- O; h
. R# g, b/ Y0 zto go7 Z1 \9 X4 I) v: [, ]" c& s6 b

( `1 m; M$ ^. B8 \' x3 `& V5 aask turtles [do-business]
9 e6 X& i/ ~8 L/ u$ W1 V2 [$ Y
end
' ^( B1 t+ ]0 Y/ t# T
3 ?9 o+ T. j6 t4 ?# Jto do-business 4 t7 ~* j  o) j4 {, Z( o3 ^

2 I/ v1 }/ l8 k- z8 c+ f" l8 S6 C, v4 w" G; ^9 K: K3 r, g+ K! n
rt random 360
: D" s& @5 ~" e4 W

- }. V6 @. I3 n/ L8 sfd 1
, M6 m  A, a6 [; D

2 I4 T1 h9 P5 ?5 g! Difelse(other turtles-here != nobody)[
9 m0 q; }) [8 f- Z6 l' K/ t
. V. G/ o; \0 w
set customer one-of other turtles-here
! b5 J3 c1 W3 p4 y
( ?+ C& }" k1 w) D
;; set [customer] of customer myself

5 {* y+ x6 v2 ]- e! r( [9 T
' U' Q5 ]5 Q* _4 _8 F6 C* N1 xset [trade-record-one] of self item (([who] of customer) - 1)
% L; p' \' I8 I) w( I5 Z[trade-record-all]of self3 O. J  m& _( K( [1 O2 e5 `, U) h% N  P
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  ?0 w. X3 x1 W3 |

& e) y" n7 Z% U8 r( J4 ]0 T9 I2 Pset [trade-record-one] of customer item (([who] of self) - 1)' C! v; A8 O/ p) ~. `
[trade-record-all]of customer
  v/ t$ i  v/ d# X  X8 M

- O  W$ E) B0 ]0 j2 `set [trade-record-one-len] of self length [trade-record-one] of self
5 n' R$ S1 T2 t7 d: ]
; c; P. C8 {  R  `# v* F7 a1 I
set trade-record-current( list (timer) (random money-upper-limit))

& v- i0 m3 I% W  H( j
7 _  z( L% V7 ^( n3 X, `' X( ?% {ask self [do-trust]
- y5 N* z( [. E4 L# \;;
先求ij的信任度
. {: Q. p$ B2 e5 L4 j  y! A
0 i, G: w$ l& p; A% p$ y/ Eif ([trust-ok] of self)
# ~2 W& }  W8 N9 g* A( T: V# M;;
根据ij的信任度来决定是否与j进行交易[
3 L  ?6 }. X+ I3 r7 w& D( Q2 [ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* ^; Z6 W8 }8 t* {2 K. R7 ?: t
4 g2 y/ l% V# _+ @$ r/ W
[

; B. ~3 U: O! q4 ~# ^/ _' B
$ h5 V6 [7 G" @6 W, U2 I0 edo-trade

3 g  u$ _9 U6 I; A, E' ?' D2 S
' @/ ]1 |# B9 l5 dupdate-credibility-ijl
2 o$ A. S  F8 L# c2 H, B

. {+ _7 a9 L( u( C' u' @9 H& ]3 s3 \update-credibility-list( O' b, q2 G6 w* g- z% H9 n
( `  Y3 ]) X6 g

( S) C& W$ f  W8 M$ wupdate-global-reputation-list

. U7 C* x$ Y7 m" }( w; `
2 d9 w. N% c. `/ {poll-class
3 \0 x' T" [5 [5 `) E% j% P9 B( I
' m- ]" [4 m, L* K" I
get-color

" @1 B% A. V! m
+ N3 K& g( e& q]]" x' b- E5 A. X9 E

, r1 x. r: ^! x* t5 y2 v2 |' j; ^4 n;;
如果所得的信任度满足条件,则进行交易
9 ?& p% a2 u) c. K" d( i; D
9 Z# w9 o8 s) J8 h1 k. B1 ~[

+ w$ D0 f( U# a* U# e
# @7 p0 N, U' \2 S& j: Crt random 360

2 p: g* M5 x8 U" |  C7 _, U
0 |2 g$ ]+ c3 @; E" wfd 1

5 y8 Q5 b3 v# z
8 ]* w/ R. L. _+ H5 J% Q]
2 j  m9 P$ ~. o

8 w3 d) r  I1 q9 n+ g( J5 Fend

. o. ], B2 h5 l) X" ~6 s- P
, G( n& I* d5 f9 C) Q5 y9 b0 ]3 `to do-trust % x( E' j+ u0 a' k1 z5 j; F& I
set trust-ok False
5 C% I" ]; d0 u' e: F
! Y+ R) |# M0 v
$ ~+ A& O% Y" F1 H% _
let max-trade-times 0
: E$ A" h& \+ R# G- t8 tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 E' l4 Y. ~0 S, k3 R$ J
let max-trade-money 0  l7 n6 Q6 a$ S2 b) x
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 W# e, F' o8 x  |
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 L5 Q. S( P/ Y$ O2 n0 \) j
) Y7 k( F  N7 r; `  o8 R

. S$ q/ i' J* L' Lget-global-proportion" ~8 ?, U! b" c; j$ l  A+ m/ B- p' t
let trust-value/ \" P8 v1 j# \0 c
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)
( J0 j5 p0 l% ^& V- {# J+ P  U
if(trust-value > trade-trust-value), C0 q1 q( g4 V6 k& I: V
[set trust-ok true]
& V' M( y; n/ P7 b+ O' r, ?. F$ send: L, g7 P# N9 L8 i

0 B' ^; w' I/ _# A3 T& _) d# Bto get-global-proportion
7 }0 f7 D  g3 `9 n3 i# qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# z3 S7 q4 l+ p9 M[set global-proportion 0]  A0 z! Q9 i  \7 |, W0 v0 ^0 Q
[let i 0
1 Q; d+ C' y! P  u) [let sum-money 0
0 X' `. i. }' Cwhile[ i < people]
  J4 q, d) D) w9 J! |9 [8 j[
. n) x  c# ~3 m) B- Y0 D) S: }2 Eif( length (item i, v' A$ [" ?  d3 G
[trade-record-all] of customer) > 3 )
* F; a. D. d. p8 B: I: d! h  t% h7 S
[
2 r( P" p0 x5 l, u) Eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ l0 b  J8 P8 `6 x
]" Q" ?/ N+ O! H9 a! p
]
# ]( W, o% l* N8 @: O% h. e' qlet j 0
2 e9 t* k3 A# c# rlet note 0
5 q6 v" p/ ^  }& d/ z1 M% Wwhile[ j < people]
9 y9 f+ a  e" q4 ]. ~! _5 T# u[) ^7 {: i) {" M* }
if( length (item i% L% y  O3 j% G/ C. U6 j
[trade-record-all] of customer) > 3 )

' {/ D# j& e* ?$ G6 P, m) T3 b7 K[
/ h! Z3 o! ~6 Z& j4 \0 ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ `; j* S) H$ k  q! I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 N; R7 Q: u* R+ g9 E7 Z- c1 a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% J* m* `7 D$ Z7 z" V/ Q7 L]5 x( W2 T0 O$ w2 }
]
* M0 k7 z. q8 l+ [2 Kset global-proportion note
; E8 ~- S4 e- A; r. F+ m: t]
5 w0 [+ m0 C$ I3 Pend: y, {( J, E$ V/ M: _4 u8 s  c

+ P( E7 @1 k6 ~' [1 I. wto do-trade
: @* m- a2 D! t( I4 {;;
这个过程实际上是给双方作出评价的过程
* R9 c- V7 c1 p/ a( v6 Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* `+ p# ~5 O8 o* C! Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; P. W. e& K+ p3 `set trade-record-current lput(timer) trade-record-current! r! W9 l8 i) N! S( P
;;
评价时间
" [& \0 Y5 q: B/ @9 c, Y$ Yask myself [- P2 V5 E- r& K! X' _; {* }4 ]$ f' W: h
update-local-reputation
) J0 M- T7 w/ P  _& D. @1 lset trade-record-current lput([local-reputation] of myself) trade-record-current
8 |. P7 f/ u3 U2 ~* ~. |]9 m/ v# H4 K0 F9 {, w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ P. M. [9 t7 N: I  |1 |9 Z6 j5 ~3 U
;;
将此次交易的记录加入到trade-record-one! ]9 L% h& s' u% P" i7 F9 w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ u. a( o* q* a  u7 ylet note (item 2 trade-record-current )2 N9 c- M3 J8 y0 X$ T7 X( K. v7 K) o
set trade-record-current
( |5 o6 H0 t, Z* Q(replace-item 2 trade-record-current (item 3 trade-record-current))
) t2 P, b" o1 K- v
set trade-record-current
7 j& {  i8 W/ P, C1 \(replace-item 3 trade-record-current note); Z0 H, E4 M/ H

: W5 Z' N. |  [7 x3 E
+ y7 A* v, R  r& I7 Y9 C# p
ask customer [$ M$ n( `( Z; R6 P5 I( X
update-local-reputation
# l$ I$ o; k5 ]7 M  Kset trade-record-current
6 p0 e9 {: [  ^) m. T(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! |" S% s! s5 q& ^]9 y1 C' G4 R' [( g5 U

, A: T; q% }, d# k% R* G

, E) K% }) O+ [) v  |: ~' ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. }* H! Y+ V2 }. v$ g, q) [+ k
4 {8 M- P2 i# }3 c2 [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 L9 K( s6 i% N9 u( A;;
将此次交易的记录加入到customertrade-record-all" j; w" T- f0 N' ^% }
end
) O- y1 s8 X" `7 H1 Y* p: w. O, R1 x, L( h) \# F/ A
to update-local-reputation; N) e' e% v, N
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 W9 P8 D; n8 X% m+ d6 {, z( z( k* q% f% z" ~/ ~

* [' y9 f( x# V8 g( q% F;;if [trade-record-one-len] of myself > 3
  d) `  G7 @+ ^) p
update-neighbor-total
; l% B% y# f9 Y; C;;
更新邻居节点的数目,在此进行
6 B' W: S' f! xlet i 3
* {, a# r* F% J  w2 Blet sum-time 0. E# Z; u9 u1 v9 d7 z" W  L" {
while[i < [trade-record-one-len] of myself]
% O7 P: I4 y$ E7 n+ G0 K- g[
& v# V9 t' S( H( R! zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 u7 M  g7 g( c. v2 D  d
set i# q$ P1 l4 W' c- {" ~4 Y2 q& k
( i + 1)

3 U) Y, S8 Q+ Z; T+ D]) x- S  q* |) K. b
let j 3
+ U: R" g& P1 k" p0 |( G) _let sum-money 0
2 \1 D, O1 V1 O  V( n' Q* `& twhile[j < [trade-record-one-len] of myself]
8 q* b/ }0 u  W) G1 G[
$ |  ]0 ?0 a- o- x, Y7 @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 v; Y8 z3 _' v& O# L2 Mset j' i$ }" w! J& Q+ }% S& b3 I# D
( j + 1)

2 n* {2 K$ N* V& f+ [/ u]5 T$ t. t5 p0 @7 Y0 Z* G0 u3 J4 [1 i
let k 3+ L/ d( U) P8 t# y. L9 `& m1 X, K
let power 0& j7 |8 ]/ O$ J. M" [7 o
let local 0+ i( {5 q% @8 ~5 z0 P3 {
while [k <[trade-record-one-len] of myself]4 ]# ^- A# c9 n6 v# g5 Y* L
[* c( R& C) l$ x" J  A  R2 ~5 O
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)
# b( M, u9 X2 m( L& C' }- Uset k (k + 1)
& v1 e8 Q/ e  Q" O6 N6 \]- F$ |- O  }/ q
set [local-reputation] of myself (local)( q' Y) c+ K6 l' E
end
% {  Z: H" @' a! s& ~# I* a- X) s6 i: Y; p2 ^
to update-neighbor-total8 \5 q  i! }* U4 A! N: i
/ u6 Y' ^8 F! D6 U+ A. A/ n
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 X: x+ g. A8 W; J

, J& q2 W# p7 B, `! w0 i1 ?5 Y

- ~8 ]8 O% t9 x5 B+ ?+ ^end
5 [7 o6 \1 Y% y$ s1 i- U* o8 \& |2 w* I( k) O1 c# f: T
to update-credibility-ijl
% p. c' g7 _1 X1 ]8 l( B" t7 F5 d+ _
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。5 ?( T. j3 ?" x. ?: Y9 Z
let l 0
/ v1 E7 [9 x$ pwhile[ l < people ]! Y/ m# g7 O4 c1 y! n4 f! `
;;
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 s, v) y( \' d' y6 o# g" X[
0 T! ?2 b) ]1 w, m* H3 i% elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ u" ?% Z- E. }8 f7 d3 H& W; J  Cif (trade-record-one-j-l-len > 3)' m- j# }1 K4 S- R
[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( N: {, a9 Z6 y1 w- Z, x  ^
let i 3
& B" e& R% ~4 S+ w! M) n$ h+ F+ tlet sum-time 0" l* |7 N( m  B, M3 P
while[i < trade-record-one-len]( B/ q3 P% n) W' g
[; e9 O* f* |# s% P
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# \' ^. M" E; ?( G# A* G) |
set i
+ g- p2 s% n: M0 a( i + 1)
0 Y% f0 K6 n1 v' O
]7 A& a" i% G* Z9 J' k
let credibility-i-j-l 0
, w( e% R( l  E$ C+ w;;i
评价(jjl的评价)
/ y/ Q0 u- u$ ~; S7 ^0 s# Ilet j 37 r- i  s" l, e) H+ T
let k 4& m* A( ]" K4 p$ Q
while[j < trade-record-one-len]
) ^# F0 j& \) z$ m[9 j& P% g, o4 X. w- i3 X& @* d
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
6 N" X- v3 y; i, c, a3 `- ?set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
7 S: O! y/ y0 E! Y. ~4 Bset j
* R$ `+ D* m$ H) s* \6 x: w( Y( j + 1)

5 j7 W' r6 T1 ^]' M# t: @7 \& l# a& o
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 ))
8 \9 M, r/ v9 r. _/ o& t
0 l& a* g2 `& s: q

4 E6 l2 \6 K6 H% |- jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ @. N# x: c- ]. `) [
;;
及时更新il的评价质量的评价# i+ f/ z+ @- V7 F3 V
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ y( {( Y1 d9 ~: qset l (l + 1)
  D  A3 @. V, `1 H]0 W* `) F) O) v$ t6 H- p
end
4 ^' g  x2 o2 Q/ i, s9 \' M
0 V) F' D' T# v( A$ P* ?; Wto update-credibility-list9 Y% s1 _# Y0 r% o
let i 0! p) L* I- W& M4 i( Z; h& S
while[i < people]
8 T! j! S1 q2 p7 Q% V! j[" A" M6 ^* n' l3 o6 `0 a
let j 0/ ?5 g' @- R9 y5 `6 F  Z7 v( Y
let note 0# M# \- c) l" L3 g1 @) u7 x" J. @
let k 0
/ ?# k0 x' B( y* l( K9 q+ d% n/ Z/ W) v;;
计作出过评价的邻居节点的数目
& Y' {4 p1 T# x7 [& Ywhile[j < people]
5 X9 v( N) a- G7 ]$ i& j, K5 ?% M[
: F# y) f9 ?) f3 aif (item j( [credibility] of turtle (i + 1)) != -1)% C/ L% U2 A/ w8 L$ Q
;;
判断是否给本turtle的评价质量做出过评价的节点
& f9 H# [, s7 F[set note (note + item j ([credibility]of turtle (i + 1)))) w  c9 c6 Q6 m3 G: }( x3 _
;;*(exp (-(people - 2)))/(people - 2))]
6 W/ C( B, V4 ?/ z
set k (k + 1)- d$ y7 n7 Z- D1 S$ X5 b
]" K" q2 ?0 _" g. R  t& A5 X
set j (j + 1)* M# X6 I$ M& H3 F5 g  H
]
0 Y3 J" U0 J/ x2 cset note (note *(exp (- (1 / k)))/ k)& d- X4 t  `" [4 r# T3 E3 z
set credibility-list (replace-item i credibility-list note)" E" a$ g' L4 U
set i (i + 1)0 M/ {; }4 g! X1 v8 P
]
$ B' B2 |# C" \# L; `* Cend8 e5 q% c4 P$ Q' u0 T) g' u
7 y. s  t4 _+ p0 }
to update-global-reputation-list$ ^. K7 l! Q4 g$ W
let j 00 ?& s: \. v- t
while[j < people]
; z$ S: J( \3 A- y+ M[* T2 @: n, [3 S& M. ]- j# e; {
let new 0
# S/ N; g/ o  ]* h8 V;;
暂存新的一个全局声誉
. N# o7 b+ U8 f: {0 c+ blet i 0; \' x4 {8 k' M- x6 d3 O
let sum-money 01 Y6 ^' D' M% C; J8 {& [' [+ ]
let credibility-money 0
/ _7 _% r5 c0 M8 ]& A* Lwhile [i < people]- J$ C; ~) C; [& C% [  g; }
[
0 \* F0 X! R5 w' E+ _' O7 eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 T  X4 W+ i6 |9 Y- M" ?' Tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ ~" c8 S# h# t+ J0 C. Fset i (i + 1)
3 h; ^8 J6 h% t]% P, ^$ r3 b# b
let k 0! a9 S& y( g  U' _& ?8 g5 r8 \
let new1 0, Q3 h: k8 t, ^) p4 q. h5 ?
while [k < people]
: u4 C& d' L3 c- h3 T[# X! O% U2 B' V
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)
% }. k; e7 r' i, uset k (k + 1)
% |" B9 m9 h! z$ D7 o2 K" ?7 X]
' x& N/ [) l5 cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( g9 \. f" G' Y. p' D  g
set global-reputation-list (replace-item j global-reputation-list new)
- G& Q+ q4 c9 b9 Y/ gset j (j + 1)
5 H+ \3 L. [. L+ j7 M) c$ K]
* n  m& Z! ?7 R; ^9 L) r/ Eend
  t- _) |, v: j# _1 Y9 B" j! h7 w' B2 a
' v  _; \/ _, X& Z

& S! ^) @+ i& x3 ]3 vto get-color9 ~* Q, \; q, F9 K5 ]% W& C

& K7 m. W1 W! ]2 y$ Hset color blue

9 U8 N& S9 [7 x8 Dend$ ]5 m/ d% d2 {/ F+ k0 R1 |

" d0 W; I: U. a0 @! t, V9 ~$ M+ rto poll-class
6 d+ f2 U2 D% r, s3 i. [end2 C5 h8 ^' j9 F
& ?3 c- v1 e" p& [8 j0 G
to setup-plot1
- d0 B5 [$ e. E9 u) l  M$ x8 O2 L! B3 i  R. S$ ?9 }9 W: i1 ^- ~9 ]
set-current-plot "Trends-of-Local-reputation"

) @$ q- s+ [$ O4 D3 Z& @; H' R) M. ]& p) j
set-plot-x-range 0 xmax

: L9 {9 y, s8 }* l
; {! i) p3 ~, Eset-plot-y-range 0.0 ymax
' V1 s$ y  @# N
end
( \( |) D' T6 _+ l5 W8 o% v8 l8 W8 i1 S
to setup-plot25 Y" i+ O* I# {5 G

, @6 u& k7 \; o9 n5 T6 O: i- Fset-current-plot "Trends-of-global-reputation"

4 g9 ?' Z1 \5 `) U& ?( w4 q( ^0 K
set-plot-x-range 0 xmax

7 n6 p, C" u' _( s9 G+ c6 _' ?, }  C& y3 M1 _
set-plot-y-range 0.0 ymax
3 R4 M8 e2 Y' u" ^3 u
end
9 S4 f5 i5 x% _  m, c) _" X/ e1 }3 z) @( J7 Q, d
to setup-plot3$ K6 j. q' p+ D' l# z: z

4 F8 D9 R( a8 P4 @set-current-plot "Trends-of-credibility"

: H4 I0 x  |8 ]9 y* H$ n% J3 |+ o) R0 @) R" W& b6 K3 i
set-plot-x-range 0 xmax

# m) q5 t& o/ O/ o8 v# E5 P( J
set-plot-y-range 0.0 ymax
6 f& }# d( a6 j. Y, m, v
end: X! c2 ?0 }0 }4 Q" c8 u6 I  q

4 ?! k1 Y/ F1 M; c0 A* \to do-plots
) z. M# |9 d8 B. a7 W* L7 U1 _set-current-plot "Trends-of-Local-reputation"
( N. k- A8 \: P& p3 vset-current-plot-pen "Honest service"' v. E4 ?/ l3 b1 i0 }- b  j
end
8 W, J+ t- \+ e" m4 `+ Q! H/ `
1 L! l9 V' E  R4 Q, e- \[ 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., t1 n3 {& b: v

' y. G0 U0 T2 ]9 L' i0 a3 ~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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